When the value of viscosity coefficients is less than that of elastic shear modulus, the amplitudes of pore pressure change slightly with the variation of the viscosity coefficients and the viscosity coefficients affect the amplitudes of effective stresses considerably.

Analytical results show that after the degraded stiffness is involved in the present model, elastic shear strain (or displacement) increases while plastic part decreases. Degraded stiffness has no influence on the stability of the system composed of shear band and elastic rock.

If shear stress at ends of specimen is considered and the same flow shear stress level in shear band is reached, then uniform elastic strain and linear elastic shear displacement are increased;

The Hardin equation (1968) is usually adopted to calculate the elastic shear modulus Gmax of the saturated sand during earthquake in the dynamic effective stress analysis of soil structure. But the validity has not been confirmed because of the limitation of test facilities before.

In this paper, a new type of the instrument system for site measure and analysis of elastic waves in earthquake engineering----microcomputer recording and analyzing system isintroduced. It's advantages are illustrated. It's hardwares and softwares are analyzed.

By use of the linear stiffness matrix of elastomer shear pad and the matrix method in generalized coordinates, an universal mathematic model for RCC (Remote Center of Compliance) device is established. Its physical implication and chrateristies are described and analysed with the practical RCC models with three and six pads.

Based on the complicated response of dilatancy of sand under cycle loading,the different physical states,including preliminary positive dilatation,secondary positive dilatation,negative dilatation,reverse positive dilatation and shear elasticity,are explored by the changes of effective stress path.

Specific features of transmission of an elastic shear wave through a finite acoustic thin-layer superlattice of the magnet-ideal

An essential highlight of the presented method is the employment of Magnetic Resonance Elastography (MRE) for local measurements of the attenuation of elastic shear waves introduced into a biological sample.

The results show that the critical pre-twist strain angle is 0.027 rad and the maximum elastic shear stress after pre-twist is 1 694 MPa for the torsional axis.

The experimentally observed large changes of the elastic shear moduli due to interstitials in Al suggest similar large changes of the phonon dispersion curves.

According to the results of cyclic triaxial tests, a linear correlation is presented between liquefaction resistance and elastic shear modulus, which shows the relation of Gmax (kPa) with (σd/2)1/2(kPa)1/2.

A general non-homogeneous shear beam model is developed to account for any possible situation such as variat ions of soil density and shear modulus with depth and irregular cross-section of embankments. Closed-form analytical expressions are derived for natural frequencies, modal displacements, participation factors and others for all cases. In this approach, the average shear modulus across the width of embankments is expressed as a sectional power function of depth. Numerical results are presented in a graphical...

A general non-homogeneous shear beam model is developed to account for any possible situation such as variat ions of soil density and shear modulus with depth and irregular cross-section of embankments. Closed-form analytical expressions are derived for natural frequencies, modal displacements, participation factors and others for all cases. In this approach, the average shear modulus across the width of embankments is expressed as a sectional power function of depth. Numerical results are presented in a graphical form through a set of non-dimensional parameters. The effects of several factors associated with non- homogeneities both in material properties and in geometric shape on vibration characteristics of layered embankments are discussed. Some conclusions drawn here may be of pratical significance.

A new method about determining shearing stress—fringe values of photo—elastic composite materials by pure shearing test is devoloped in this paper.The shearing stress—fringle values of photo—orthotropic—elasticity can be determined in the condition of that there are two photo—orthotropic—elastic composite material straight—beam samples with the rectangular section,for which have 0° and 90° fibers direction respectively,and being loaded in a man- ner of antisymmetry separately in order to make a pure shear state.The...

A new method about determining shearing stress—fringe values of photo—elastic composite materials by pure shearing test is devoloped in this paper.The shearing stress—fringle values of photo—orthotropic—elasticity can be determined in the condition of that there are two photo—orthotropic—elastic composite material straight—beam samples with the rectangular section,for which have 0° and 90° fibers direction respectively,and being loaded in a man- ner of antisymmetry separately in order to make a pure shear state.The results measured by the method presented here are in accordance with the values determined by tension test on the three straight samples,and the correctness of the new method to measure is also stated theoretically

A numerical technique is given for obtaining the solution for the propagation of torsional waves in an elastic/viscoplastic cylinder subjected to a dynamically applied shear stress with non-linear radial variation at its end surface. The equations governing the dynamic torsional deformation of the cylinder are solved by means of the method of numerical integration along bicharacteristics. The numerical solutions for the torsional elastic waves in the cylinder are shown to be in close agreement with the existing...

A numerical technique is given for obtaining the solution for the propagation of torsional waves in an elastic/viscoplastic cylinder subjected to a dynamically applied shear stress with non-linear radial variation at its end surface. The equations governing the dynamic torsional deformation of the cylinder are solved by means of the method of numerical integration along bicharacteristics. The numerical solutions for the torsional elastic waves in the cylinder are shown to be in close agreement with the existing exact solutions. The stability and convergence of the present technique are investigated by examining the error in the total energy of the numerical solution as time increases. The advantages and limitations of the present technique are discussed.