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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:
Tasaisesti
kuormitetun lujitemuovilaatan geometrinen epaelineaarisuus
(Geometrical nonlinearity of a uniformly loaded reinforced plastic
plate)
Hentinen,
Markku (Laivatekniikan Lab); Holm, Gunnar Source: Valtion Teknillinen
Tutkimuskeskus, Tutkimuksia, n 694, 1990, 57p Language: Finnish
ISSN:
0358-5077 CODEN: TUTUDX
Abstract:
The geometrical nonlinearity of a uniformly loaded plate becomes
significant if the deflection exceeds half of the plate thickness.
This is common in the bottom panels of boat hulls, where the allowed
stress rather than the maximum deflection is used as the design
criterion. The analysis of the problem must then be extended to
include membrane stresses, which affect both the stress distribution
and the maximum deflection of the plate. The objective of this work
was to study the conditions under which membrane effects have to be
taken into account in the structural analysis of a typical hull
panel. The influence of the boundary conditions and the geometry of
the panel as well as the orientation of the laminate are considered.
Suitable calculation methods are discussed. The chosen method,
introduced and programmed by G.H. Little (1987), is based on the
direct minimization of the total potential energy. In a Micro-VAX the
required CPU time for one loading case was fairly short. Some
calculations were also made using the finite element program ADINA
and the compatibility of the results was found to be satisfactory.
The results for a typical rectangular panel show the importance of
membrane effects at surprisingly low loading levels. Linear
calculation methods cannot therefore be applied to the analysis of
large panels in boat structures. (8 refs.)
Keywords: Ships
-- Hulls - Plastics, Reinforced - Applications -
Structural Design - Loads - Plates - Deflection
- Plastics Laminates - Structural Analysis -
Mathematical Techniques - Finite Element Method
Secondary Keywords: Boat Hull Bottom Panels - Reinforced
Plastic Plates - Uniformly Loaded Plates -
Membrane Stresses - Finite Element
Analysis
Failure
behavior of a pipe system with a circumferentially orientated flaw -
analytical and experimental investigations
Mikkola,
T.P.J. (Technical Research Cent of Finland); Diem, H.; Blind, D.;
Hunger, H. Source: Nuclear Engineering and Design, v 112, Mar, 1989,
p 197-210
ISSN:
0029-5493 CODEN: NEDEAU
Conference:
Selected Papers from the 13th MPA Seminar, Oct 8-9 1987, Stuttgart,
Austria
Abstract:
At the German HDR-test-facility a pipe failure experiment was
performed at a fullsize feedwater piping system under operating
conditions of T = 240 °C, pi =
10.6 MPa and with an elevated oxygen content in the pressure medium.
The loading was internal pressure and a cyclic varying bending moment
with an R-ratio of 0.5. The analyses of the fracture surface
indicated the strongly growing influence of corrosion effects on the
crack propagation rate with decreasing loading frequency. The cyclic
crack growth and the leak-before-break behavior of the piping system
could be explained on the basis of results of finite element
calculations using the ADINA-code. (15 refs.)
Keywords: Piping Systems -- Failure - Nuclear
Reactors--Piping Systems - Steel--Crack Propagation
- Fracture Mechanics Secondary Keywords: HDR Test
Facility - Crack Growth
Shock
isolation systems modeled with ADINA
Crawford,
John E. (TRW); Jones, R.D. Source: Computers and Structures, v 32, n
3-4, 1989, p 601-607
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
A shock isolation system (SIS) may include rather complicated
mechanical components. To analyze, or simulate their response,
requires not only a nonlinear solution procedure, but also the
capability to model such complicated phenomena as liquid springs,
chains, friction and nonlinear damping. The modeling of some SIS
components requires minor modifications to ADINA as well as employing
the code's existing capabilities in atypical ways. The paper
describes the techniques employed and shows some of the predicted SIS
responses. (2 refs.) Keywords: Shock Absorbers
-- Mathematical Models - Computer Software -
Mathematical Techniques--Finite Element Method
Secondary Keywords: Shock Isolation Systems - Liquid
Springs - Nonlinear Damping - Software
Package ADINA
Numerical
analysis of dynamic split cylinder tests
Tedesco,
Joseph W. (Auburn Univ); Ross, C. Allen; Brunair, Robert M. Source:
Computers and Structures, v 32, n 3-4, 1989, p 609-624
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
To investigate the effects of strain rate on the tensile strength of
concrete, split cylinder tests of plain concrete specimens were
conducted on a Split-Hopkinson Pressure Bar (SHPB). To ascertain the
stress condition in the material specimens at failure, a
comprehensive finite element method (FEM) study was conducted on the
SHPB experiments. Both linear and nonlinear analyses were performed.
From the results of the numerical analyses, the dynamic states of
stress occurring in the split cylinder prior to failure as well as
the mode of failure are revealed. (23 refs.)
Keywords: Concrete Testing - Cylinders -
Concrete--Mechanical Properties - Failure
Analysis--Stresses - Mathematical Techniques--Finite
Element Method Secondary Keywords: Dynamic Split Cylinder
Tests - Strain Rate - Split Hopkinson
Pressure Bar - Dynamic Stresses
Wave
propagation through layered systems
Tedesco,
Joseph W. (Auburn Univ); Landis, David W. Source: Computers and
Structures, v 32, n 3-4, 1989, p 625-638
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
A comprehensive numerical analysis is conducted to evaluate the
effectiveness of layered systems to provide enhanced protection
against blast effects from conventional weaponry. Several variations
of layered systems were investigated. The results of the
investigation indicate that layered media significantly reduce stress
transmission, thereby eliminating interior spalling. (18 refs.)
Keywords: Laminated Products -- Stresses -
Military Equipment--Shelters - Waves--Propagation
- Blasting--Protection - Mathematical
Techniques--Numerical Analysis - Concrete
Construction Secondary Keywords: Layered Systems -
Blast Effects - Conventional Weaponry -
Concrete Spalling
3D-crack
propagation using ADINA
Siegele,
Dieter (Fraunhofer Inst fuer Werkstoffmechanik) Source: Computers and
Structures, v 32, n 3-4, 1989, p 639-645
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
A method was developed and implemented in the finite element program
ADINA for the numerical simulation of 2D- and 3D-crack propagation.
The elastic-plastic 3D analyses results for different compact-tension
specimens and a plate containing a semi-elliptical surface crack were
compared with experimental findings. The results show the importance
of consideration of the local stress state (constraint) in the
crack-tip region in addition to the primary loading parameter J.
Moreover, a creep crack growth experiment was simulated using the
creep integral C as a crack growth controlling parameter. (18
refs.) Keywords: Fracture Mechanics -- Computer
Aided Analysis - Materials--Crack Propagation -
Computer Software - Mathematical Techniques--Finite
Element Method - Materials Testing--Analysis
Secondary Keywords: Three Dimensional Analysis - Software
Package ADINA - Compact Tension Specimens - Local
Stress State - Creep Crack Growth
Finite
strip analysis of plates and stiffened panels subjected to air-blast
loads
Houlston,
Robin (Defence Research Establishment Suffield) Source: Computers and
Structures, v 32, n 3-4, 1989, p 647-659
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
During the preliminary design stage, it is important that structural
response analysis methods be quick but reasonably accurate. One such
method, applicable to plate and shell structures, is the 'finite
strip method'. This paper first presents a review of the finite strip
method. A detailed description is then given of the extension of the
finite strip method to nonlinear analysis of air-blast loaded plates
and stiffened panels. For validation of the finite strip results,
comparison is made to those found using ADINA and to experiment. (15
refs.) Keywords: Plates -- Structural Analysis
- Structural Panels--Structural Analysis - Structural
Analysis--Dynamic Response - Blasting -
Mathematical Techniques--Numerical Methods - Computer
Aided Analysis Secondary Keywords: Finite Strip Analysis
- Stiffened Panels - Air Blast Loads -
Software Package ADINA
Analysis
for web crippling behaviour of cold-formed steel members
Sivakumaran,
K.S. (McMaster Univ) Source: Computers and Structures, v 32, n 3-4,
1989, p 707-719
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
This paper is concerned with the application of non-linear finite
element procedures in the analysis for web crippling behaviour of
thin-walled mono-symmetric (lipped channel section) cold-formed steel
members subjected to interior one-flange loading conditions.
Elasto-plastic large deformation responses of three such members have
been obtained using the ADINA finite element program. Flange curling,
the gradually increasing separation between flange and support, was
studied through a contact surface model. A comparison of the
non-linear finite element predictions with experimental results shows
generally good agreements. Keywords: Steel
Structures -- Structural Analysis - Steel--Cold Working
- Beams and Girders--Deformation - Mathematical
Techniques--Finite Element Method - Computer
Software Secondary Keywords: Web Crippling -
Cold-Formed Steel Members - Nonlinear Analysis
- Software Package ADINA - Flange
Curling
Ein
Verfahren zur Berechnung des nichtlinearen Tragverhaltens von
staehlernen Rahmentragwerken mit finiten elementen (Method for
calculating the nonlinear load-bearing behavior of steel frame
structures by means of finite elements)
Bock,
H.-M. (Bundesanstalt fuer Materialforschung und pruefung); Brocks,
W.; Laeer, R.; Marotzke, Ch. Source: Stahlbau, v 58, n 12, Dec, 1989,
p 365-370 Language: German
ISSN:
0038-9145 CODEN: STAHAE
Abstract:
In order to study the nonlinear load bearing and deformation
behavior of steel frames, a finite two-node beam element is presented
which makes it possible to perform constitutionally and geometrically
nonlinear analyses of arbitrarily shaped I-beams. This module was
especially developed for the general purpose finite element program
ADINA. The performance of this module is demonstrated both on the
basis of a comparison with the results of analytic and
three-dimensional finite element calculations on a single bar and on
the basis of ultimate-load studies of frame structures of practical
relevance. (9 refs.) Keywords: Structural Frames
-- Buckling - Structural Analysis - Loads -
Stresses - Analysis - Mathematical Techniques -
Finite Element Method - Steel Structures -
Stresses Secondary Keywords: Steel Frame Structures -
Large Deformation Analysis - Nonlinear Finite
Element Analysis
Comportement
dynamique des lignes aeriennes de transport d'electricite du aux bris
de cables. I. Modelisation mathematique (Dynamic behavior of aerial
power transmission lines due to cable rupture - I. Mathematical
modeling)
McClure,
Ghyslaine (Ecole Polytechnique de Montreal); Tinawi, Rene Source:
Canadian Journal of Civil Engineering, v 16, n 3, Jun, 1989, p
335-353 Language: French
ISSN:
0315-1468 CODEN: CJCEB8
Abstract:
This paper presents a mathematical model for the nonlinear dynamic
analysis of aerial electric transmission lines subjected to conductor
breakage. The model uses existing finite elements and validated
numerical techniques available in most commercial programs capable of
handling nonlinear dynamic analysis. ADINA is used in this study. In
comparison with other models, the novel approach presented here
focuses on the discretization of the conductors as well as the
supporting structures, specially near the breakage point. Dynamic
interactions between all the structural components are therefore
considered and comparisons with simpler models emphasize the
importance of these interactions, the effects of geometric
nonlinearities present in the conductors and in the supporting
structures, and the contribution of higher modes. The mathematical
model is validated with 7 of 56 tests conducted on reduced-scale
physical models. The results are very encouraging for designers
interested in validating their design criteria for longitudinal
dynamic loads by use of existing nonlinear dynamic finite element
analysis packages. (20 refs.) Keywords: Electric
Lines -- Aerial Conductors - Electric Cables - Failure
- Mathematical Models - Computer Simulation -
Electric Conductors - Failure - Electric Power
Transmission Secondary Keywords: Nonlinear Dynamic
Analysis - Software Package ADINA - Conductor
Breakage Simulation - Towers - Pylons -
Finite Element Programs
Numerical
simulation of excavation in elastoplastic soils
Borja,
Ronaldo I. (Stanford Univ); Lee, Seung R.; Seed, Raymond B. Source:
International Journal for Numerical and Analytical Methods in
Geomechanics, v 13, n 3, May-Jun, 1989, p 231-249
ISSN:
0363-9061 CODEN: IJNGDZ
Abstract:
A finite element method for simulating excavation in elastoplastic
soils which produces a 'unique' solution for any number of excavation
stages is presented. The proposed method satisfies the uniqueness
principle for elastic materials postulated by K. Ishihara, and
degenerates to the methods presented in the ADINA code and by P. T.
Brown and J.R. Booker and J. Ghaboussi and D.A. Pecknold for the
simple elastic cases. The non-linear (elastoplastic) finite element
equations are derived from a variational formulation which accounts
for time-varying problem domain and boundaries. For a monotonically
shrinking elastoplastic domain and the von Mises and Drucker-Prager
yield models, it is shown that the proposed method also produces a
'unique' solution independent of the number of excavation stages. (16
refs.) Keywords: Excavation -- Computer
Simulation - Soils--Elastoplasticity - Soil
Mechanics - Mathematical Techniques--Finite Element
Method
Structural
analysis and design of deployable structures
Gantes,
Charis J. (Massachusetts Inst of Technology); Connor, Jerome J.;
Logcher, Robert D.; Rosenfeld, Yechiel Source: Computers and
Structures, v 32, n 3-4, 1989, p 661-669
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
Deployable-collapsable structures have many potential applications
ranging from emergency shelters and facilities, through relocatable,
semi-permanent structures, to space-station components. Their main
advantages are the small volume they occupy during storage and
transportation, and their fast and easy erection procedure. A new
concept of self-stabilizing deployable structures featuring stable,
stress-free states in both deployed and collapsed configuration shows
even higher promise. During the deployment phase these structures
exhibit a highly nonlinear behavior. A large displacements/small
strains finite element formulation is used to trace the nonlinear
load-displacement curve, and to obtain the maximum internal forces
that occur in the members of the structure during deployment. The
influence of various parameters that affect the behavior of the
structures, such as geometric shape, dimensions of the members,
cross-sectional properties and kinematic assumptions is being
investigated. (22 refs.) Keywords: Buildings --
Structural Analysis - Structural Design -
Mathematical Techniques--Finite Element Method
Secondary Keywords: Deployable Structures - Collapsible
Structures - Load-Displacement Curves - Internal
Forces
Studies
of finite element procedures. An evaluation of preconditioned
iterative solvers
Angeleri,
Francesco (European Cent for Scientific and Engineering Computing);
Sonnad, Vijay; Bathe, Klaus-Jurgen Source: Computers and Structures,
v 32, n 3-4, 1989, p 671-677
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
In this paper we study the use of conjugate gradient iterative
solution techniques for the solution of sparse systems of algebraic
equations generated by the problem ADINA, as well as those resulting
from a finite element discretization of fluid flow problems. The
symmetric positive definite systems generated by ADINA for static
structural analysis are solved with a conjugate gradient iterative
method with incomplete Cholesky preconditioning. A biconjugate
gradient method is used with incomplete LU factorization as a
preconditioner to solve the equations with nonsymmetric coefficient
matrices arising in the analysis of a fluid flow problem. The results
of our numerical experiments show that preconditioned iterative
methods can have significant advantages over direct methods in the
solution of large, sparse systems of equations arising in 3D static
structural analysis. However, the equations arising in fluid flow
analysis are not as amenable to iterative solution techniques of the
kind described in this paper. (15 refs.)
Keywords: Mathematical Techniques -- Finite Element Method
- Computer Aided Analysis - Computer Software
- Flow of Fluids--Computer Aided Analysis - Structural
Analysis--Computer Aided Analysis Secondary Keywords: Preconditioned
Iterative Solvers - Software Package ADINA -
Conjugate Gradient Iterative Method - Biconjugate
Gradient Method
Design
sensitivity analysis principle and its implementation into ADINA
Arora,
J.S. (The Univ of Iowa); Cardoso, J.E.B. Source: Computers and
Structures, v 32, n 3-4, 1989, p 691-705
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
This paper describes a continuum principle of design sensitivity
analysis of linear and nonlinear structures for shape and nonshape
optimization problems. The principle has been derived previously
using the virtual work equation, and the concepts of reference volume
and adjoint structure. It is stated in a form that is more convenient
to interpret and discretize for numerical calculations. Physical
interpretation for each implicit design variation term in the
principle is given relating it to the virtual work of internal or
external forces, or their explicit design variations. A
discretization of the principle using usual shape functions of finite
element analysis is developed for implementation into computer
programs, such as ADINA. Some numerical examples are solved to show
practical use of the principle. (23 refs.)
Keywords: Structural Design -- Optimization -
Mathematical Techniques--Sensitivity Analysis - Computer
Software Secondary Keywords: Design Sensitivity Analysis
- Software Package ADINA - Shape Optimization
- Virtual Work
Finite
element analysis of wave propagation in an elastic half-space under
step loading
Laturelle,
F.G. (Office Natl d'Etudes et de Recherches Aerospatiales
(O.N.E.R.A.)) Source: Computers and Structures, v 32, n 3-4, 1989, p
721-735
ISSN:
0045-7949 CODEN: CMSTCJ
Conference:
Nonlinear Finite Element Analysis and ADINA - Proceedings of the 7th
ADINA Conference, Aug 2-4 1989, Cambridge, MA, USA
Abstract:
This paper presents some numerical experiments in finite element
procedures applied to a wave propagation problem. Finite element
computations with ADINA are compared with an exact solution obtained
by the use of integral transforms, in the case of an elastic
half-space loaded by a step of pressure applied uniformly over a
circular area at the surface. The selection of a convenient mesh, the
time integration method, and the time step are considered with
respect to the spectral properties of the method. It is shown that
the best results for a two- or three-dimensional problem are obtained
with a consistent mass idealization, and a high-frequency weakly
filtering scheme. Special attention is given to the wave patterns at
early times near the surface. (29 refs.)
Keywords: Materials Science - Waves--Propagation
- Elasticity - Mathematical Techniques--Finite
Element Method - Computer Software - Pressure
Effects Secondary Keywords: Elastic Half-Space -
Step Loading - Software Package ADINA
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