基于DMAP的模态综合方法与应用

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在模态综合技术基础上,研究了子结构之间的柔性连接处理,提出了一种基于DMAP的模态综合实现方法,开发了一个具有模态综合求解功能的CAE系统,最后通过2个实例对所开发的系统进行了验证。结果表明,系统可以实现模态综合计算功能,能够精确地获得装配结构的低阶模态频率。 In this paper, the basic theory of mo- dal synthesis is introduced. The procedure of han- dling the flexible connection between substructures is studied. A realization method of modal synthesis based on DMAP is raised and a CAE system is de- veloped. At last, the system is verified with two ex- amples. The results show that the system can anal- ysis the lower order modal frequencies of the as- sembly structure accurately.