考虑柔性缓冲的工程车辆防侧翻仿真与优化设计  

Simulation and optimization of anti-rollover design for engineering vehicles considering flexible cushioning

作　　者：姚志胜 朱文峰[1] YAO Zhisheng;ZHU Wenfeng(School of Mechanical and Energy Engineering,Tongji University,Shanghai 201800,China)

机构地区：[1]同济大学机械与能源工程学院,上海201800

出　　处：《农业装备与车辆工程》2025年第2期37-43,共7页Agricultural Equipment & Vehicle Engineering

摘　　要：工程车辆工作环境复杂,容易发生翻车或坠物事故,为保障驾驶员安全,需安装翻车和落物保护装置。以某平地机驾驶室为研究对象,建立驾驶室翻车和落物仿真模型,采用非线性有限元分析方法对驾驶室在横向、垂向、纵向以及落物工况下的结构强度进行分析,并对驾驶室与车架连接处的柔性缓冲结构做进一步的模拟优化,获得对应的结构变形和能量吸收的结果。仿真与试验结果表明:驾驶室变形后没有侵入DLV区域,符合国际标准要求,考虑柔性缓冲后的仿真结果,在横向与纵向工况上与试验结果的数据误差由25%降低到15%以内,更加准确地反映了驾驶室的承载能力。The working environment of engineering vehicles is complicated,and rollover or falling object accidents are easy to happen.In order to ensure the safety of drivers,rollover and falling object protection devices need to be installed.Taking the cab of a certain grader as the research object,a simulation model of cab overturning and falling objects was established.Nonlinear finite element analysis method was used to analyze the structural strength of the cab under lateral,vertical,longitudinal and falling object conditions.The flexible buffer structure at the connection between the cab and the frame was further simulated and optimized to obtain the corresponding structural deformation and energy absorption results.The simulation and test results showed that the cab did not invaded the DLV area after deformation,which met the requirements of international standards.The data error between the simulation results and the test results in transverse and longitudinal conditions was reduced from 25%to less than 15%after considering the flexible buffer,which more accurately reflected the bearing capacity of the cab.

关 键 词：工程车辆 柔性缓冲 防侧翻 防落物 非线性有限元分析 

分 类 号：TJ812.2[兵器科学与技术—武器系统与运用工程] U463.33[机械工程—车辆工程]