解放J6F电动轻卡车架的轻量化分析

The lightweight analysis on the Jiefang J6F electric light truck frame

以J6F电动轻卡车架为研究对象,利用Pro/E软件建立原车架的三维模型,提出了3种车架轻量化方案:一是将原车架更换为密度更低的铝镁合金,二是横梁、纵梁都添加减孔重,三是将纵梁更换为铝镁合金,横梁添加减重孔。在满载工况下对轻量化后的车架进行静力分析,经分析对比确立方案三为最优方案。对方案三进行模态分析,同时与理论计算值进行比对,验证了有限元分析的准确性。最后对方案三进行疲劳分析,结果表明车架减重25%,同时满足强度、模态、疲劳的设计要求。

Taking J6F electric light truck frame as the research object,it establishes the 3D model of the original frame in Pro/E,and proposes three methods to reduce quality.It uses a lower density aluminum-magnesium alloy material to replace the original frame,adds the beam and stringer with weight reduction holes,replaces the stringer with aluminum-magnesium alloy and adds the beam with weight reduction holes.It analyzes static simulation for the lightweight frame under full load conditions,and builds the third model for the optimal solution.It realizes modal analysis for the third option,obtains the theoretical calculations to verify the validity of the finite element analysis,The fatigue analysis shows that the frame weight loss is 25%,and the design requirements of strength,mode and fatigue are met.