基于油管柔性体的上卸扣仿真模型与分析

Based on the Flexible Tubing on the Shackle of Simulation Modeland the Analysis

油管上卸扣过程中油管与油管钳相互作用力学行为是十分复杂,由于油管钳头与油管壁接触状态的物理试验很难模拟,文章以油管钳卡紧部件的刚体运动学和动力学模型,油管柔性体力学模型为基础,建立起油管钳-油管上卸扣系统刚柔耦舍仿真模型。通过对模型的仿真试验,找到油管钳上扣的临界咬入深度,既能保证油管与油管钳之间无相对滑动,又能保证油管钳咬入深度最小。通过咬入深度与接触力的关系曲线找到此时钳牙对油管的临界接触力,为以后研究和设计油管钳提供理论基础和数据参考。

In the process of screwing on the oil pipe, Interaction between the oil pipe and oil pipe wrench mechanical behavior is very complex. Due to the contact the head of oil wrench with the wall of the oil pipe is difficult to simulate the physical experiment, Based on the oil pipe wrench rigid body kinematics and dynamics model of clamping parts, flexible tubing slrength model, establish the oil pipe wrench-oil pipe shackle system on the coupled simulation model. Through the simulation test of the model, found the oil pipe wrench clasp the critical bit depth. It carl not only ensure there was no relative sliding between the oil pipe and oil pipe wrench, but also ensure the minimum depth of tubing tongs bite. By the relationship between the contact force and the biting depth to find the critical contact force, providing theoretical basis for later research and design of oil pipe wrench and data reference.