自由结构动力优化设计中的特征灵敏度分析  

EIGENSENSITIVITY ANALYSIS IN STRUCTURAL DYNAMIC OPTIMUM DESIGN FOR FREE STRUCTURES

作　　者：瞿祖清[1] 傅志方[1] 

机构地区：[1]上海交通大学

出　　处：《中国造船》1997年第4期69-73,共5页Shipbuilding of China

摘　　要：在结构动力优化设计中，特征灵敏度分析是一个十分重要的环节。如何在保证精度的前提下减少分析工作量具有重要意义。本文运用幂级数展开法．给上了诸如潜艇、鱼雷等自由结构特征灵敏度分析方法。该方法计算精度高，且精度可根据要求进行调整。最后，通过对一自由一自由梁计算表明该方法是有效的。The analysis of eigenvalue and eigenvector sensitivities with respect to design parame ters is very important in the structural dynamic design. It is quite meaningful to reduce calculation work within a given accuracy. In this paper, a new method is derived for the analysis of a class of free structures such as submarine and torpedo by using power series expansion. This method has high accuracy and the accuracy can be adjusted according to requirement. A numerical example of a free-free beam with two rigid modes is given to il lustrate the effectiveness of the pressent method.

关 键 词：结构动力 设计 特征灵敏度 潜艇 鱼雷 

分 类 号：U674.76[交通运输工程—船舶及航道工程]