基于全尺寸试验的挖掘机具作用埋地输气管道的多体动力学仿真

发布时间：2018-05-11 12:13

  本文选题：埋地输气管道 + 挖掘机　； 参考：《工程力学》2017年S1期

【摘要】：液压反铲式挖掘机被认为是当前埋地输气管道最主要的第三方威胁之一。为确定挖掘机斗齿撞击管道的动载荷及动载系数,设计实施了管道全尺寸动静态挖掘试验,利用ADAMS软件建立管道-土壤-挖掘机相互作用的多体动力学模型,基于各油缸位移及压力测试数据实现挖掘过程的再现仿真,其中需设定多体动力学系统的材料属性、约束及摩擦、接触、驱动力等信息,最终获得不同工况的斗尖挖掘力,以及因挖机运动部件间摩擦引起的能量耗散,评估不同工况下挖掘机的能量耗散率。研究可为定量评估埋地输气管道遭受地面挖掘机械的冲击损伤提供可靠的载荷参考,且为沿线第三方干扰的灾害防控给予数据支撑。
[Abstract]:Hydraulic backhoe excavator is regarded as one of the most important third-party threats to buried gas pipeline. In order to determine the dynamic load and dynamic load coefficient of excavator bucket tooth impingement pipeline, the full-scale dynamic and static excavation test of pipeline is designed and implemented. The multi-body dynamic model of pipe-soil-excavator interaction is established by using ADAMS software. Based on the displacement and pressure test data of each cylinder, the simulation of mining process is realized, in which the information of material attribute, constraint and friction, contact and driving force of multi-body dynamics system are set up, and finally the excavating force of bucket tip under different working conditions is obtained. The energy dissipation caused by friction between the moving parts of the excavator is evaluated to evaluate the energy dissipation rate of the excavator under different working conditions. The study can provide a reliable load reference for the quantitative assessment of the impact damage of buried gas pipeline subjected to surface excavation machinery, and provide data support for the prevention and control of third party interference along the pipeline.
【作者单位】： 西南石油大学石油与天然气工程学院;四川大学建筑与环境学院;
【基金】：国家科技支撑计划项目(2011BAK06B01-11) 中国石油西气东输管道公司项目(XGSGL01423) 西南石油大学青年教师发展基金项目(201599010109)
【分类号】：TE973
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本文编号：1873895