基于等效有限元方法的液压挖掘机工作装置动力学及特性研究

邓艳宁; 李发宗; 王相兵; 程晓民

doi:10.13433/j.cnki.1003-8728.2016.0113

基于等效有限元方法的液压挖掘机工作装置动力学及特性研究

doi: 10.13433/j.cnki.1003-8728.2016.0113

1.
宁波工程学院机械学院, 宁波 315016;
2.
浙江大学能源工程学系, 杭州 310027

基金项目:

浙江省重大科技专项计划项目(2012C01012-3)资助

详细信息

作者简介:
邓艳宁(1977-),讲师,硕士,研究方向载运工具与运用工程,nbutdyn@gmail.com

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- 被引次数: 0
出版历程
- 收稿日期: 2014-03-01
- 刊出日期: 2016-01-05

Study on Dynamics for Working Device of Hydraulic Excavator Based on the Equivalent Finite Element Method

1.
Mechanics Institute, Ningbo University of Technology, Ningbo 315016, China;
2.
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China

摘要

摘要: 根据液压挖掘机工作装置机械臂运动和受力特点,对其进行动力学分析。采用基于集中质量和惯量的等效有限元法建立液压挖掘机机械臂的动力学微分方程,运用龙格-库塔(Runge-Kutta)数值求解法对运动微分方程进行推导和数值求解,对各臂杆的动力学特性进行了分析。采用动力学仿真软件ADAMS建立了液压挖掘机工作装置的虚拟样机模型,选取与数值求解相同工况的参数进行仿真分析。通过对比仿真结果和数值求解两种方法得到的动力学特性曲线,结果基本一致,表明机械臂动力学建模方法的正确性。
- 集中质量和惯量 /
- 等效有限元法 /
- 龙格-库塔数值求解 /
- 动力学特性 /
- 虚拟样机
Abstract: The dynamic characteristics is analyzed with the motion and force characteristics of a hydraulic excavator's working device's mechanical arm. The dynamic differential equations of the hydraulic excavator's mechanical arm are established with the equivalent finite element method based on concentrated mass and inertia. The derivation and numerical solution are conducted for the differential equations of motion with the Runge-Kutta numerical solution method. The dynamic characteristics are analyzed for each arm. The virtual prototype model of the hydraulic excavator's working device is established with the dynamics simulation software Adams. The simulation results are analyzed by selecting the same condition parameters with the numerical solution. By comparing the dynamic characteristic curve obtained with the simulation results and numerical solution, the results are basically consistent, which show that the dynamic modeling method of mechanical arm is correct.
- angular velocity /
- computer software /
- differential equations /
- dynamics /
- excavators

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参考文献(15)

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