推导出了对称二次特征值问题灵敏度的一种新算法,给出了二次特征对的导数.算法只需要已知系统的部分模态,比较适合大型复杂动力系统.数值结果表明该算法是有效的.
A new sensitivity algorithm is presented for computing the derivatives of repeated eigenvalues and the corresponding eigenvectors of quadratic eigenvalue problem. The algorithm is more suitable for large complex structural dynamic systems because it needs only partiol modal. Numarilal results show that the algorithm is effective.