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Following are some publications 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:
Thermal
stress analysis of a concrete dam
Ishikawa,
M. (Tokyu Construction Co Ltd) Source: Computers and Structures, v
40, n 2, Nonlinear Finite Element Analysis and ADINA, 1991, p
347-352
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
An example will be shown that ADINA was applied to thermal stress
analysis of a concrete dam. The characteristics of thermal stress
analysis of a mass concrete structures that the finite elements
should be added according to the casting schedule of concrete and the
elastic modulus of concrete should be increased with time. The user's
routine was developed to calculate thermal stress in concrete
structures. As an example, temperature and stress distributions were
simulated in a concrete dam which was constructed by our company.
Keywords: Dams, Concrete -- Stresses -
Concrete Construction - Computer Programming
- Stresses--Thermal - Structural Analysis -
Elasticity Secondary Keywords: Thermal Stresses
- Software Package ADINA - Mass Concrete
Structures - Temperature Distribution - Stress
Distribution - Concrete Dams
Global
and local modelling of naval panels subjected to shock loads
Houlston,
R. (Defence Research Establishment Suffield); Slater, J.E. Source:
Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 353-364
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
For efficiency, a finite element model should give sufficiently
accurate results with the minimum number of degrees-of-freedom. It is
thus important to assess the solution accuracy and sensitivity with
respect to the loading and structural details. This paper is
specifically concerned with the accuracy of displacement predictions
from finite element models of plates and stiffened panels subjected
to air-blast loads. In particular, the effects of boundary condition
and loading details on the displacement response are assessed.
Keywords: Structural Panels -- Shock Testing
- Plates--Shock Testing - Mathematical
Techniques--Finite Element Method - Mathematical Models
- Computer Simulation - Structural
Analysis--Dynamic Response Secondary Keywords: Finite
Element Models - Displacement Predictions -
Stiffened Panels - Naval Panels - Air
Blast Loads
J-integral
evaluation from ADINA shell element results
Grebner,
H. (Gesellschaft fuer Reaktorsicherheit (GRS) m.b.H.); Hoefler, A.
Source: Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 365-374
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
A postprocessor program for ADINA shell elements has been developed
to evaluate J-integral values as crack driving forces for ductile
fracture mechanical problems with wall penetrating cracks of regular
simple shape. The performance and accuracy of this procedure have
been proved on several pipe component test cases with pressure,
bending and thermal loads. The method seems to be well suited for the
assessment of such cracks against stable crack initiation. As a rule
the results with shells are calculated with less overall expense than
equivalent three-dimensional continuum element models would
require. Keywords: Domes and Shells -- Computer
Aided Analysis - Pipe Fittings - Computer
Programming - Stresses--Analysis - Mathematical
Techniques--Finite Element Method - Fracture
Mechanics Secondary Keywords: J-Integral Evaluation -
ADINA Shell Elements - Postprocessor Programs
- Software Package ADINA - Cracks - Ductile
Fracture
Sensitivity
of plate response calculations to blast load definition
Santiago,
J.M. (U.S. Army Ballistic Research Lab); Bhattacharya, S. Source:
Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 375-392
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
The ADINA program has been used with three progressively more
accurate loading functions to model the dynamic response of a plate.
The calculations simulated the response of a 19 mm thick aluminum
plate, clamped over a circular opening 914 mm in diameter, subjected
to the blast from an explosive charge suspended 645 mm over its
center. The loading functions were based on prior hydrocode
calculations of the detonation flow using successively refined
computational grids. The influence of clamped edge conditions on the
response was bracketed by allowing no sliding and frictionless
sliding. Calculations were performed using a linear analysis, a
material nonlinear analysis with kinematic hardening plasticity, and
a combined material and geometric nonlinear analysis. The deflection
histories obtained with the three methods of analysis using the three
progressively refined loading functions for the two bracketing
boundary conditions were compared. The response was found to be
sensitive principally to the total impulse delivered to the plate,
though the influence of loading details was detected. Despite a
significant amount of plasticity, the deflections were predominantly
influenced by the strong coupling between the membrane and transverse
deformations, resulting in the response being noticeably affected by
boundary modeling and indicating a need to use the geometric
nonlinear method of analysis. Keywords: Plates
-- Shock Testing - Computer Simulation - Computer
Programming - Structural Analysis--Dynamic Response
- Explosions - Plasticity
Secondary Keywords: Software Package ADINA - Blast Loads
- Aluminum Plates - Nonlinear Analysis -
Deflection - Membranes
Improving
the traffic safety on Bavarian highway through profiled marking with
use of ADINA
Steinauer,
B. (Autobahndirektion Suedbayern); Tao, D. Source: Computers and
Structures, v 40, n 2, Nonlinear Finite Element Analysis and ADINA,
1991, p 393-399
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
To improve the traffic safety a profiled marking system is used on
Bavarian highway. With the help of program ADINA the magnification
factor and the comfort index of the vehicle as well as the optimal
gaps and thicknesses of the profiles are studied. The experimental
measurement is also demonstrated. Keywords: Highway
Signs, Signals and Markings -- Bavaria, Federal Republic of Germany
- Accident Prevention - Highway Systems -
Computer programming - Mathematical Models -
Motor Trucks--Accident Prevention Secondary Keywords: Traffic
Safety - Profiled Markings - Bavarian
Highways - Software Package ADINA
Element
nonlinearity effects on local and global stability
Tabaddor,
F. (Uniroyal Goodrich); Padovan, J. Source: Computers and Structures,
v 40, n 2, Nonlinear Finite Element Analysis and ADINA, 1991, p
401-407
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
In the modelling of elastomeric structures, soft composites, tires,
etc., generally large deformations and significant localized material
nonlinearity are encountered. During the solution of finite element
models of such structure, indefinite stiffness characteristics are
often encountered. Such behavior may be an outgrowth of a variety of
factors, i.e. real physics, model degeneracies, boundary conditions,
etc. This paper revisits various causal factors effecting
definiteness. These considerations will help in modifying and
relaxing some of the current convergence requirements on the global
stiffness. This in turn, will result in a solution of more realistic
models with potentially significant savings in CPU time.
Keywords: Structural Analysis -- Computer Aided Analysis
- Elastomers - Tires - Composite
Materials--Deformation - Mathematical Models -
Mathematical Techniques--Finite Element Method
Secondary Keywords: Software Package ADINA - Global
Stiffness - Local Stiffness - Finite Element
Models
Nonlinear
analysis of buckling behaviour of steel box girder components
Thimmhardy,
E.G. (Concordia Univ) Source: Computers and Structures, v 40, n 2,
Nonlinear Finite Element Analysis and ADINA, 1991, p 469-474
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
Results of a large deflection nonlinear analysis of stiffened
compression plates used in design of box girder bridges are
presented. Both geometric and material nonlinearities were considered
in the formulation. The soundness of the finite element model used in
prediction of the buckling behaviour and ultimate strength of
stiffened compression flanges is shown by comparison with
experimental data. Keywords: Beams and Girders
-- Buckling - Bridges, Box Girder - Plates
- Mathematical Models - Mathematical
Techniques--Finite Element Method Secondary Keywords: Nonlinear
Analysis - Buckling behavior - Steel Box
Girder Components - Stiffened Compression Plates -
Stiffened Compression Flanges
Prediction
of the ultimate capacity of wide flange link beams under cyclic
loading
Ramadan,
T. (McMaster Univ); Ghobarah, A. Source: Computers and Structures, v
40, n 2, Nonlinear Finite Element Analysis and ADINA, 1991, p
409-418
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
The objective of this investigation is to develop an analytical
model to evaluate the seismic performance of the active links in
eccentrically braced frames. The ADINA finite element computer code
is used to gain insight into the behaviour of the links under cyclic
loading. An available experimental set-up and testing program was
modelled. It was found that it is possible to develop a simple yet
effective finite element approach to model the very complex behaviour
of the links. Comparison between analytical predictions and available
experimental results showed good agreement.
Keywords: Structural Frames -- Earthquake Resistance -
Beams and Girders - Mathematical Models -
Computer Programming - Mathematical
Techniques--Finite Element Method Secondary Keywords: Wide
Flange Link Beams - Eccentrically Braced Beams -
Software Package ADINA - ADINA Finite Elecment
Computer Code
Hierarchic
modeling of plates
Babuska,
I. (Univ of Maryland); Li, L. Source: Computers and Structures, v 40,
n 2, Nonlinear Finite Element Analysis and ADINA, 1991, p 419-430
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
The paper surveys some of the results related to approach of
hierarchic modeling of the plate problems. The main ideas are
explained and illustrated by numerical examples.
Keywords: Plates -- Mathematical Models - Mathematical
Models - Mathematical Techniques--Finite Element
Method Secondary Keywords: Hierarchic
Modeling
Combining
numerical analysis and engineering judgment to design deployable
structures
Gantes,
C. (Massachusetts Inst of Technology); Connor, J.J.; Logcher, R.D.
Source: Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 431-440
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
Deployable structures are prefabricated space frames that can be
stored and transported in a compact folded configuration and then
deployed rapidly into a load bearing configuration. The structures
are stable and stress-free in the folded and the deployed
configuration, but exhibit a highly nonlinear behavior during
deployment. Therefore, their design process should include simulation
of their response in two phases: in the deployed configuration under
service loads, and during deployment. The first phase involves linear
analysis while the second one requires a geometrically nonlinear
finite element formulation. Both simulations can be very demanding in
terms of computer storage requirements as the number of degrees of
freedom increases. In addition, the nonlinear analysis is quite
expensive because of the large number of load steps that are
necessary in order to trace the complete load-displacement path. This
paper first describes a set of numerical models that were used to
simulate the exact structural behavior using the finite element
program ADINA. Then, some simplified analytical and numerical models
are proposed that can be applied in the preliminary design stage, or
even for final design, in order to obtain approximate but
satisfactory results at a much lower cost.
Keywords: Structural Frames -- Computer Aided Design -
Structural Analysis - Structural Design--Light
Weight - Mathematical Techniques--Finite Element Method
- Civil Engineering -
Buildings--Prefabricated Secondary Keywords: Numerical
Analysis - Deployable Structures - Prefabricated
Space Frames - Software Package ADINA
Studies
of finite element procedures. The conjugate gradient and GMRES
methods in ADINA and ADINA-F
Tan,
L.H. (ADINA R&D Inc); Bathe, K.J. Source: Computers and
Structures, v 40, n 2, Nonlinear Finite Element Analysis and ADINA,
1991, p 441-449
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
In this paper we present some experiences with the use of the
conjugate gradient and GMRES iterative methods for the solution of
large sparse systems of equations as recently implemented in ADINA
and ADINA-F for structural and fluid flow problems. The conjugate
gradient method preconditioned with the incomplete Cholesky
decomposition is used for the symmetric positive definite systems
resulting from structural problems. For fluid flow problems, the
systems of equations are nonsymmetric and indefinite. For these
systems, the biconjugate gradient and GMRES algorithms with
preconditioning by incomplete LU factorization are used. The
performance of the iterative methods is compared with the direct
solution methods. The results from our numerical experiments show
that the use of these iterative methods for large sparse systems can
lead to significant reductions in storage requirements and
computation times, especially for nonlinear structural dynamics
problems and three-dimensional problems in general.
Keywords: Mathematical Techniques -- Finite Element Method
- Computer Programming--Algorithms - Structural
Analysis - Structural Design - Flow of
Fluids - Computer Aided Analysis
Secondary Keywords: GMRES Iterative Methods - Software
Package ADINA - Conjugate Gradient Method -
Software Package ADINA-F - Large Sparse Systems of
Linear Equations - Symmetric Positive Definite
Systems
System
architectures for support of nonlinear finite element analysis
Cobb,
C. (Texas Instruments Inc); Rolph, W.D.; Wilmarth, D. Source:
Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 451-461
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
A number of new systems technologies have been released over the
last year which significantly affects the possibilities for designing
finite element analysis facilities. Examples include workstations
which have nearly the power of Cray 1 computers, virtual file systems
which provide the equivalent of gigabytes of disc storage, high
performance color hard copy capability, and advances in the software
interoperability layers, such as X-Windows, postscript, and NFS,
which provide the opportunity for increased integration of these
systems opportunities. The result is the opportunity to design finite
element facilities which are dramatically different than facilities
of even five years ago, and which offer the potential of significant
improvement in analyst productivity. These technologies will be
discussed, and the results of the internal testing of these
technologies at Texas Instruments will be described. A reference
facility with migration opportunities to the new technology will be
detailed. Finally, thoughts on future systems technologies, and their
impact on finite element facilities, will be discussed.
Keywords: Computer Architecture -- Applications -
Mathematical Techniques--Finite Element Method -
Computers, Supercomputer - Computer Aided Analysis
- Computer Workstations - Technology
Secondary Keywords: System Architectures - Nonlinear Finite
Element Analysis - Software Interoperability Layers
- Reference Facilities - Systems
Technologies
Analysis
of the fixation of total hip femoral components using ADINA
Harrigan,
T.P. (Univ of Missouri at Kansas City) Source: Computers and
Structures, v 40, n 2, Nonlinear Finite Element Analysis and ADINA,
1991, p 463-468
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
In this study, the stresses within the cement and at the
cement-metal interface have been studied using a large-scale linear
finite element analysis. Also, to assess the effects of
cement-prosthesis debonding, a 3D contact study was conducted which
assessed the effect of several different areas of debonding between
the prosthesis and the cement. The results of finite element analysis
showed that the most likely sites for failure initiation are in the
proximal antero-medial region and at the distal prosthesis tip. The
loading situation which appeared to put the interface in the most
danger for failure is that encountered in stair climbing. The
stresses during normal walking did not seem as critical. Simulation
of cement-metal debonding showed that a drastic increase in cement
stresses occurred under both gait and stair climbing loads, and that
stair climbing loads also produced much higher stresses with
debonding. The effect of pores which often occur in bone cement was
assessed using an analytical elasticity solution for a spherical void
in an infinite medium, which allowed a calculation of the maximum
tensile stress at the surface of a pore. These stresses were
sufficient to initiate fractures near the distal tip of the implant
in many cases, and near the proximal medial region of the implant in
stair climbing. This study concurs to a remarkable degree with a
study of well-functioning total hip replacements recovered at
autopsy. The initiating failure events seen in the retrieved femoral
components matched closely with the predicted areas of failure
initiation. The conclusions of the study were that the
cement-prosthesis interface should be strengthened, porosity in bone
cement should be minimized, and that total hip patient should not use
their prosthetic hip when climbing stairs. (7 refs.)
Keywords: Prosthetics -- Hip Prostheses - Computer
Programming--Algorithms - Stresses - Mathematical
Techniques--Finite Element Method - Adhesives--Bone
Cement - Computer Software Secondary Keywords: Software
Package ADINA - Total Hip Femoral Components -
Implants - Total Hip Replacements -
Porosity
Updating
of finite element models by means of measured information
Fritzen,
C.P. (Univ of Kaiserslautern); Zhu, S. Source: Computers and
Structures, v 40, n 2, Nonlinear Finite Element Analysis and ADINA,
1991, p 475-486
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
The paper deals with the updating of computational models for
elasto-mechanical vibrating structures. The updating procedure is
based on system identification techniques using an incorrect model on
the one hand and measured data of the real system on the other. Some
approaches with different types of measurement data are discussed.
For practical realization the finite element program ADINA is
combined with a nonlinear optimization algorithm and measured
transfer functions are used for the correction of the design
parameters. The application of the procedure is demonstrated by means
of three examples. Keywords: Structural Analysis
-- Dynamic Response - Vibrations - Mathematical
Models - Mathematical Techniques--Finite Element Method
- Computer Programming--Algorithms Secondary Keywords: Software
Package ADINA - Nonlinear Optimization Algorithms -
Elastomechanical Vibrating Structures
Effect
of thermal and residual stresses on the J-integral elastic-plastic
fracture analysis
Kumar,
V. (General Electric Co); Schumacher, B.I.; German, M.D. Source:
Computers and Structures, v 40, n 2, Nonlinear Finite Element
Analysis and ADINA, 1991, p 487-501
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Proceedings of the 8th ADINA Conference, Jul 17-19 1991, Cambridge,
MA, USA
Abstract:
This paper presents a comprehensive finite element study using the
ADINA code with an objective towards developing a procedure for
incorporating the effect of thermal/residual stresses in the
J-integral elastic-plastic estimation method. Thermal-elastic-plastic
finite element studies have been carried out for several
two-dimensional crack geometries including the center-cracked plate,
single-edge cracked plate and cylinders containing axial and
circumferential flaws. Analyses are based on the J<sub]2</sub]
flow theory of plasticity and include material strain hardening.
Results are obtained for various fracture parameters of interest such
as J, COD and mouth-opening displacement (MOD). The J-integral is
calculated by a virtual crack extension method, modified for
thermal-elastic-plastic crack problems. It is shown that the effect
of thermal/residual stresses is negligibly small when fully plastic
conditions are achieved. Based upon these observations and using the
superposition principle for the stress intensity factor K<sub]I</sub]
under small-scale yielding, a modified procedure for estimating
fracture parameters under thermal-elastic-plastic conditions is
formulated. The results thus obtained are compared against detailed
finite element calculations, with an observed excellent agreement
between the two sets of results. Various aspects of the crack-tip
behavior under the conditions of thermal-elastic-plastic deformation
are also discussed. Keywords: Fracture Mechanics
-- Computer Aided Analysis - Stresses -
Elasticity - Plasticity - Computer
Programming - Mathematical Techniques--Finite Element
Method Secondary Keywords: Software Package ADINA -
Thermal Stresses - Residual Stresses -
J-Integral - Elastic-Plastic Fracture Analysis
- Cracked Plates
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