The effects of grain size and plastic strain amplitude(ε_(pa)) on hysteresis energy in cyclic deformation of polycrystalline copper are studied.

Preparation and evaluation of stress-elastic and plastic strain diagrams of sintered steels;

Study on the impact of process parameters on the reliability of quad flat package solder joints based on shape prediction and plastic strain calculation;

Finite element simulation and analysis of the plastic strain in cross rolling for AZ31 magnesium alloy

The hardening exponent,value of plastic strain ratio,yield strength,tensile strength,even percentage elongation and other mechanical performances have been studied.

The mechanical performances such as hardening index,value of plastic strain ratio,yield stre.

Analysis on uncertainty of plastic strain ratio-r ratio of metallic sheet;

Effects of electric field annealing on plastic strain ratio(r value)of IF(interstitial free)deep drawing steel sheet were studied by mean of tensile test.

Based on the models of continues mechanics of textured polycrystals (CMTP) and Kochend(?)rfer in which the quadric yield function form is employed, the plastic strain ratio (R-values) of polycrystalline metal (deep-drawing IF steel sheets) is calculated by the approaches of modified maximum entropy method (MMEM) of low-resolution texture analysis and harmonic method.

A method for estimating fatigue damages of bracing members based on plastic strain energy;

The variety of the stress-displacement curve area is selected to be the damage variable instead of the plastic strain energy per cycle.

The total plastic strain energy of a stationary crack per cycle was calculated through 2-D elastic plastic finite element analysis under constant amplitude fatigue loading,and the nonlinear relation of total plastic strain energy with stress intensity factor range was obtained.