【摘要】 用混合数值法分析复合材料层合板结构的瞬态响应时,在波数域中引入减基法、构造减基空间,把原大型特征值问题映射到减基空间进行降阶,在保证精度的前提下快速近似求解原大型特征值问题,从而快速得到结构的时域响应.算例表明,引入减基法后的混合数值法能更有效地解决结构瞬态响应问题.该方法可以推广用于快速解决大型结构动力优化设计和结构动力反问题等结构动力分析问题.更多还原

【Abstract】 In this paper,the combination of hybrid numerical method(HNM)and reduced-basis method (RBM)is suggested to more effectively analyze the transient displacement response in composite laminated plates.The large eigenvalue problem in wavenumber domain is projected onto a reduced basis space constructed by the truncated eigenvectors from the sample set.The numerical examples demonstrate the efficiency and accuracy of the presented method,which also can be extended to effectively solve other structural dynamic problems.更多还原