Analysis of dynamic response of thin-walled structure subjected to thermal-acoustic loading

摘要

The primary goal of this research is to investigate snap-through response characteristics ofthermal buckled Aluminum thin panel exposed to intense acoustic loading. The FEMmodel is employed to obtain structure displacement time history, probability distributionfunction and probability spectrum density post buckled. Two different cases is consideredto evaluate the effect of random excitation loading and steady loading on structurenonlinear response, one case is same sound pressure (SPL) level while temperature isdifferent, the other is same temperature while SPL is different. The results show thatstructure stiffness depends on the contribution of thermal- acoustic on geometrynonlinearity, which causes the complex structure response.