The test modal analysis is an effective means to identify the intrinsic attribute of a mechanical structure.
试验模态分析是识别机械结构系统固有特性的一种常用、有效的现代技术。
Modal mechanical impedance synthesis analysis (MMISA) is a new subsystem vibration analysis method and a new approach based on traditional mechanical impedance synthesis analysis.
模态机械阻抗综合法是一种新的动态子结构振动分析方法，是传统机械阻抗综合法的推广。
Modal parameters extraction of the mechanical structure is the basis for the mechanical structure dynamic analysis.
机械结构模态参数的提取是机械结构动力学分析的基础。
The software of machine tool structure Modal Analysis and Optimal Design (MAOD) can be applied to the analysis and optimization of dynamic mechanical characteristics on a microcomputer.
机床结构模态分析与优化设计软件MAOD使机床结构动态特性的分析及其优化可以在微型机上完成。
The results show that the equiaxed and bi-modal microstructures have the similar mechanical properties and fatigue crack propagation rate.
结果表明：该合金等轴组织和双态组织的室温力学性能和疲劳裂纹扩展阻抗差别不大；
Using the modal analysis method in this paper, the vibration characteristics of ZJ50J double-lifting mechanical driven oil drilling rig (patent No. 352466) is studied.
应用模态分析技术、振型截断法，对专利证书号第352466号的ZJ50 J双升式机械驱动石油钻机振动特性进行研究。
Dynamic mechanical characteristics of 3d woven composite beams are studied by means of the software of ANSYS and the experimental modal analysis technique.
采用有限元分析软件ANSYS分析了三维机织复合材料悬臂板的动态力学性能，预测了其固有频率和振型。
Dynamic mechanical characteristics of 3d woven composite beams are studied by means of the software of ANSYS and the experimental modal analysis technique.
采用有限元分析软件ANSYS分析了三维机织复合材料悬臂板的动态力学性能，预测了其固有频率和振型。
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