小型集材挂车满载工况下的有限元建模与分析  

Finite Element Modeling and Analysis of a Small Logging Trailer under Full Load Conditions

作　　者：韩东涛 马跃威[2,3] 刘晋浩 崔小青[2] HAN Dongtao;MA Yuewei;LIU Jinhao;CUI Xiaoqing(Hulunbuir College,Hulunbuir 021008,China;School of Technology,Beijing Forestry University,Beijing 100083,China;Key Laboratory of Forestry Equipment and Automation of State Forestry and Grassland Bureau,Beijing 100083,China)

机构地区：[1]呼伦贝尔学院,内蒙古呼伦贝尔021000 [2]北京林业大学工学院,北京100083 [3]国家林业和草原局林业装备与自动化重点实验室,北京100083

出　　处：《森林工程》2024年第3期170-177,共8页Forest Engineering

基　　金：2020年内蒙古自治区高等学校科学研究项目(NJZY20309);2021年呼伦贝尔学院重点项目(2021FDZD04)。

摘　　要：小型集材挂车于林间作业存在多种工况,包括满载弯曲、满载扭转、紧急制动和急速转弯。为解决挂车在满载工况下车载系统的可靠性与安全性较差的问题,建立小型集材挂车的三维装配模型,进行静态分析。通过有限元分析,研究挂车在4种典型工况下的结构变形和应力分布。研究表明,满载弯曲工况下,最大位移为4.5177 mm,最大应力为115.19 MPa,安全系数为3.08;满载扭转工况下,最大位移为0.98448 mm,最大应力为71.929 MPa,安全系数为4.935;满载制动工况下,最大位移为4.9946 mm,最大应力为120.05 MPa,安全系数为2.957;紧急转弯工况下,最大位移为4.3658 mm,最大应力为104.64 MPa,安全系数为3.39。结果显示研究设计的小型集材挂车在林间作业时满载工况下稳定性较强,确保木材的可靠采集和运输。基于该结果可进一步优化挂车设计和性能,以适应不断变化的需求和环境要求。Trailers need to operate under various conditions,including full load bending,full load twisting,emergency braking,and sharp turns.In order to solve the problem of poor reliability and safety of the on-board system of the trailer under full load condition,a three-dimensional assembly model of a small logging trailer was established,and static analysis was performed.Through finite element analysis,we studied the structural deformations and stress distributions of the trailer under four typical working conditions.Under full load bending conditions,the maximum displacement was 4.5177 mm,the maximum stress was 115.19 MPa,and the safety factor was 3.08.Under full load twisting conditions,the maximum displacement was 0.98448 mm,the maximum stress was 71.929 MPa,and the safety factor was 4.935.Under full load braking conditions,the maximum displacement was 4.9946 mm,the maximum stress was 120.05 MPa,and the safety factor was 2.957.Under emergency turning conditions,the maximum displacement was 4.3658 mm,the maximum stress was 104.64 MPa,and the safety factor was 3.39.Results showed that the small skidding trailer designed in this study had strong stability under full load working conditions in the forest,which ensured the reliable collection and transportation of wood.Future research can further optimize trailer design and performance to meet evolving needs and environmental requirements.

关 键 词：小型集材挂车 ANSYS仿真 集材工况 林木集材 结构稳定性分析 材料力学 

分 类 号：S776.325[农业科学—森林工程]