Vibration and acoustic responses of composite and sandwich panels under thermal environment

Vibro-acoustic analysis of functionally graded graphene-reinforced nanocomposite laminated plates under thermal-mechanical loads

Buckling and vibro-acoustic response of the clamped composite laminated plate in thermal environment

Sound radiation of functionally graded materials plates in thermal environment

Vibration and sound radiation analysis of temperature-dependent porous functionally graded material plates with general boundary conditions

Experiments were performed to investigate the vibration and acoustic response characteristics of a clamped rectangular aluminum plate in thermal environments. Modal tests were carried out to study the influence of thermal environment on natural vibration. With the increment of structural temperature, natural frequencies of the plate decrease obviously. Mode shape interchange was observed for the modes with frequencies very close to each other. The thermally induced softening effect has unequal influences on the plate along the two in-plane directions. Numerical methods were also employed to study the experimental phenomena. Calculated results indicated that the initial deflection has a great influence on the natural vibration of the heated plate. Even a slight curvature can reduce the thermally induced softening effect obviously. Dynamic response tests were carried out under acoustic and mechanical excitations, and the measured results indicate that the variation in damping determines the response amplitudes at resonant peaks in the test.

Huan Li

Papers

Dynamic and acoustic response of a clamped rectangular plate in thermal environments: experiment and numerical simulation.