| The SX360 model dump truck is a kind of vehicle for field task designed and manufactured by Shaanxi Automobile Manufacture Assemble P1an. Because of disfigurement on design, fatigue cracks appear on the frame after working in scurviness condition within three to five months. In this paper, using the super FEM analysis software ALGOR FEAS, the reason for engendering fatigue crack of frame is studied deeply and the improved scheme is put forward.In this paper, frame FEM computation model taking plate as basic unit isestablished. Based on this model, firstly, static stress is analyzed and the stress distribution offrame under various static working condition is attained; secondly, modal analysis of frame iscarried out and natural frequency and modes of this frame is received; finally, randomvibration is analyzed and displacement and stress reaction stimulated by road surface isattained. In terms of the FEM computation results under practical working environment of frame ,the reason for frame fatigue crack appearing in the early stage is analyzed. The modification scheme to the frame that has appeared fatigue crack and hasn't appeared is putforward. At the same time,a kind of design idea to this frame is brought forward.The frame FEM analysis method and process of SX360 dump truck in this paper is appliedto the design and analysis of all kinds of frame. |
PDF Full Text Request