摘要
求解大型结构动态响应的特征模态时 ,用传统的特征值解法很难完成 ,因此有必要寻求一种加速解法。本文给出了求解大型结构特征值问题的加速子空间迭代法 ,它采用Gram Schmidt正交化过程消除收敛的特征向量 ,使得计算时间大大减少。文中通过实例对此法进行了验证。
In solving the dynamic response of a large-size structure,when a great number of eigenmodes is required to solve,the traditional eigenvalue solutions become usually expensive and impractical,therefore,it is necessary to seek an accelerated solution for such eigenvalue problem.In this paper,an accelerated subspace iteration for large eigenproblems is presented.It eliminates any converged eigenvector from further subspace iteration cycles by using the Gram-Schmidt orthogonalization procedure.The proposed method is verified by an example.Numerical computation results show that the mehod is very efficient and reduces calculation time.
出处
《船舶工程》
CSCD
北大核心
2002年第3期30-32,共3页
Ship Engineering
