In this investigation, the three-parameter Modified Mohr–Coulomb (MMC) fracture model and the determination of the material parameters are briefly described. The formulation of the post-initiation behavior is proposed by defining both the explicit softening law and the incremental damage evolution law. As opposed to the existing attempts to simulate slant fracture with material weakening before...

In this paper, the behavior of high-velocity impact Kevlar fabric and elastomer composites was investigated both experimentally numerically. The experimental tests were performed by a gas gun device hemispherical projectiles at different velocities, ranging from 122 m/s to 152 for 2- 4-layer samples. penetration resistance these during determined using ABAQUS/Explicit. present study's novelty l...

A micro-meso-macro analysis framework based on the multi-scale method was employed to analyse mechanical behaviour of marine GFRP stiffened panels. The study aims establish a procedure for assessing impact material composition and weave ultimate strength assessment an essential step in design process, investigation construction materials has great benefit lightweight composite structures. micro...

A size effect is exhibited by metals in cutting processes at small scales: a nonlinear escalation the energy per unit volume with decrease thickness of uncut chip. To understand this phenomenon, numerical model orthogonal micro-cutting f.c.c. single-crystal copper was developed, and three different depths cut (0.8 μm, 1.4 μm 2.0 μm) were considered. Enhanced models crystal plasticity (EMCP) str...

Poly lactic acid (PLA) is widely used for the manufacture of biodegradable stents (BDSs). It was observed and investigated that tensile loads can significantly affect the degradation rate of PLA in our previous study. Additionally, non-uniform degradation can arise from complicated stress distributions in implanted stents under long-term and pulsatile tensile loading. The objective of this work...

This numerical investigation of an advanced Gurson–Tvergaard–Needleman(GTN) model is an extension of the original work of Ben Bettaieb et al. (2011). The model hasbeen implemented as a user-defined material model subroutine (VUMAT) in the Abaqus/explicitFE code. The current damage model extends the previous version by integrating the threedamage mechanisms: nucleation, growth an...

The probabilistic analysis takes into consideration an effect of scatter in elastic and strength properties of composite beam, and velocity of impactor. The damage model is implemented in the FE (finite element) code by a VUMAT (user-defined subroutine). The inter ply failure is modeled using cohesive surfaces between the plies. Dynamic response is obtained using explicit time domain integratio...

The paper briefly summarizes the theoretical derivation of the objective stress rates that are work-conjugate to various finite strain tensors, and then briefly reviews several practical examples demonstrating large errors that can be used by energy inconsistent stress rates. It is concluded that the software makers should switch to the Truesdell objective stress rate, which is work-conjugate t...

Carbon fiber reinforced thermoplastic polymer (CFRTP) laminates can be used in packaging electronics components to reduce weight and shield external disturbance. The CFRTP structures operation are inevitably suffer dynamic loading conditions such as falling rocks, tools impacts. In this study, a strain rate dependent material model for accurately evaluating the response of with different stacki...