84 research outputs found
Implicit integration scheme for porous viscoplastic potential-based constitutive equations
This paper deals with a viscoplastic potential-based model allowing thermomechanical damage behavior modeling of porous materials. The model describes rate dependent effects, hardening, creep as well as defects coalescence and propagation. Kinematic and isotropic hardening effects are taken into account by a set of internal state variables. The integration and implementation of the model into the FE code using a fully implicit integration scheme is exposed. Finally, it 19s used to predict mechanical behaviour degradation of solder layers used in power electronic packaging. Stress-strain behaviour and the evolution of volumic fraction of voids for the material under cyclic loading are presented
How Do Hospital-Specialty Characteristics Influence Health System Responsiveness? An Empirical Evaluation of In-Patient Care in the Italian Region of Emilia-Romagna
A Self-Consistent Analysis of the Stiffening Effect of Rigid Inclusions on a Power-Law Material
Closure to “Discussion of ‘The Usefulness of Elementary Theory for the Linear Vibrations of Layered, Orthotropic Elastic Beams and Corrections to Two-Dimensional End Effects’” (1992, ASME J. Appl Mech., 59, pp. 240–241)
Thickness Effects Are Minor in the Energy-Release Rate Integral for Bent Plates Containing Elliptic Holes or Cracks
The Influence of Two-Dimensional End Effects on the Natural Frequencies of Cantilevered Beams Weak in Shear
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