A methodology to calculate stress-dependent strains form the very beginning of concrete placing is developed, which can be done directly by vibrating wire strain readings without the efforts to identify time dependent parameters such as expansion coefficients of early age concrete.

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;

A new relationship of stress and strain was brought to material 20Cr which is commonly applied in super high pressure vessel.