Mechanical properties and springrate ratio of ethylene propylene diene monomer vulcanizate;

According to the experimental results which were obtained by dilapidated dynamic test on four model deck beam girder from intact to destroyed, combined with the kinetic theory on bridge structures,the experiential formula between the ratio of static stiffness to dynamic stiffness (β) and the ratio of frequency (α) were founded by nonlinear regression method.

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.