The Lightweight Design Of Heavy Truck Frame

Along with the rapid development of economy, the special automobile market inthe basic construction process continues to expand, the lack of resources, energyconsumption and emission reduction problem has increasingly drawn attention of thegovernment and the enterprises, the resources of consumption has become thegovernment and the enterprise’s main work and responsibility, the increasing of steelprices and the labor costs make the enterprise consider must reduce the productioncost, in order to ensure the profit space for the company. Currently most productionenterprise more acceptable way is to lightweight of the existing products.This thesis firstly introduces the enterprise existing double-layer structure ofthe frame, the research of market situation and frame itself is more heavy than otherproduction,then use the finite element analysis method to analysis the static strengthof the double-layer frame, the calculation results and actual market overload situationindicates the original frame strength is rich, it is necessary to improve the design.In view of the enterprise’s own production process, the enterprise look forward todirectly modify the original double-layer longitudinal to a single layer, and draw outthe single frame light weight plan. In order to validate the single frame meet therequirements of the design or not, this thesis not only chose the same workingconditions for single frame static strength calculation; Also chose two workingconditions to calculate the stiffness of the frame. According to the static strength,stiffness calculation results, this single frame full load stress value of load were lessthan the strength of the material, is also to meet the limit value frame designrequirements, according to the basic theory of optimal design, the design scheme ofthe single frame, there is still a optimization space.Finally the thesis use the Optistruct software to optimize the single frame designs, according to the actual material specifications and data requirements, determinedthe thickness of the bean, then vertify the strength and the stiffness of theoptimization design, the thesis use the two different methods, meet the enterpriselightweight requirements.