ANSYS零转弯半径割草机翻滚保护装置设计
毕业论文关键词：非线性有限元分析；割草机；翻滚保护装置；农用车辆
Abstract Roll-over protection device is a passive protection device installed in the project vehicle outside the cab, its performance is directly related to the life and safety of the driver after the accident. In recent years, more and more application of finite element technology in vehicle design. Used to simulate agricultural vehicles under static load concentrated in the lateral rollover protection device (RolloverProtectiveStructure (ROPS)) nonlinear response study more, however, to withstand the deformation of the ROPS under the uniform load in the horizontal continuous rolling process of agricultural vehicles and energy absorption regular work less. To KubotaZD28 zero turning radius mower for its work on the slope caused by the continuous rolling working conditions, finite element model of the ROPS and mower with Pro/Engineer software, using the finite element nonlinear analysis ROPS strength analysis, to predict when the vehicle is a continuous roll the ROPS component of stress, deformation and energy absorption and to predict the deformed ROPS whether invasive pilot shelter space. Validated according to international standards on the performance of ROPS, the results show that the nonlinear finite element numerical simulation of the collision of the vehicle ROPS is an effective way to meet international standards, its energy absorption, it can ROPS strength at the design stage forecast, to prove the correctness of the finite element analysis. The result of this paper provide a basis for the design of the mount mower and other garden vehicle roll-over protective structures, and have great significance for improving the job security of engineering vehicles.
Keywords: finiteelement analysis; mower; rops; agricultureal vehicles
目录
第一章 绪论 . 1
1.1 选题背景与意义 1
1.2 翻滚保护装置介绍 2
1.3 国内外研究概况 2
1.4 存在的不足 4
1.5本文的研究方法和主要内容 . 5
第二章 弹塑性力学的基本理论 . 6
2.1 弹塑性力学的基本概念 6
2.2 弹塑性力学的基本假设 6
2.3 弹塑性力学中常用的简化力学模型 7
第三章 割草机有限元模型的建立 9