个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
出生日期:1972-11-18
毕业院校:大连理工大学
学位:博士
所在单位:力学与航空航天学院
学科:工程力学. 计算力学. 动力学与控制
办公地点:综合实验1号楼513
联系方式:手机号码: 13942024929; 微信号码: 13942024929;
电子邮箱:zhaogz@dlut.edu.cn
Structural design optimization on thermally induced vibration
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论文类型:期刊论文
发表时间:2003-10-28
发表刊物:INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
收录刊物:Scopus、SCIE、EI
卷号:58
期号:8
页面范围:1187-1212
ISSN号:0029-5981
关键字:heat conduction; thermal vibration; sensitivity analysis; design optimization; precise time integration; thermal coupled structural system
摘要:The numerical method of design optimization for structural thermally induced vibration is originally studied in this paper and implemented in, the software JIFEX The direct and adjoint methods of sensitivity analysis for thermal-induced vibration coupled with both linear and non-linear transient heat conduction is firstly proposed. Based on the finite element method, the linear structural dynamics is treated simultaneously with linear and non-linear transient heat conduction. In the heat conduction, the non-linear factors include the radiation and temperature-dependent materials. The sensitivity analysis of transient linear and non-linear heat conduction is performed with the precise time integration method; and then, the sensitivity analysis of structural transient responses is performed by the Newmark method. Both the direct method and the adjoint method are employed to derive the sensitivity equations of thermal vibration. In the adjoint method, two adjoint vectors of structure and of heat conduction are used to derive the adjoint equations. The coupling effect of heat conduction on thermal vibration in the sensitivity analysis is particularly investigated. With the coupling sensitivity analysis, the optimization model is constructed and solved by the sequential linear programming or sequential quadratic programming algorithm. Numerical examples are given to validate the proposed methods and to demonstrate the importance of the coupled design optimization. Copyright (C) 2003 John Wiley Sons, Ltd.