The crack isolating theory combined with internal variable theory including a micro-to-macro transition is applied to study the localization of deformation and the complete stress-strain relation for intermittent crack-weakened rock masses under compressive stresses.

Study on the complete stress-strain relation for mesoscopic heterogenous rock under triaxial compression with moderate or low lateral compressive stress;

Study on the stress-strain relation of liquefied saturated sand-gravel composites and method of parameter identification

Using the tension SHB apparatus, We haveperformed tension tests at high strain rate and obtained the stress-strain relationship curvesof hard aluminum LC.

It is found that pattern transition of stress-strain relation exists in medium density calcareous sand under different confining pressure.

Study of stress-strain relation of concrete filled steel tubular eccentric compression column;

Research on stress-strain relation of unsaturated cohesive soil

During the processes of cold pressing on the whole peanut kernels and the broken ones,many relative factors,such as oil yielding pressure,oil yielding strain,and oil yield efficiency,stress-strain relations and effective compression ratio,etc.

Analysis of problem of pattern transition in stress-strain relations of soils;

The stress-strain relationship of soil established from triaxial shear test is distinguished into two kinds—hardening type and post-peak softening type.

Study on undrained shear behavior and hyperbolic stress-strain relationship of saturated clays;