Authors suggest a practical method based on dynamic analysis of finite element for modifying natural frequencies of hull grillage beam, and its software is completed.
提出一种基于有限元结构动力分析的船体板架固有频率实用修改方法，并进行了软件设计。
Considering characteristics of grotto relics the influence factors and dynamic finite element analysis methods on deformation stability grotto country rock are discussed.
针对石窟文物的特点，阐述了影响石窟围岩变形稳定性的主要因素和动力有限元分析方法。
Theoretical analysis is done on the static and dynamic characteristics of the structure, differential equations are presented, and it is also verified by the finite element method.
同时对机构进行了静态和动态特性理论分析，提出了机构静态和动态计算解析式，并用有限元方法对机构动态和静态特性进行了验证。
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