%0 Journal Article
%T AN ACCURATE MODAL SUPERPOSITION METHOD FOR COMPUTING MODE SHAPE DERIVATIVES IN STRUCTURAL DYNAMICS<br>振型一阶导数的高精度截尾模态展开法
%A Chen Suhuan Liu Zhongsheng
%A Zhao Youqun
%A <br>陈塑寰
%A 刘中生
%A 赵又群
%J 力学学报
%D 1993
%I 
%X The modal superposition method is often used to obtain mode shape derivatives. However, it can not give an accurate solution and the errors may become significant, when more high-frequency modes are truncated. This paper deals with the contribution due to the unavailable high-frequency modes to mode shape derivatives, proves that it can be expressed by the available low-frequency modes and the system matrixes, and presents a numerical algorithm. Numerical examples show that the method is correct and can improve greatly the accuracy.
%K Modal design sensitivity
%K Modal truncation
%K Modal superposition method<br>模态截尾
%K 模态展开法
%K 振型导数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=9569590AFE6F492714C49C85FA93464B&yid=D418FDC97F7C2EBA&vid=C5154311167311FE&iid=E158A972A605785F&sid=CB3428B1EFB1C133&eid=E57FE519484CFB70&journal_id=0459-1879&journal_name=力学学报&referenced_num=13&reference_num=4