Strength analysis and improvement for frame of heavy dump truck

HAO Ming-gang, WANG Tie, CHEN Zhi, CHU Yu-feng, LIU Lun-lun, YAO Peng-hua

(Department of Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Abstract: Aiming at the problem of the design of TY dump truck frame whether it is reasonable, the finite element analysis method was applied to the frame strength analysis. Firstly, the frame model was simplified reasonably, and the finite element model of a frame structure was established based on Hypermesh. The case of the stress of the frame was analyzed in bending, torsion and lifting condition. The improvement design of frame structure was put forword to solve the problem of stress distribution uneven phenomenon in fourth beam area. The fourth beam and its connecting plate were heightened corresponding, and the bolt holes were redistributed. The strength of the improved scheme was checked. The results indicate that, the maximum stress of frame reduces by 71.8 MPa in lifting instant, the maximum stress of frame reduces by 55.2 MPa in condition of lifting 45°,and the maximum stress also reduces differently under bending and twisting condition. The stress concentration is avoided, which illustrates the improved scheme is effective and provides a reference for follow-up frame structure improvement.