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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:
Finite
element analysis of the impact-contact problem of a portable
telephone using I-DEAS and ADINA
Ho,
H. (Memorex Telex Japan Ltd) Source: Computers and Structures, v 56,
n 2-3, Jul 17, 1995, p 397-409
ISSN:
0045-7949 CODEN: CMSTCJ
Publisher:
Pergamon Press Inc
Abstract:
A finite element analysis has been carried out to simulate the
phenomenon of a portable telephone that falls and collides with a
rigid surface. The new I-DEAS Master Series has been used to create
the complicated geometry and finite element mesh for the portable
telephone model. The finite element data obtained in I-DEAS is
converted to input data for the ADINA system by TRANSOR, an interface
program between I-DEAS and ADINA. The large scale finite element
model has been solved by the iterative solver on a SUN 4/10
engineering workstation. Interesting results at various stages are:
free-fall, impact-contact and, rebound. The possibility of partial
breaking of the portable telephone undergoing the impact-contact
condition is also discussed. (15 refs.) Keywords: Finite
element method - Telephone - Computer
simulation - Computer software - Mathematical
models - Problem solving - Iterative methods
- Computer workstations - Computer systems -
User interfaces Secondary Keywords: Impact contact
problem - Portable telephone - Software
Package I-DEAS - Software Package ADINA -
Iterative solver
Comparison
of computational and experimental modal analyses of an armored
vehicle hull with multiple access openings
Gupta,
A.D. (U.S. Army Research Lab); Santiago, J.M.; Meyer, C. Source:
Computers and Structures, v 56, n 2-3, Jul 17, 1995, p 411-414
ISSN:
0045-7949 CODEN: CMSTCJ
Publisher:
Pergamon Press Inc
Abstract:
A three-dimensional (3D) finite element model of a bare aluminum
vehicle hull with multiple access openings for the driver's hatch,
the commander's cupola, engine access opening, exhaust grills, cargo
hatch, as well as rear door cutout, representing the basic hull of
the armored personnel carrier (APC) M113A2 was generated using PATRAN
3 pre and post-processor program. Frequencies and modeshapes obtained
using the ADINA finite element code were compared with available
experimental modal analysis data for the counterpart hull. (10
refs.) Keywords: Military vehicles -
Modal analysis - Computational methods -
Three dimensional - Finite element method -
Computer simulation - Mathematical models -
Computer software - Codes (symbols)
Secondary Keywords: Armored vehicle hull - Multiple access
openings - Armored personnel carrier - Software
Package PATRAN 3 - Software Package ADINA
Analysis
of reinforced concrete shear wall components using the ADINA
nonlinear concrete model
Khatri,
D. (Univ of Southern California); Anderson, J.C. Source: Computers
and Structures, v 56, n 2-3, Jul 17, 1995, p 485-504
ISSN:
0045-7949 CODEN: CMSTCJ
Publisher:
Pergamon Press Inc
Abstract:
Two shear wall specimens loaded for experimental testing at the
University of California, Berkeley, were modeled using the ADINA
Nonlinear Finite Element Concrete Material Model with plane stress
isoparametric finite elements. Force vs displacement results show
good correlation with the experimental data. The models were loaded
with monotonically increasing static loads. The analyses give an
estimate of the displacement ductility available in shear walls.
Using this technique, finite element modeling can be used for future
structural applications to design for greater displacement ductility.
(15 refs.) Keywords: Shear walls -
Reinforced concrete - Nonlinear equations -
Mathematical models - Computer simulation -
Finite element method - Stresses - Loads
(forces) - Structural design - Structural
analysis Secondary Keywords: Shear wall components -
Nonlinear concrete model - Software Package
ADINA
Three-dimensional
finite element stress analysis of the polypropylene, ankle-foot
orthosis: static analysis
Chu,
T.-M. (New Jersey Inst of Technology); Reddy, N.P.; Padovan, J.
Source: Medical Engineering & Physics, v 17, n 5, Jul, 1995, p
372-379
ISSN:
1350-4533 CODEN: MEPHEO
Publisher:
Butterworth-Heinemann Ltd
Abstract:
An asymmetric 3-dimensional finite element model (FEM) of the
ankle-foot orthosis (AFO) together with the ankle-foot complex was
developed using the computer aided design (CAD) program PATRAN.
Static analysis of normal and pathological motions of the ankle-foot
complex such as the 'drop-foot' problem were conducted using the FEM
program ADINA. A total of 313 three dimensional solid elements and
10 truss elements were used. Heel strike and toe-off condition were
simulated. Results revealed that the peak compressive stress (1.6
MPa) in the AFO model occurred in the heel regions of the AFO and the
maximum tensile stress (0.8 MPa) occurred in the neck region of the
AFO during toe-off. Parametric analyses revealed that the model was
sensitive to the elastic moduli of the AFO and of the soft tissue,
but was relatively insensitive to the ligament stiffness. The
results confirmed the hypothesis that peak stresses in the orthosis
occur in the heal and neck regions of the orthosis. (21 refs.)
Keywords: Braces (for limbs and joints) -
Stress analysis - Finite element method -
Computer aided design - Three dimensional -
Elastic moduli - Tissue - Stiffness
- Ligaments - Computer simulation
Secondary Keywords: Ankle-foot orthosis - Software Package
ADINA - Tensile stress - Static
analysis
Dynamic
analysis of high-level waste storage tanks
Stuart,
R. (ARES Corp); Shipley, L.; Ghose, A.; Hiremath, M. Source:
Computers and Structures, v 56, n 2-3, Jul 17, 1995, p 415-424
ISSN:
0045-7949 CODEN: CMSTCJ
Publisher:
Pergamon Press Inc
Abstract:
DOE 'tank-farm' sites consist of a large number of underground
high-level waste storage tanks (HLWST). Seismic analysis and design
of HLWSTs requires proper evaluation of fluid-structure interaction
and hydrodynamic pressure. Although simplified guidelines for such
tanks are available, a rigorous analysis invariably necessitates
detailed finite element modeling. A systematic step-by-step approach
for dynamic analysis of a HLWST using ADINA fluid elements is
presented here. Initially, an open liquid-filled cylindrical
ground-supported tank model is set up and frequency analysis studies
for different tank configurations conducted with displacement-based
(D-fluid) and potential-based (P-fluid) elements. The results are
compared with the available data. The procedure is then extended to
analyze the response of the tank to El Centro 1940 earthquake ground
history and results verified for displacements and hydrodynamic
pressure. Although ADINA's P-fluid elements give more accurate
frequencies and pressure distributions than D-fluid elements, they
cannot be at present used for seismic loading. The D-fluid elements
are shown to perform adequately for practical problems under
consideration. (14 refs.) Keywords: Tanks
(containers) - Fluid structure interaction -
Hydrodynamics - Finite element method -
Computer simulation - Earthquake effects -
Earthquake resistance - Pressure - Dynamic
response - Mathematical models -
Frequencies Secondary Keywords: High level waste
storage tanks - Dynamic analysis - Seismic
analysis - Displacements - Seismic
loading
Effects
of rock mass anisotropy and non-linearity on the near face stresses
in deep tunnels
Pelli,
F.; Kaiser, P.K.; Morgenstern, N.R. Source: Rock Mechanics and Rock
Engineering, v 28, n 2, Apr-Jun, 1995, p 125-132
ISSN:
0723-2632 CODEN: RMREDX
Publisher:
Springer-Verlag Wien
Abstract:
The near face stresses in unlined, deep tunnels were investigated.
The results of truly three-dimensional finite element analyses are
presented, where a non-axisymmetric stress field was considered. The
analyses were carried out assuming different constitutive
relationships for the rock mass. In particular, linear elastic
isotropic, linear elastic transverse isotropic, nonlinear elastic and
nonassociated elastoplastic constitutive relationships were adopted.
(13 refs.) Keywords: Rock mechanics -
Tunnels - Stress analysis - Anisotropy
- Finite element method - Elastoplasticity -
Elasticity - Computer software - Computer
simulation - Stress concentration
Secondary Keywords: Rock mass anisotropy - Near face
stresses - Software package PISA - Software
package ADINA
Fracture
mechanics study of sliding contacts in glassy polymers
Sadeghipour,
Keyanoush (Temple Univ); Fu, Zhibao Source: American Society of
Mechanical Engineers, Materials Division (Publication) MD, v 68,
Mechanics of Plastics and Plastic Components, 1995, p 11-22
CODEN:
AMEMD9
Conference:
Proceedings of the 1995 ASME International Mechanical Congress and
Exposition, Nov 12-17 1995, San Francisco, CA, USA Sponsor: ASME
Publisher:
ASME
Abstract:
Recently, there has been some concerns regarding the use of polymer
based composite materials in lieu of metallic restorative materials.
Our efforts are targeted towards polymers used in dental restorative
materials which behave in a brittle manner. The material currently
under investigation is a possible replacement for metallic dental
restorative materials. In this study, we seek to develop a finite
element elasto-plastic model of cylinder micro-indentation and
sliding contact as a means of eventually modelling the pin-on-disc
wear test, used to cause fatigue wear. ADINA 6.1 commercial finite
element package was used to perform this task. The primary objective
of this paper is to study the distribution of the stresses and the
corresponding strain behavior around the contact area in order to
edify crack phenomena. To achieve this objective, sliding contact
and fracture mechanics have been combined into a current plain stress
vertical surface and horizontal subsurface crack analyses. The
behavior of both of these cracks under different loading and material
properties are fully investigated. The results so far show that, at
certain loads, the crack tip locations, and specimen material
properties such as elasticity or elastoplasticity can strongly effect
the crack tip's behavior for both of these cracks. The results also
show that the initial crack position strongly influences both the
stress field and the crack propagation direction. (9 refs.)
Keywords: Polymers - Glass -
Fracture mechanics - Friction - Nonmetallic
matrix composites - Mathematical models - Finite
element method - Elastoplasticity - Crack
propagation - Computer software - Wear of
materials - Materials testing Secondary Keywords: Sliding
contacts - Glassy polymers - Pin on disc wear
test - Cylinder micro indentation
Modal
analysis of the low-pressure frame of steam turbine
Krawczuk,
Marek (Polish Acad of Sciences); Ostachowicz, Wieslaw; Murawski,
Lech; Cartmell, Matthew P. Source: American Society of Mechanical
Engineers, Power Division (Publication) PWR, v 3, Power, 1995, p
275-287
CODEN:
AMEPEJ
Conference:
Proceedings of the 1995 International Joint Power Generation
Conference. Part 3 (of 4), Oct 8-12 1995, Minneapolis, MN, USA
Sponsor: ASME PWR
Publisher:
ASME
Abstract:
The objective of this paper is to present the application of the
ADINA Finite Element code to the modal analysis of the whole of the
low pressure part of a turbine frame. The model comprises a frame
represented by isoparametric shell finite elements (each one having
8-nodes and 5 d.o.f per node) whereas the stiffeners are modelled by
bar finite elements (each with 2 nodes and 3 d.o.f. per node). In
this way the ultimate geometrical description of the system contains
12,000 nodes and above 40,000 d.o.f. It should be pointed out that
the weight of the water inside the condenser is included in the
analysis and the accurate deformations of the frame have been
obtained by application of the modified Newton procedure. As a second
step the natural frequencies and the mode shape have been calculated
by means of the method of subspace iteration with acceleration. The
results of the numerical calculations show that the forces acting on
the frame influence the natural frequencies and the mode shapes. (2
refs.) Keywords: Steam turbines -
Structural frames - Mathematical models -
Finite element method - Computer software -
Computer simulation - Stiffness - Computer
aided analysis - Condensers (liquefiers) - Natural
frequencies - Iterative methods - Modal
analysis - Degrees of freedom (mechanics)
Secondary Keywords: Newmark method - Software package
ADINA - Isoparametric shell finite elements -
Newton method
Nonlinear
finite element modeling of the distal carpal arch
Nowak,
Michael D. (Univ of Connecticut Health Cent); Cherry, Adina Source:
American Society of Mechanical Engineers, Bioengineering Division
(Publication) BED, v 31, 1995 Advances in Bioengineering, 1995, p
321-322
CODEN:
ASMBEP
Conference:
Proceedings of the 1995 ASME International Mechanical Engineering
Congress and Exposition, Nov 12-17 1995, San Francisco, CA, USA
Sponsor: ASME BED
Publisher:
ASME
Abstract:
A two-dimensional finite element analysis (FEA) model of the distal
carpal arch was presented, utilizing nonlinear mechanical properties
for the ligaments. A simple compression of the arch before and after
flexor retinaculum release was discussed. Two FEA models were
compared for arch compression: one model evaluated the arch before
and after release utilizing linear springs, and the other utilizing
nonlinear spring values. Using nonlinear springs to represent
ligaments is of great potential and their variation within a given
ligament may be incorporated into a file for the specific bundle
groups. Failure of the ligament fibers can be simulated into the
FORTRAN file to have a more accurate analysis of carpal bone motion
when a ligament is disrupted. Keywords: Bone
- Mathematical models - Finite element method
- Computer simulation - Springs (components)
- FORTRAN (programming language) - Ligaments
- Failure analysis Secondary Keywords: Distal carpal
arch
Effects
of lap joints on damping, strength and stiffness for
chevron-segmented fibrous composites
Finlinson,
L.W. (Utah State Univ); Fronk, T.H.; Womack, K.C. Source: American
Society of Mechanical Engineers, Noise Control and Acoustics Division
(Publication) NCA, v 18, Materials for Noise and Vibration Control,
1994, p 87-96
CODEN:
ASMNER
Conference:
Proceedings of the 1994 International Mechanical Engineering Congress
and Exposition, Nov 6-11 1994, Chicago, IL, USA Sponsor: ASME
Publisher:
ASME
Abstract:
Passive damping for extensional loads can be created by special
design of fibrous composites. The concept takes advantage of the
shear coupling that occurs with off-axis loading. As fibers align
themselves with the force, shearing occurs. The greatest shear
occurs at ends that are free to move. Implementing a chevron pattern
of segments for each lamina allows for more free ends and potentially
more damping. Placing a viscoelastic material between plies of
opposing angles allows for ease in shear and an increase in damping.
The damping design, with cut sections, comes at the expense of
strength. Lap joints have been considered for joining the segments
and maintaining some degree of strength of the design. This paper
addresses the effects of lap joints to both strength and damping. The
finite element package ADINA has been used to model a single lap
joint to show trends and establish a general understanding of
cross-motion or shear coupling. Test specimens of varying lap joint
lengths were constructed and tested against a non-segmented pattern.
A significant increase in extensional damping is created with the
pattern. The lap joint specimen without viscoelastic loses strength
when compared to an uncut specimen. However, with the presence of a
viscoelastic layer, the lap joints provide strength over a
constrained layer design. (5 refs.) Keywords: Damping
- Fiber reinforced materials - Joints (structural
components) - Strength of materials - Finite
element method - Computer simulation -
Viscoelasticity - Stiffness
Secondary Keywords: Chevron segmented fibrous composites -
Software package - ADINA - Shear
coupling
Coupled
FDM/FEM model for the continuous casting process
Funk,
G. (Univ of Siegen); Boehmer, J.R.; Fett, F.N. Source: International
Journal of Computer Applications in Technology, v 7, n 3-6, 1994, p
214-228
ISSN:
0952-8091 CODEN: IJCTEK
Publisher:
Inderscience Enterprises Ltd
Abstract:
The solidification and further cooling as well as the formation of
thermal stresses were investigated using a coupled mathematical model
in order to derive a better understanding of the continuous casting
process which is important in increasing productivity and quality of
the product. Mass transport, solidification and/or remelting, and
heat transfer were calculated using a finite difference method while
thermal-mechanical stresses and strains were simulated with the ADINA
program. Thermal and stress analysis were coupled to consider
feedback. Attention was directed to the highly nonlinear material
behaviour, and the three-dimensional and transient contact. The
reliability of the solutions was dependent on the discretization and
element configuration chosen. Alternative possibilities of various
grids and material models were discussed with respect to accuracy and
CPU-time. (9 refs.) Keywords: Mathematical
models - Continuous casting - Finite element
method - Finite difference method -
Solidification - Cooling - Thermal
stress - Defects - Productivity -
Computer simulation - Nonlinear systems -
Thermal effects - Three dimensional
Secondary Keywords: Thermomechanical strains - Transient
contact - Element strain formulation - Product
quality improvement
Strength
of tubular members containing holes
Hsu,
T.M. (Chevron Petroleum Technology Co) Source: Journal of Offshore
Mechanics and Arctic Engineering, Transactions of the ASME, v 116, n
3, Aug, 1994, p 154-162
ISSN:
0892-7219 CODEN: JMOEEX
Publisher:
ASME
Abstract:
A small-scale, compressive-load test program was conducted at
Chevron to determine the strength of tubular members with 1 to 3
holes. The parameters evaluated include the hole size, hole shape,
hole location, and number of holes. Results from these tests provide
a basis for platform ultimate strength calculations that are needed
in making decisions on platform repairs. More than 50 specimens were
tested in air under displacement control. Test specimen lengths were
limited by the test apparatus to 45 in. (1,143 mm). Tubulars used in
the test had an outside diameter of 3.5 in. (89 mm), which gave
member slenderness ratios of about 40. The tests were needed because
of the lack of relevant compression tests on members with holes.
Based on test results, there appears to be a limiting value of hole
size below which the compression-load capacity of the member is
practically not affected by the existence of the hole. For example,
a hole that is 10 percent of the member diameter does not
significantly reduce member strength. This means remedial treatment
is not necessary for many small holes, when ultimate strength is the
controlling consideration. Nonlinear finite element shell analyses
using both ADINA and FACTS computer programs and a simplified
analysis using DENTA-II PC program were performed and results
compared with data. We found that nonlinear finite element programs
provide good predictions of capacities of members with holes, and
that a simplified DENTA-II program provides adequate and efficient
predictions. Keywords: Strength of materials
- Structural members - Production platforms -
Load testing - Test facilities - Compression
testing - Load limits - Finite element
method - Computer software - Data reduction
- Repair - Data acquisition
Secondary Keywords: Tubular members - Hole size -
Hole shape - Hole location - Number of
holes - Compressive load test program - Platform
repairs - Slenderness ratio - Compression
load capacity
Keynote
paper: remarks on the development of finite element methods and
software
Bathe,
Klaus-Jurgen (Massachussetts Inst of Technology) Source:
International Journal of Computer Applications in Technology, v 7, n
3-6, 1994, p 101-107
ISSN:
0952-8091 CODEN: IJCTEK
Publisher:
Inderscience Enterprises Ltd
Abstract:
A brief personal, historical account of some development of finite
element methods and software is given, and then some recent advances
are surveyed. The paper focuses on the research and developments of
the author and his colleagues/students, and the developments of the
programs SAP IV, NONSAP and ADINA. (37 refs.)
Keywords: Finite element method - Computer
software - Software engineering - History
- Computer aided engineering - Computer
programming Secondary Keywords: Finite element software
- Finite element development
Failure
of integrally stiffened graphite/epoxy cylinders
Graves,
Michael J. (Massachusetts Inst of Technology); Sawicki, Adam J.
Source: Composite Structures, v 27, n 3, 1994, p 269-282
ISSN:
0263-8223 CODEN: COMSE2
Abstract:
Nine sealed and pressurized graphite/epoxy cylinders were tested to
examine the ability of stiffening strips to redirect propagating
damage. The materials used were Hercules A370-5H/3501-6 prepreg
fabric and AS4/3501-6 prepreg unidirectional tape. The layup of the
unstiffened regions of the cylinders was four plies of fabric with
the quasi-isotropic layup.
Three different four ply unidirectional tape circumferential
stiffener layups were tested. Cylinders were nominally 610 mm long
with a radius of 152 mm. Stiffener width was 76 mm.
Through-the-thickness slits of four lengths, 51 mm, 102 mm, 165 mm
and 178 mm (1.0 mm wide), oriented along the axial
direction were pre-cut into the cylinders. The cylinders were tested
monotonically with increasing pressure till rupture. Stress-strain
data were noted. The finite element code ADINA was used to examine
the two-dimensional response of the cylinders. Three slit lengths
were modeled to gain an understanding of the local stress and strain
response ahead of the slit in the stiffened region. Contour plots of
maximum strain and the orientation of these maximum values with
respect to the load direction near slits and stiffened regions were
generated. These analytical models showed lower strains in the
stiffened regions ahead of the slit compared to the strains in the
unstiffened regions. The local orientation of the maximum tensile
strains in the stiffened regions ahead of the slit was also rotated
with respect to the projected direction of the slit. At failure,
propagating damage bifurcated prior to reaching the stiffener and
progressed circumferentially before stopping. It is concluded that
the maximum tensile strain and its orientation ahead of the slit as
derived from the analysis plays a key role in the damage propagation
in these cylinders. (26 refs.)
Keywords: Composite
structures - Graphite fiber reinforced plastics -
Epoxy resins - Cylinders (shapes) - Pressure
effects - Mechanical testing - Stress
analysis - Strain - Crack propagation -
Mathematical models - Finite element method -
Failure (mechanical) Secondary Keywords: Graphite/epoxy
cylinders - Software package ADINA
Stress
distribution in SiCp-Al composite with
interphase
Li,
Shouxin (Academia Sinica); Sun, Lizhi; Wang, Zhongguang; Tang,
Yandong Source: Journal of Materials Science Letters, v 13, n 14, Jul
15, 1994, p 1022-1026
ISSN:
0261-8028 CODEN: JMSLD5
Publisher:
Publ by Chapman & Hall Ltd
Abstract:
A finite element method was used to analyze the stress distribution
in the SiCp-Al composite with
interphase. An ideal interphase with uniform thickness was assumed to
exist at the SiCp-Al interface. (13
refs.) Keywords: Metallic matrix composites
- Aluminum - Silicon carbide - Particles
(particulate matter) - Reinforcement - Shear
stress - Stress analysis - Interfaces
(materials) - Failure (mechanical) - Thermal
expansion - Mathematical models - Finite
element method - Computer software
Secondary Keywords: Silicon carbide-aluminum composites - Stress
distribution - Interphase - Software package
ADINA
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