The results show that the equivalent error rate depends on the relative hardening stiffness coefficient η; the prediction precision of the linear equivalent model declines but that of the cubic restoring force equivalent mo.

But common MR damper can t be used in cases of high-frequency vibrations because of stiffness hardening,which leads to increase of displacement transmissibility at high frequencies.

Analysis on relative stiffness of pipeline soil for buried pipelines;

Effect of cross-frame's relative stiffness on shipboard crashworthiness

The influence of the curing processes on composites′ glass transition temperature(Tg) and relative stiffness(E′) were investigated using dynamic mechanical analyze(DMA).

Experimental research on relative rigidity of pile-cap;

The parametric analysis of relative rigidity of the arches and beams of the three bridges is made and the influences of the rigidity on the mechanical behavior of the overall bridge structures are studied as well.

∶ Based on investigation into four aspects of qualitative mechanical analysis, principle model experiments, engineering dynamic load tests and numerical calculation, it was discussed that the transfer of stresses and accelerations in stratum medium have a close relation with its relative rigidity.