Experimental investigation on the effect of the relative stiffness ratio between superstructure and ground soil on the fundamental frequency of soil-structure system;

The relationship between the fundamental frequency discount and the relative stiffness ratio was obtained by data fitting.

A parametric study on the relative stiffness ratio,the relative mass ratio between the megaframe and the substructures and the additional column ratio that influences the response controll effect of the MSCS under semi-active control is performed.

Bionic design of column structure of machine tool for high specific stiffness;

The application environment for remote sensor in space is described and the importance of selected material and its effect on design of the Three Mirror Anastigmat(TMA)remote sensor are introduced,the new materials SiC and SiC/Al with high-thermal conductivity and high specific stiffness are selected to design for a lighting TMA remote sensor.

Introducing the specific stiffness structural effectiveness, the simulation results of optimization show that the seat topology optimization structure based on density method can meet the naval gun\'s engineering needs, which can provide references for lightweight design of naval gun.

Analysis of the effect of stiffness ratio on dynamic characteristics of arch transfer floor;

It is found that the formation of the active earth pressure relies mainly on both the stiffness ratio k of the media and the homo.

The distribution of stress and displacement near the transition section are discussed for different stiffness ratios.