基于ADAMS的动力减振镗杆径向跳动频域分析及参数优化

采用内置式动力减振的结构来增加镗杆的动刚度,并根据内置式动力减振镗杆的结构及振动特点,利用ADAMS和ANSYS软件联合建立了减振系统的多柔体动力学模型.在此基础上,分析了模型中的弹簧刚度系数和粘性阻尼系数对刀刃径向跳动量的影响.虚拟仿真结果验证了初始设计的可行性,确立了在物理样机设计中需要考虑的要点.同时以减小刀刃径向跳动量在整个频域内响应的最大值为目标对动力减振镗杆虚拟样机进行仿真优化分析,得出了减振系统的最优参数.仿真试验表明:系统的频域响应得到了改善.为进一步的减振系统结构优化设计提供了设计依据.

Radial Vibration Analysis and Parameter Optimization of Dynamical Vibration Absorption Boring Bar by Using ADAMS

A boring bar with dynamical vibration absorption system in it to increase the stiffness of the boring bar was adopted. According to structural and vibrational characteristics,multi flexible body dynamical model of the vibration absorption system was built up by using the software of ADAMS and ANSYS. Based on this model,the influence of the spring stiffness coefficient and damping coefficient on vibrational value of the knife edge was discussed. The virtual simulation results verified the feasibility of the initial structure design and established the design key points in the physical prototype. Aiming at reducing the radial vibrational value of the edge of knife in the boring processing,the virtual prototype of vibration absorption boring bar was simulated,optimized and analyzed,and optimized parameter was obtained finally. The simulation results show that the system responses in the frequency domain have improved. Further design considerations about optimization design of the boring bar were given.