Abstract
Trucks are an important branch of the automotive field, and their market demand has been and will maintain a stable level for a long time. In this paper, a truck with a load capacity of 6t is selected as the research object. The frame of the truck is a side beam frame, which is riveted by two longitudinal beams and eight cross beams. The solid model of the truck frame is established by three-dimensional modeling software, and then the finite element software is used for static analysis of the frame, and the maximum deformation, the position of the maximum deformation, and the maximum Stress, maximum stress point. The analysis results show that the structural strength of the frame is far greater than the load-bearing strength, which meets the requirements of use, and there is a large space for lightening the structural materials. The structural optimization design of the frame is carried out, and the weight of the optimized frame is reduced by 8.4% under the premise of ensuring the strength requirements. The maximum stress under the full-load bending condition is reduced from 207.3MPa to 177.86MPa, achieving the lightweight goal.
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