柔性连杆机构冲击载荷动力学数值模拟  

Numerical Simulation of Dynamic Impact Load on Flexible Linkages

作　　者：岳士岗[1] 余跃庆[1] 白师贤[1] 

机构地区：[1]北京工业大学

出　　处：《机械科学与技术》1995年第1期1-4,33,共5页Mechanical Science and Technology for Aerospace Engineering

摘　　要：现代设计要求柔性连杆机构不仅在质量上要轻型化，而且性能上还要满足承受重载荷的要求。在高速运转的情况下，载荷的冲击而引起柔性连杆机构动力学特性的变化也应该加以研究，以为机构综合提供理论依据。本文对承受具有一定质量载荷冲击的柔性连杆机构动力学控制方程作了修正，使其能够较好地反映冲击载荷的动力学效果，并以此进行数值模拟。模拟结果表明，基频对冲击载荷较为敏感，冲击载荷质量与连杆中点动态响应呈反指数关系，这说明柔性连杆机构对于冲击载荷具有较好的稳定性。An ever-increasing demand has been placed on manufacturing for increasing productivity. This re-quires that machines not ody run fast,weigh light but also endure heavey load.Therefore,the dynamic ef-fects of impact load under high speed can' t be neglected,In this paper numerical simulation of dynamic im-pact load on flexible linkages is presented,It is found that only the fundamedtal natural frequency is sensi-tive to the impact load and there is an anti-exponential relation between impact load mass and the dynamicresponse of the midpoint of coupler.This proves that the flexible linkage mechanism can endure heavey loadimpect and still maitains stability.

关 键 词：柔性 连杆机构 冲击 数值模拟 载荷动力学 

分 类 号：TH112.1[机械工程—机械设计及理论]