Abstract：This article aims to the issues of the vertically and horizontally beams of bodies floor cracking and rupture of heavy dump truck by the ore impact. The FEA model of dump truck was established by taking plate as basic element by using the so-called HyperMesh software, the FEA model of ore was established according to the loading characteristics, the explicit dynamic finite element method was applied by using ANSYS / LS-DYNA as solver and the impact response of different quality ore falling from different heights to the bodies floor of dump truck was solved. The results of our analysis indicate that: the vertically and horizontally beams of bodies floor abnormal cracking and rupture is that the impact stress value of floor joints on vertical and horizontal beams is greater than the minimum tensile strength of the material, and this is consistent with the actual situation of cracking and rupture. When the thickness of bodies floor is 16mm and the quality of falling ore is heavier than 0.3t, the maximum stress value of cracking and rupture is greater than the yield strength (345 MPa) or minimum tensile strength (470 MPa) of the material. To avoid the phenomenon of vertically and horizontally beams of bodies floor abnormal cracking and rupture, we should limit the quality and falling height of the ore under the condition of the determined thickness of bodies floor.
朱龙龙;刘大维;王锋;程晓东. 矿石冲击下自卸汽车车箱底板纵横梁开裂和断裂原因分析[J]. , 2012, 31(1): 92-96.
ZHU Long-long;Liu Da-wei;Wang Feng;Cheng Xiao-dong . Cause analysis on vertically and horizontally beams of bodies floor cracking and rupture of dump truck by the ore impact
. , 2012, 31(1): 92-96.
2012, Vol. 31 
