The selectivities of the first reaction in Kumar model are not always kept constant when the detailed com-position of raw material is changed.

Nonlinear constitutive model research on concrete considering temperature effect;

Rheological stress constitutive model of medium carbon constructional quality steels under thermal tension;

Program implementation of 3-D expanded constitutive model of Cosserat medium for laminated salt rock;

The constitutive data for the new model is fitted and the simple shearing experiment is utilized to prove the feasibility of the constitutive equation produced in this paper.

Furthermore a constitutive equation using updated Fields and Backofen equation is established.

The main considerations include the following cases: firstly,the microforming-technics system and the test results in the micro-punching,micro-extrusion,micro-deep-drawing and superplastical microforming,secondly,the phenomena and the mechanism of micro-size effect in the microforming,and thirdly,a review on the developed or developing micro-size constitutive equation .

The 3D images of geotechnical constitutive models in the stress space;

Study of elastoplastic neural network constitutive models for sand under different stress paths;

Advances on the research of dynamic constitutive models of saturated soils;

Study on high-temperature constitutive relationship of Ti-46.5Al-2.5V-1.0Cr-0.3Ni alloy

A constitutive relationship has been applied to study the behavior of str uctures and composites of the shape-memory alloy(SMA).

Based on unloading tests of high slopes of permanent ship locks in Three Gorges Project and assuming the unloading stress-strain curves of rock mass is hyperbola nonlinear elastic curve,hyperbola nonlinear elastic unloading constitutive relationship is educed,which overcomes the shortcoming that ordinary elastic-plastic model assumes.