CAJ | 학술논문

为确定挖掘机具接触埋地输气管道斗尖产生的载荷，分别对液压反铲挖掘机斗尖静载和冲击两种方式作用于输气管道的动静态响应进行了现场测试。基于动态测试数据，采用 ADAMS 多体动力学软件，结合 STEP 函数和Script 脚本仿真控制技术，将挖掘机动力传递过程转化为油缸的位移控制和速度控制，获得五齿和单齿接触输气管道极端工况下挖掘机斗尖动载荷时程曲线。最后将载荷时程曲线导入 ANSYS /LS -DYNA 商业有限元软件中，对管道的动态响应进行了有限元分析，其动态应变响应与现场测试数据吻合较好。试验与计算结果表明：所提出的基于试验和数值模拟相结合确定挖掘机具斗尖载荷的方法是可行的，研究结果可为埋地输气管道在挖掘机具作用导致的机械损伤定量评估提供准确可靠的载荷数据。
위학정알굴궤구접촉매지수기관도두첨산생적재하，분별대액압반산알굴궤두첨정재화충격량충방식작용우수기관도적동정태향응진행료현장측시。기우동태측시수거，채용 ADAMS 다체동역학연건，결합 STEP 함수화Script 각본방진공제기술，장알굴궤동력전체과정전화위유항적위이공제화속도공제，획득오치화단치접촉수기관도겁단공황하알굴궤두첨동재하시정곡선。최후장재하시정곡선도입 ANSYS /LS -DYNA 상업유한원연건중，대관도적동태향응진행료유한원분석，기동태응변향응여현장측시수거문합교호。시험여계산결과표명：소제출적기우시험화수치모의상결합학정알굴궤구두첨재하적방법시가행적，연구결과가위매지수기관도재알굴궤구작용도치적궤계손상정량평고제공준학가고적재하수거。
In order to determine the dynamic load of bucket tip of an excavator during contacting a buried gas pipeline,dynamic and static response tests were performed to reflect two action modes including static load and impact of a hydraulic backhoe excavator's bucket tip contacting the pipeline.Load time-history curves were simulated with ADAMS multi-body dynamics software according to the dynamic test data.STEP function and the script control technology were combined and used,the dynamic force transfer process of the excavator was converted into the displacement and speed control of cylinders,then the dynamic load time-history curves of the bucket tip of the extreme were obtained during the excavator contacting the pipe with five-tooth and one-tooth.Finally,the dynamic load time-history curves were induced into the finite element commercial software ANSYS /LS-DYNA,the dynamic response of the pipe was analyzed,the dynamic strain response of the pipe agreed well with field test results.The test and calculation results showed that the proposed method to determine the bucket tip load of a mining machinery based on the combination of test and numerical simulation is feasible,and the research can provide correct data for quantitative assessment of mechanical damage of a buried gas pipeline under mining machinery actions.