ADINA Publications

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The Theory used in ADINA is richly documented in the following books by K.J. Bathe and co-authors


Finite Element Procedures
 

Finite Element Procedures in Engineering Analysis

Numerical Methods in Finite Element Analysis
 


The Mechanics of Solids and Structures — Hierarchical ...


The Finite Element Analysis of Shells — Fundamentals


Inelastic Analysis of Solids and Structures

 
 
To Enrich Life
(Sample pages here)
 

 

Following are more than 700 publications — that we know of — with reference to the use of ADINA. The pages give the Abstracts of some papers published since 1986 referring to ADINA. The most recent papers are listed first. All these papers may be searched using the box:

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Finite element formulation for nonlinear incompressible elastic and inelastic analysis

Sussman, Theodore (MIT, Cambridge, MA, USA); Bathe, Klaus-Juergen Source: Computers and Structures, v 26, n 1-2, 1987, p 357-409

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: We introduce a displacement-pressure (u/p) finite element formulation for the geometrically and materially nonlinear analysis of compressible and almost incompressible solids. The u/p formulation features the a priori replacement of the pressure computed from the displacement field by a separately interpolated pressure; this replacement is performed without reference to any specific material description. Considerations for incremental nonlinear analysis (including contact boundary conditions) are discussed and various u/p elements are studied. Numerical examples show the performance of the u/p formulation for two- and three-dimensional problems involving isotropic, orthotropic, rubber-like and elasto-plastic materials. (60 refs.)

Keywords:  SOLIDS -- Pressure Effects  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  ELASTICITY - Analysis  -  PLASTICITY - Analysis

Secondary  Keywords:  INELASTIC ANALYSIS  -  NONLINEAR ANALYSIS  -  COMPRESSIBLE SOLIDS  -  INCOMPRESSIBLE SOLIDS

 


Thermo-mechanical analysis of dry sliding systems

Kennedy, F. E. (Dartmouth Coll, Hanover, NH, USA); Hussaini, S. Z. Source: Computers and Structures, v 26, n 1-2, 1987, p 345-355

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: This paper discusses the numerical analysis of temperatures and stresses near the regions of contact between flat sliding rings, such as the seal rings of mechanical face seals. Of particular interest were rings having a hard, wear-resistant coating on a ductile metallic substrate. The temperature distribution in the sliding contact region was determined using a specially-developed finite element program, and that temperature distribution was used, along with mechanical normal and tangential contact tractions, as input to an ADINA-based thermo-elasto-plastic analysis of stresses and deformations. It was shown that frictional heating is the dominant contributor to high localized temperatures and stresses around the contact region, that plastic deformation can occur in the region, and that thermally-induced deformations and stresses can be a major reason for coating failure. The influence of coating and substrate properties, as well as coating thickness, on the results and on potential failure mechanisms was studied. (15 refs.)

Keywords:  SOLIDS -- Friction  -  MECHANICS - Analysis  -  THERMAL EFFECTS - Analysis  -  WEAR OF MATERIALS  -  COMPUTER AIDED ANALYSIS  -  ELASTOPLASTICITY - Analysis

Secondary Keywords:  THERMO-MECHANICAL ANALYSIS  -  DRY SLIDING SYSTEMS  -  ADINA CODE  -  FAILURE MECHANISMS

 


On training programs for design engineers in the use of finite element analysis

Sadd, Martin H. (Univ of Rhode Island, Kingston, RI, USA); Rolph, W. Donald III Source: Computers and Structures, v 26, n 1-2, 1987, p 411-414

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: The increasing competitiveness in the industrial environment has been the motivation for deployment of a variety of Mechanical Computer Aided Engineering tools, including finite element procedures. To properly exploit these procedures during the design process requires the close coupling of the MCAE tools to the design engineer, with a reasonable strategy placing the analysis responsibility on the design engineering staff. The design engineering function has, however, been primarily project directed, and the experience gained during design engineering does not lend itself well to effectively performing the analysis function. This paper addresses possible approaches that can be used to train design engineers in the use of finite element technology. (12 refs.)

Keywords:  MATHEMATICAL TECHNIQUES -- Finite Element Method  -  ENGINEERING EDUCATION - Computer Applications  -  PERSONNEL TRAINING - Computer Applications  -  COMPUTER AIDED ENGINEERING

Secondary Keywords:  TRAINING PROGRAMS  -  DESIGN ENGINEERS  -  FINITE ELEMENT ANALYSIS

 


Nonlinear structural response of ship panels subjected to air blast loading

Houlston, R. (Defence Research Establishment Suffield, Ralston, Alberta, Can); DesRochers, C. G. Source: Computers and Structures, v 26, n 1-2, 1987, p 1-15

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: Square plates and stiffened panels are fundamental parts of modern warships which, in combat, could be subjected to air blast and underwater shock loads capable of causing considerable structural damage. This paper presents finite element analysis and correlation with experiment of the displacement time histories of a square steel plate exposed to normal spatially constant air blast shock waves. In addition, ADINA finite element and experimental displacement time history results are presented for a stiffened panel subjected to a shock wave from a surface explosion at the Defence Nuclear Agency's event code named MINOR SCALE. (5 refs.)

Keywords:  SHIPS -- Structural Analysis  -  SHOCK WAVES  -  STRUCTURAL PANELS  -  DYNAMICS - Analysis  -  BLASTING  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary Keywords:  NONLINEAR STRUCTURAL RESPONSE  -  SHIP PANELS  -  AIR BLAST LOADING

 


Solution of incompressible viscous fluid flow with heat transfer using ADINA-F

Bathe, Klaus-Juergen (MIT, Cambridge, MA, USA); Dong, Jian Source: Computers and Structures, v 26, n 1-2, 1987, p 17-31

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: The finite element program ADINA-F for analysis of 2-D and 3-D incompressible fluid flow with heat transfer in laminar flow conditions is described. The governing continuum mechanics equations are summarized, the finite element formulation is given and some details on the implementations with the resulting analysis capabilities are presented. Finally, sample solution results that demonstrate some of the program capabilities are given. (11 refs.)

Keywords:  FLOW OF FLUIDS -- Viscous  -  COMPUTER AIDED ANALYSIS  -  HEAT TRANSFER  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  MECHANICS - Continuous Media

Secondary  Keywords:  INCOMPRESSIBLE VISCOUS FLUID FLOW  -  ADINA-F

 


Rubber elasticity models for finite element analysis

Tabaddor, Farhad (Uniroyal Goodrich, Akron, OH, USA) Source: Computers and Structures, v 26, n 1-2, 1987, p 33-40

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: The existence of multiple solutions in the problems of rubber elasticity of M. Mooney-R. S. Rivlin type is discussed for pure homogeneous deformations. The problems of a cube under symmetrical loading and a sheet under symmetrical biaxial loads, in the states of plane stress and plane strain, are analyzed and the stability of the solutions is analytically investigated. A finite element solution to the plane stress problem of a sheet is also presented and it is shown that, under symmetric load, the nonsymmetric mode of deformations can be obtained by perturbation of the symmetric loading. The plane strain problem of a sheet of nearly incompressible material is also analyzed. (5 refs.)

Keywords:  RUBBER -- Elasticity  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  MATHEMATICAL MODELS  -  STRESSES - Strain

Secondary  Keywords:  RUBBER ELASTICITY MODELS  -  SYMMETRICAL LOADING  -  CUBES  -  SHEETS

 


Use of ADINA to predict system response to shock loadings: the HM motor protector. A case study

Mandeville, Raymond E. (Texas Instruments, Attleboro, MA, USA) Source: Computers and Structures, v 26, n 1-2, 1987, p 87-97

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: The paper describes the use of the ADINA finite element program applied in conjunction with the PATRAN-II software system in the formulation and solution of linear and nonlinear dynamic response. Emphasis is placed on the solution of a practical engineering problem. With ADINA and PATRAN II, detailed descriptions of the effects of shock loadings on major components of manufactured motor protectors were achieved. (5 refs.)

Keywords:  ELECTRIC MOTORS -- Protection  -  DYNAMICS - Analysis  -  SYSTEMS ANALYSIS  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  COMPUTER SOFTWARE

Secondary Keywords:  ADINA  -  SYSTEM RESPONSE  -  SHOCK LOADINGS  -  HM MOTOR PROTECTOR  -  CASE STUDY

 


Mathematical modeling of the transient response of electric transmission lines due to conductor breakage

McClure, Ghyslaine (Ecole Polytechnique de Montreal, Montreal, Que, Can); Tinawi, Rene Source: Computers and Structures, v 26, n 1-2, 1987, p 41-56

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA

Abstract: Nonlinear dynamic analyses are performed using ADINA with four idealizations of a small-scale model of a transmission line section subjected to a conductor breakage condition. Results indicate that higher frequency components of the response must be filtered out in order to achieve numerical stability. Accuracy is obtained provided the effect of the propagating stress wave is integrated frequently enough, both in time and space. Comparisons of the transient response with experimental results reported by J. D. Mozer et al. confirm the validity of the proposed mathematical models. (35 refs.)

Keywords:  ELECTRIC LINES -- Structural Analysis  -  ELECTRIC CONDUCTORS - Fracture  -  STRUCTURAL ANALYSIS - Dynamic Response  -  MATHEMATICAL MODELS  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary Keywords:  TRANSIENT RESPONSE  -  ELECTRIC TRANSMISSION LINES  -  CONDUCTOR BREAKAGE  -  ADINA

 


Dynamic response of DOLOS armor units

Tedesco, Joseph W. (Auburn Univ, Auburn, AL, USA); McDougal, William G.; Melby, Jeffrey A.; McGill, Preston B. Source: Computers and Structures, v 26, n 1-2, 1987, p 67-77

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: Concrete armor units are commonly employed for the protection of shorelines and rubble structures. Their design is primarily based on hydrodynamic stability, but their structural response to wave loading is poorly understood. In this study a wave force model is presented, which includes drag, inertia, kinetic and buoyant force components, to estimate hydrodynamic loads on the concrete armor unit, dolos. These loads are employed in a three-dimensional FEM analysis to determine the dynamic states of stress in a 42-ton dolos. (19 refs.)

Keywords:  SHORE PROTECTION -- Concrete Construction  -  STRUCTURAL ANALYSIS - Dynamic Response  -  HYDRODYNAMICS - Fluid Structure Interaction  -  WATER WAVES  -  STRESSES - Analysis  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary  Keywords:  DOLOS ARMOR UNITS  -  WAVE LOADING

 


'Effective-stress-function' algorithm for thermo-elasto-plasticity and creep

Kojic, Milos (ADINA R&D Inc, Watertown, MA, USA); Bathe, Klaus-Juergen Source: International Journal for Numerical Methods in Engineering, v 24, n 8, Aug, 1987, p 1509-1532

ISSN: 0029-5981 CODEN: IJNMBH

Abstract: An algorithm for stable and accurate computations of stresses in finite element thermo-elastic-plastic and creep analysis of metals is presented. The effective-stress-function algorithm solves the governing equations of the inelastic constitutive behaviour by calculating the zero of the appropriate effective-stress-function: a functional relationship which involves as unknown only the effective stress. The derivation of the effective-stress-function for thermo-elasto-plasticity conditions, including creep, for 2-D and 3-D analysis is presented, and the algorithmic steps of the stress solution are discussed. For use in the stiffness matrix a tangent material stress-strain relationship is evaluated consistent with the effective-stress-function algorithm. The solution of some demonstrative problems shows the effectiveness of the solution procedure. (19 refs.)

Keywords:  MATHEMATICAL TECHNIQUES -- Algorithms  -  ELASTOPLASTICITY  -  STRESSES  -  METALS AND ALLOYS - Creep

Secondary Keywords:  EFFECTIVE-STRESS-FUNCTION  -  THERMO-ELASTO-PLASTICITY  -  STIFFNESS MATRIX  -  STRESS-STRAIN RELATIONSHIP

 


Improved automatic incremental algorithm for the efficient solution of nonlinear finite element equations

Bellini, P. X. (Cleveland State Univ, Cleveland, OH, USA); Chulya, A. Source: Computers and Structures, v 26, n 1-2, 1987, p 99-110

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: A review and comparison of the existing arc-length algorithms for the automatic incremental solution of nonlinear finite element equations in static analysis are presented. These include the general spherical arc-length method, the M. A. Crisfield cylindrical arc-length method, and the P. G. Bergan current stiffness parameter ellipsoidal arc-length method. A set of benchmark problems are tested for comparison purposes. Finally, an improved algorithm is introduced that effectively handles severe snap-back geometry and extremely steep negative slope. Results of two typical problems are presented. (20 refs.)

Keywords:  MATHEMATICAL TECHNIQUES -- Finite Element Method  -  STRUCTURAL ANALYSIS

Secondary Keywords:  AUTOMATIC INCREMENTAL ALGORITHM  -  NONLINEAR FINITE ELEMENT EQUATIONS  -  SNAP-BACK GEOMETRY  -  NEGATIVE SLOPE

 


Piping analysis of large scale experiments with ADINA and DAPSY

Mueller, W. Christoph (Gessellschaft fuer Reaktorsicherheit, Garching, West Ger) Source: Computers and Structures, v 26, n 1-2, 1987, p 111-121

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Elem Anal and ADINA, Proc of the 6th ADINA Conf, Jun 10-12 1987, Cambridge, MA, Engl

Abstract: Large scale piping experiments have been carried out recently in Germany at the HDR test facility. The aim of these tests was to investigate the fluid and structural dynamic behavior of a feedwater line and its check valve. GRS has carried out pre- and post-test calculations of these experiments using the fluid dynamic code DAPSY and the structural analysis code ADINA. Static and modal analysis results with ADINA and both coupled and uncoupled analysis results of pressure transients with ADINA and DAPSY are presented and compared with experimental data. The main finding of the work presented in the paper is that the highly sophisticated pipe element in ADINA gives adequate results at reasonable costs and is particularly suitable to investigate special features such as the ovalization of the pipe or local stresses. (18 refs.)

Keywords:  PIPING SYSTEMS -- Computer Aided Analysis  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  FLUID DYNAMICS - Analysis  -  STRUCTURAL ANALYSIS - Dynamic Response  -  PRESSURE EFFECTS - Transients

Secondary  Keywords:  LARGE SCALE EXPERIMENTS  -  ADINA  -  DAPSY


Nonlinear finite element analysis and ADINA, proceedings of the 6th ADINA Conference

Bathe, K. J., ed. Source: Computers and Structures, v 26, n 1-2, 1987, 414p

ISSN: 0045-7949 CODEN: CMSTCJ

Conference: Nonlinear Finite Element Analysis and ADINA, Proceedings of the 6th ADINA Conference., Cambridge, MA, Engl

Abstract: The volume contains 35 papers presented at the meeting, all of which are abstracted separately. Subjects covered include nonlinear structural response, shock loading of structures and structural elements, solution of nonlinear finite element equations, contact problems and algorithms, wind-induced tower vibrations, soil-structure interactions, fluid-structure interactions, heat transfer analysis, slow molding and thermoforming of plastics, local buckling of cold-formed steel sections, analysis of ship structures, explosive loading of structures, and others.

Keywords:  MATHEMATICAL TECHNIQUES -- Finite Element Method  -  DYNAMICS - Analysis  -  COMPUTER AIDED ANALYSIS  -  STRUCTURAL ANALYSIS  -  MATERIALS SCIENCE  -  STRESSES - Analysis

Secondary  Keywords:  NONLINEAR ANALYSIS  -  ADINA CODE  -  MATERIALS MODELS  -  SHOCK LOADING  -  EIREV

 

Problems of numerical CTOD analyses

Amstutz, H. (Technische Hochschule Darmstadt, Darmstadt, West Ger); Seeger, T. Source: Springer-Verlag, 1986, p 21-44

ISBN-10: 0-387-16602-5

Conference: Crack Tip Opening Displacement in Elastic-Plastic Fracture Mechanics, Proceedings of the Workshop on the CTOD Methodology., Geesthacht, W Ger Sponsor: Kernenergieverwertung in Schiffbau und Schiffahrt eV, Studiengesellschaft zur Foerderung, Hamburg, West Ger; Stiftung Volkswagenwerk, Hanover, West Ger

Publisher: Springer-Verlag

Abstract: The interest of fracture mechanics research in CTOD (crack-tip opening displacement) results from its close relationship to the asymptotic strain field. In theoretical investigations a realistic CTOD may therefore depend on a representative strain field in the near-tip region. In order to find out the requirements of an adequate approximation of the near-tip strain field using FEM (Finite Element Method) a set of numerical analyses were performed. The results show that a calculated mesh refinement and an efficient load incrementation regarding constant as well as variable stiffness reveals a definite convergence of the numerical CTOD-values. Applying constant-strain triangular elements (CST-elements) and isoparametrical 8-node-elements the obtained results are in a good agreement with Dugdale- and HRR-field-solutions. (5 refs.)

Keywords:  METALS AND ALLOYS -- Fracture  -  FRACTURE MECHANICS - Mathematical Models  -  MATHEMATICAL TECHNIQUES - Finite Element Method  -  METALS TESTING - Fracture  -  MATERIALS - Crack Propagation  -  STRESSES - Analysis

Secondary  Keywords:  CRACK TIP OPENING DISPLACEMENT (CTOD) ANALYSIS  -  ASYMPTOTIC STRAIN FIELD  -  CONSTANT STRAIN TRIANGULAR ELEMENTS  -  ADINA-ANALYSIS  -  DUGDALE AND HRR-FIELD SOLUTIONS  -  CENTER-CRACKED TENSION SPECIMEN

 


Role of database management in design optimization systems

Park, G. J. (Univ of Iowa, Iowa City, IA, USA); Arora, J. S. Source: Collection of Technical Papers - AIAA/ASME/ASCE/AHS Structures, Structural Dynamics & Materials Co, v 1, 1986, p 620-629

ISSN: 0273-4508 CODEN: CPSCDO

Conference: Collection of Technical Papers - AIAA/ASME/ASCE/AHS 27th Structures, Structural Dynamics and Materials Conference. Part 1: Structures and Materials., San Antonio, TX, USA Sponsor: AIAA, New York, NY, USA; ASME, New York, NY, USA; ASCE, New York, NY, USA; American Helicopter Soc, Washington, DC, USA

Publisher: AIAA (CP863)

Abstract: To study the role of a database and database management system, an interactive design optimization software system IDESIGN5 was developed to solve nonlinear programming problems. Four algorithms are included. IDESIGN5 has been also coupled to the finite element analysis program ADINA to solve nonlinear response optimization problems. The study shows how database and DBMS has to be used in design optimization, advantages and disadvantages of using a database and DBMS, and what interactive capability is possible and its advantages. (19 refs.)

Keywords:  STRUCTURAL DESIGN -- Optimization  -  DATABASE SYSTEMS  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary Keywords:  IDESIGN5  -  NONLINEAR  -  ADINA  -  DATABASE MANAGEMENT  -  LINRM/CFB/PLBA  -  HYBRID METHODS

 

 

Finite elements in CAD and ADINA

Bathe, Klaus-Jurgen (MIT, Cambridge, MA, USA) Source: Nuclear Engineering and Design, v 98, n 1, Dec, 1986, p 57-67

ISSN: 0029-5493 CODEN: NEDEAU

Abstract: The use of finite element methods in computer-aided-design - CAD - is discussed. Some current capabilities are presented and important future developments are outlined. The discussion focusses on the use of the ADINA program in CAD applications. (12 refs.)

Keywords:  MATHEMATICAL TECHNIQUES -- Finite Element Method  -  COMPUTER AIDED DESIGN  -  STRUCTURAL DESIGN

Secondary  Keywords:  ADINA PROGRAM  -  CAD

 


Generic study of the safety aspects of LMFBR roof covers under HCDA load conditions

Smith, B. L. (Federal Inst for Reactor Research, Wurenlingen, West Ger); Jaeger, J. F.; Wenger, H. U.; Inversini, C. Source: r British Nuclear Energy Soc by Thomas, 1986, p 1-6

ISBN-10: 0-7277-0359-5

Conference: Science and Technology of Fast Reactor Safety, Proceedings of an International Conference., Guernsey, UK Sponsor: British Nuclear Energy Soc, London, Engl; European Nuclear Soc; American Nuclear Soc

Publisher: r British Nuclear Energy Soc by Thomas

Abstract: The response of an LMFBR roof cover to HCDA loadings is examined using a combined 2D/3D modelling approach. A generic 3D roof design of box-type construction is adopted and analysis under specimen loads carried out using the finite element program ADINA. The reactor tank and all internal components below roof level are assumed axisymmetric with the containment code SEURBNUK-EURDYN employed to follow the accident progression. An interface between SEURBNUK-EURDYN and ADINA is provided via a 2D simulant roof model, chosen to match the principal response characteristics of the 3D roof, to enable any interaction effects occurring during impact to be assessed. (11 refs.)

Keywords:  NUCLEAR REACTORS, FAST -- Accident Prevention  -  NUCLEAR REACTORS, BREEDER - Core Disruptive Accident  -  COMPUTER SOFTWARE  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary Keywords:  LMFBR-TYPE REACTORS  -  CONTAINMENT CODE SEURBNUK-EURDYN  -  ADINA CODE

 


Structural analysis of a Japanese BWR Mark-I containment under internal pressure loading

Isozaki, T. (JAERI, Tokai-mura, Jpn); Soda, K.; Miyazono, S. Source: Nuclear Engineering and Design, v 104, n 3, Nov, 1986, p 365-370

ISSN: 0029-5493 CODEN: NEDEAU

Conference: Sel Contrib from the Third Workshop on Containment Integr, May 21-23 1986, Washington, DC, USA

Abstract: This paper describes the elastic-plastic analysis of the Japanese BWR MARK-I steel containment vessel under pressure loadings by a general purpose finite element method code ADINA. The present study is focused on the entire deformation of the vessel rather than the stress or strain concentrations around the structural singularities such as penetrations. Elastic deformation limits, displacements and equivalent stress distributions are discussed. (5 refs.)

Keywords:  NUCLEAR REACTORS, BOILING WATER -- Containment Vessels  -  NUCLEAR POWER PLANTS - Structural Analysis  -  PRESSURE VESSELS - Pressure Effects

Secondary Keywords:  ELASTIC-PLASTIC ANALYSIS  -  MARK-I  -  BWR  -  DEFORMATION

 


Special issue on unification of finite element software systems, Proceedings of the 8th UFEM Symposium

Kardestuncer, H., ed. Source: Finite Elements in Analysis and Design, v 2, n 1-2, Apr, 1986, 240p

ISSN: 0168-874X CODEN: FEADEU

Conference: Special Issue on Unification of Finite Element Software Systems, Proceedings of the 8th UFEM Symposium., Sponsor: AVCO Lycoming Corp, USA; Bolt Beranek & Newman Inc, USA; Control Data Corp, USA; Electric Boat (General Dynamics), USA; GE, USA; et al

Abstract: This conference proceedings contains 13 papers. Some topics are cited as examples: interactive color graphical postprocessing as a unifying influence in numerical analysis research, implementing FEA and CAD on personal computers and workstations, with ADINA system in engineering practice, unification of electromagnetic and thermal analyses to determine losses and temperature distribution in a slot-embedded conductor, the finite element machine: an assessment of the impact of parallel computing on future finite element computations, computation and its role in the unification of design; some issues associated with the validation of finite element analysis; CAD/CAM robotics and automated manufacturing and the connection to FEM; toward automated finite element modeling for the unification of engineering design and analysis; and interactive finite element modeling at Ford Motor Company. All papers are abstracted separately.

Keywords:  MATHEMATICAL TECHNIQUES -- Finite Element Method  -  COMPUTER AIDED DESIGN  -  COMPUTER AIDED ENGINEERING  -  COMPUTER GRAPHICS  -  STRUCTURAL ANALYSIS  -  ELECTRIC CONDUCTORS

Secondary  Keywords:  ADINA SYSTEM  -  SLOT-EMBEDDED CONDUCTOR  -  PARALLEL COMPUTING  -  FLEXIBLE MANUFACTURING SYSTEMS  -  EIREV


On the accuracy and convergence of boundary element results for the Floyd pressure vessel problem

Brebbia, C. A. (Computational Mechanics, Southampton, Engl); Trevelyan, J. Source: Computers and Structures, v 24, n 3, 1986, p 513-516

ISSN: 0045-7949 CODEN: CMSTCJ

Abstract: The problem studied by C. G. Floyd involved an axisymmetric vessel subjected to an internal pressure. In 1984 Floyd found that several finite element codes produced suspect results for the analysis of his pressure vessel model. Because of the uncertainties surrounding the comparisons made by first Floyd and then K. J. Bathe, it was decided to run the example again using BEASY in order to compare properly the different types of analysis. Among the results reported is that the finite element analysis required an extremely refined mesh to produce results of sufficient accuracy for problems with such re-entry corners, in spite of the simple geometry of the model. In practice, such re-entrant corners will occur frequently in stress analysis, which questions the validity of using finite element procedures. By contrast, boundary element solutions using BEASY behave remarkably well. For linear stress analysis problems the boundary element method requires a very simple data input and a comparatively coarse discretization against the very refined finite elements grids required by ADINA. 4 refs.

Keywords:  PRESSURE VESSELS -- Stresses  -  MATHEMATICAL TECHNIQUES - Boundary Element Method  -  STRUCTURAL ANALYSIS  -  COMPUTER AIDED ANALYSIS

 


Thermomechanical modeling of the spent fuel test-climax

Butkovich, T. R. (Lawrence Livermore Natl Lab, Livermore, CA, USA); Patrick, W. C. Source: Proceedings - Symposium on Rock Mechanics, 1986, p 898-905

ISSN: 0085-574X CODEN: PSRMA6 ISBN-10: 0-87335-059-6

Conference: Rock Mechanics: Key to Energy Production, Proceedings of the 27th US Symposium on Rock Mechanics., Tuscaloosa, AL, USA: Sponsor: US Natl Committee for Rock Mechanics, USA; Univ of Alabama, Tuscaloosa, AL, USA; ASCE, New York, NY, USA; Assoc of Engineering Geologists, Dallas, TX, USA; Soc of Explosives Engineers, Montville, OH, USA; et al

Publisher: Soc of Mining Engineers of AIME

Abstract: The Spent Fuel Test-Climax (SFT-C) was conducted to evaluate the feasibility of retrievable deep geologic storage of commercially generated spent nuclear reactor fuel assemblies. One of the primary aspects of the test was to measure the thermomechanical response of the rock mass to heating. Instrumentation was emplaced to measure stress changes, relative motion of the rock mass, and tunnel closures during three year of heating from thermally decaying heat sources followed by a six month cooldown period. (11 refs.)

Keywords:  RADIOACTIVE WASTES -- Geological Repositories  -  ROCK MECHANICS - Stresses  -  MATHEMATICAL TECHNIQUES - Finite Element Method

Secondary  Keywords:  SPENT FUEL TEST-CLIMAX (SFT-C)  -  THERMOMECHANICAL MODELING  -  ROCK HEATING  -  COOLING  -  ADINA  -  ADINAT

 


Elastic-plastic fracture mechanics analysis of a CT-specimen - a two-dimensional approach

Larsen, Gunner C. Source: Riso National Laboratory (Report) Riso-M (Denmark), n 2586, Jun, 1986, 24p

ISSN: 0418-6435 CODEN: RNLDD7

Abstract: This report documents the results obtained from an elastic-plastic finite-element analysis of a compact tension specimen. The analysis comprises a plane strain as well as a plane stress approximation. The plane strain and the plane stress approximation have been compared and the plane stress approximation is believed to deliver the best results. (9 refs.)

Keywords:  FRACTURE MECHANICS -- Computer Aided Analysis  -  MATERIALS TESTING - Tensile Tests

Secondary  Keywords:  COMPACT TENSION  -  DISPLACEMENTS  -  J CODES  -  ADINA CODE

 



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