Centrifuge modeling has been considered as an effective means of studying flexural soil–pile interaction, yet the conventional use elastic material to model RC pile prototype is unable reproduce important nonlinear quasi-brittle behavior. It also remains a challenge numerically interaction due nonlinearity both soil and materials. This paper presents small-scale for testing soil–structure under...

Thermomechanical deformations of a body made of two different materials and undergoing simple shearing deformations are studied with the objectives of finding out when and where adiabatic shear bands will initiate and how they will subsequently grow. Each material is modeled as strain and strain-rate hardening but thermally softening. A shear band is presumed to have formed if the introduction ...

One of the most intricate problems in terminal ballistics is the physics underlying penetration and perforation. Several penetration modes are well identified, such as petalling, plugging, spall failure and fragmentation (Sedgwick, 1968). In most cases, the final target failure will combine those modes. Some of the failure modes can be due to brittle material behavior, but penetration of ductil...

Push-pull tests at fixed plastic strain amplitude or stress were run on a TWIP steel, and followed by TEM observations, to analyze its cyclic behavior in relation with the deformation mechanisms. The kinematic isotropic components of flow measured throughout whole hardening/softening stages, their evolution cumulated was compared those tension. rise internal found responsible for initial harden...

The aim of this work was to establish a temperature finish rolling stage Nb/Ti microalloyed steel containing 0.06 wt.% C, 0.77 Mn, 0.039 Nb and 0.015 Ti, using physical simulation. Samples were subjected laboratory simulation at twist plastometer high temperatures, i.e. between 825 950?C. Five pass deformation interpass times selected in accordance with processing parameters five stand finishin...

Recent Bauschinger-type tests conducted on a twinning-induced plasticity (TWIP) steel highlights the important contribution of internal stresses to work hardening [1]. Along this line we present Bauschinger experiments in a Fe-22Mn wt.%-0.6C wt.% TWIP steel. The mechanical behaviour upon load reversal shows transient and permanent softening effects. Determination of the internal stress from the...

We investigate rarefaction waves in nonlinear periodic systems with a ‘softening’ power-law relationship between force and displacement to understand the dynamic behavior of this class of materials. A closed form expression describing the shape of the strongly nonlinear rarefaction wave is exact for n = 1/2 and agrees well with the shape and width of the pulses resulting from discrete simulatio...

The detailed contribution of microstructural-level phenomena, such as dislocation structure development and annihilation, well inter-granular intra-granular backstress fields, to reverse loading behavior in metal alloys remains an area active research debate. ability predict unloading nonlinearities, the Bauschinger effect (BE), changes hardening rates during is necessary for accurate modeling ...