TY -的A2 -塞拉,罗杰·陈盟——Xiulong AU - Li Yuewen PY - 2019 DA - 2019/09/22 TI -空间并联机构的动力学分析不规则的球形关节间隙SP - 6242971六世- 2019 AB -间隙引起的加工精度和装配需求规律,但他们将不规则的穿运动对。目前,很少有研究空间穿运动对。为了掌握不规则的球形关节间隙的影响后的动态响应,方法求解不规则的间隙问题提出了基于牛顿-欧拉方法,和4-UPS-UPU空间并联机构的动态响应与不规则的球形关节间隙是调查。运动学模型和接触力模型的球形接头的间隙。机制的动态模型与球形关节间隙由牛顿-欧拉方法建立了。基于Archard模型,三维动态磨损模型的球形关节间隙。球形接头的磨损深度和磨损的位置得到的数值解。穿后重建几何形态学的方法提出了基于有限元思想。不规则的间隙问题的解决,提出磨损后的动态响应机制也进行了分析。结果表明,动态响应曲线波动机制的理想曲线在穿之前或之后是否磨损。 Compared with the regular clearance before wear, the results of the irregular clearance after wear have a greater impact on acceleration and contact force, and the vibration of the acceleration and contact force curve become more intense than before. Moreover, the displacement, velocity, and acceleration curves of the irregular clearance show some hysteresis than that before wear. Therefore, it can be inferred that the irregular clearance has more adverse effects on the mechanism and aggravates the wear between the elements of the kinematic joint; in addition, the stability and the reliability of the mechanism can be reduced. SN - 1070-9622 UR - https://doi.org/10.1155/2019/6242971 DO - 10.1155/2019/6242971 JF - Shock and Vibration PB - Hindawi KW - ER -