基于主振系的传递函数对垂直冲击消振系统的时域响应进行理论推导；
Response of impact damping system in time domain was reduced on the base of vibrating system′s transfer function.
建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。
Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established.
在第4章中先对甲板吊臂架结构进行模态分析，确定结构的固有频率和相应的主振型。
In chapter 4, in order to ascertain its inherent eigenvalue and corresponding main vibration, modal analysis is first implemented for the jib structure of deck crane.
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