... models to capture the observed response, as well as recent developments in constitutive modeling of filled rubber such as the consequences of the Mullins effect, are discussed. Monotonic and cyclic multiaxial experiments were also conducted using a short, thin-walled, cylindrical specimen subjected...

...Qingda Yang; Brian Cox A previously published computational model of textile composites known as the Binary Model is generalized to allow systematic study of the effects of mesh refinement. Calculations using different meshing orders show that predictions of local strains are mesh independent when...

...Y. Ohbuchi, Research Associate; T. Obikawa, Professor A thermo-elastic-plastic finite element modeling of orthogonal cutting with a large negative rake angle has been developed to understand the mechanism and thermal aspects of grinding. A stagnant chip material ahead of the tool tip, which...

... of the figure, one can discern how the surface crack is imaged by the confocal microscope. crack-edge stress field analysis fatigue cracks wear finite element analysis modelling polymers indentation Polymer matrix composites are often used to replace diseased or missing tissues in dental...

...Lennart Ma¨hler; Kenneth Runesson Constitutive modeling and related numerical issues in conjunction with the macroscopic analysis and simulation of cold compaction and subsequent solid phase sintering of hard-metal are discussed. A key ingredient is the concept of sintering stress , which...

...C. H. Wang; S. A. Barter; Q. Liu This paper presents a closure model for predicting the growth behavior of short cracks in the presence of large-scale yielding and residual compressive stresses, representative of structures that have been shot-peened. The plasticity-induced crack closure model...

...A. B. Movchan We propose a model where a lattice structure is used within an interface layer of finite thickness. An evolution problem is set and studied to analyze the structural changes within the interface during the deformation. Numerical examples are presented for the case of a triangular...

...Masato Hiratani; Hussein M. Zbib A stochastic dislocation dynamics (SDD) model is developed to investigate dislocation glide through dispersed obstacles. The model accounts for: 1) the dynamics of the flight process between successive meta-stable dislocations under various drag mechanism using...

.... The texture image data were then used in a theoretical micro-macro transformation procedure to simulate the orientation evolutions and the stress-strain curves. The procedure was based on a double-slip model of polycrystal plasticity and on averaging of polycrystalline behavior over all grain orientations...

...Alan R. Kallmeyer; Ahmo Krgo; Peter Kurath Many critical engineering components are routinely subjected to cyclic multiaxial stress states, which may include non-proportional loading and multidimensional mean stresses. Existing multiaxial fatigue models are examined to determine their suitability...

...H.-M. Huang; S.-D. Liu; S. Jiang A drawbead model with sheet metal passing through multiple bending-unbending processes was employed in this study to understand the springback phenomenon and to develop a numerical simulation technique for more accurate prediction of the springback process...

...Gorti B. Sarma; James R. Keiser; Xun-Li Wang; Robert W. Swindeman The results of finite element modeling studies to analyze the composite floor tubes of recovery boilers used by the pulp and paper industry are presented. Thermal and mechanical analyses have been carried out to examine the changes...

... . Venter , R. , and Abd-Rabbo , A. , 1980 , Int. J. Mech. Sci. , 22 , pp. 83 – 92 . Pietrzyk, M., and Lenard J. G., 1991, Thermal-Mechanical Modelling of the Flat Rolling Process , Springer-Verlag, Berlin, p. 90. Pietrzyk , M. , and Lenard , J. G. , 1991 , ASME J. Eng. Mater...

...Kuo-Kuang Chen; Chung-Yeh Sa This paper studies the effects of some modeling parameters on the accuracy of finite element simulation in sheet-metal forming. A simple stepdie, which simulates binder forming, is used. In this two-dimensional case, a flat blank is bent into an S-shape, which has...

...C. L. Chow; X. J. Yang; Edmund Chu Based on the theory of damage mechanics, a viscoplastic constitutive modeling of anisotropic damage for the prediction of forming limit curve (FLC) is developed. The model takes into account the effect of rotation of principal damage coordinates on the deformation...

...D. L. Ball; W. S. Chan The ply constitutive relations of an energy-based model for distributed microcracking in continuous fiber reinforced metal matrix composites are presented. Simple models for damage progression are used in conjunction with these damage dependent constitutive relations to allow...

... creep stress relaxation modelling Viscoelasticity Hereditary Behavior TIMETAL 21S Nonisothermal Deformation Multiaxial Thermodynamics A number of advanced material systems (for example metallic, polymer and ceramic based systems) are currently being researched and evaluated...

...S. M. Arnold; A. F. Saleeb; M. G. Castelli Given the mathematical framework and specific viscoelastic model in Part I our primary goal in this second part is focused on model characterization and assessment for the specific titanium alloy, TIMETAL 21S . The model is motivated by experimental...

...Masato Yamamoto; Takashi Ogata Creep-fatigue damage in Inconel 738LC was clarified by in-situ observation and a new creep-fatigue life prediction model was proposed based on the mechanism identified. Creep-fatigue tests on standard specimens show that the tensile hold creep-fatigue lives were...

... in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY . Manuscript received by the Materials Division October 15, 1999; revised manuscript received February 23, 2000. Guest Editors: Raj Mohan and Rishi Raj. 15 October 1999 23 February 2000 modelling ageing creep crystal microstructure...