文献类型：期刊文献

英文题名：Fast and Exact Algorithm for Structural Static Reanalysis Based on Flexibility Disassembly Perturbation

作者：Yang, Q. W.[1]

机构：[1]Shaoxing Univ, Dept Civil Engn, Shaoxing 312000, Peoples R China

年份：2019

卷号：57

期号：8

起止页码：3599

外文期刊名：AIAA JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000478601500042)、、EI(收录号：20193307299779)、Scopus(收录号：2-s2.0-85070356225)、WOS

基金：This work was supported by the National Natural Science Foundation of China (11202138).

语种：英文

外文关键词：Aerospace engineering

外文摘要：Fast static reanalysis techniques are very important tools often used in structural optimization design. Generally, the existing exact methods for static reanalysis are only suitable for low-rank modifications. To combat this drawback, this paper presents a new exact method for structural static reanalysis based on flexibility disassembly perturbation. The proposed method is both exact and computationally efficient, and can be applied to many types of modifications in design, including low-rank modification, high-rank modification, small modification, and large modification. The effectiveness of the presented method is demonstrated using three truss structures. It has been shown that the results obtained by the proposed reanalysis method are the same as those obtained by the complete analysis. Compared with the existing exact methods, the proposed reanalysis method has obvious advantages in solving the high-rank large modification problem.