Modal Analysis of Marine Compound NC Machine Combined with Guide-slider Viscous Damping
SUN Ye-wang1, 2, ZHANG Zhi-jing1, JIN Xin1, ZHANG Jia-ying2, XU Bin-shi2, DENG Yong-jun1
1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; 2. National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China
Abstract：To study the dynamic characteristics of marine NC compound machine, the machine motion coordinate and layout scheme were analyzed based on the analysis of the ship sway characteristics under wave loads, and the 5-DOF load of the machine key guide-slider motion was studied. Then, the guide-slider viscous damping vibration model and its finite element method (FEM) machine model were created based on machine vibration theory, and the machine hammering experimental modal method and FEM modal method were used to study the machine modal. The results show that the guide-slider vibration model and the FEM machine model are correct, and there are 6 modal shapes of the machine within 110Hz.
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