High G Value Impact Of Lightweight Structure Cushioning To Study

In recent years, high g value collision phenomenon has become the important researchsubject in such fields as air, rail transportation, weapons and equipment. Missile accelerationtest device is working in a high g value environment, its internal records circuit is theimportant core components need to be buffer protected. This article will study three kinds ofstructure such as cylindrical shell, aluminum foam, aluminum foam filled shells, under thecondition of high g value impact, the buffering mechanism of lightweight objects (recordscircuit). First of all, the cylindrical shell, aluminum foam on the impact of energy theory areanalyzed, and then established the simplified finite element model of missile acceleration testdevice. By using the finite element software ANSYS/LS-DYNA get the simulation of thebuffer components absorbing energy, considering respectively the cylindrical shell wallthickness, the density of aluminum foam and the initial impact acceleration pulse width andamplitude variable on its buffering effect. At the same time,cylindrical shells under axialimpact modal are analyzed. The simulation results show that: Under this experimentalcondition, Shell wall thickness is smaller, the buffer effect is better; The smaller the density ofaluminum foam, the buffer effect is better; To Aluminum foam filled in the shell, shell wallthickness is smaller, density of aluminum foam is smaller, their buffer effect is better; To thesame buffer components under different acceleration, the pulse width and amplitude of theacceleration have a certain influence on buffer effect of buffer components. In the end, made asimulation of missile penetration process of steel and concrete. Using the best buffering effectcylindrical shell, aluminum foam, aluminum foam filled shells in front of simulation asmissile acceleration test device of buffer components. Analysised and campared the buffereffect of three kinds of buffer components in the process of projectile penetrat the same target board, The results show that the process of missile penetration in the same other conditions,The composite structure of aluminum foam filled shell buffer effect is superior to the singlealuminum foam and the single shell.