整机结构混合建模方法研究  

INESTIGATION OF HYBRID MODELING OF THE WHOLE STRUCTURE

作　　者：方英武[1] 吴德伟[1] 张广鹏[2] 吕延军[2] 

机构地区：[1]空军工程大学电讯工程学院,西安710077 [2]西安理工大学机械与精密仪器工程学院,西安710048

出　　处：《机械强度》2008年第5期864-869,共6页Journal of Mechanical Strength

基　　金：国家自然科学基金(50075069);大学博士启动专项科研基金(KDYBSJJ101)资助项目~~

摘　　要：提出基于动力边界元的混合建模方法研究整机结构的动态特性。通过对整机结构混合建模过程分析和结合条件的处理,采用动静态基本解,将结合部特性通过域内项合理地引入整机结构中,直接推导出整机结构边界动力学方程,高效地建立起相应的动力学模型。通过给出的算例和相应的动力学实验,结果表明文中的建模解析方法具有较好的精度和效率,在满足一定精度的要求下可以实现高效的计算。A hybrid modeling method was established to analyze dynamic behaviors of the whole structure by dynamic boundary element method. Based on dynamic and static fundamental solutions, joints characteristics are conveniently introduced to the whole struc- ture by interior items of domain. Dynamic boundary equations of the whole structure are deduced directly, and the corresponding dynamic model is gotten. Numerical calculating and dynamic experiments show that the established method improves modeling precision and efficiency of the whole structure, saves computing efforts, and it can realize high efficient calculation under satisfy some accuracv.

关 键 词：动态特性 结合部 整机结构 混合建模 

分 类 号：O342[理学—固体力学]