基于传声损失的复合材料结构优化研究

Structural Optimization of Composite Material Based on Sound Transmission Loss

基于复合材料一阶剪切理论———Mindlin理论的板理论和Rayleigh表面积分方程,对嵌在无限障板上的复合材料层合板声传递问题进行分析.在此基础上,建立复合材料的结构传声损失优化设计模型.最后,基于传声损失理论,应用遗传算法进行对称型复合材料板结构的铺层几何优化分析.算例验证了优化方法的有效性.

Based on the Mindlin first order shear effect plate theory and Rayleigh integral function,the sound transmission of laminated composite plates on an infinite baffle is investigated herein.The sound transmission loss optimization model of composite structure was established.Finally,with the sound transmission loss theory,the stacking sequence problem of symmetric composite laminate optimization is conducted.By introducing genetic algorithm（GA）,the optimization problem is solved.The numerical example shows the effectiveness of the calculating ways.