Static Analysis of the Sub-Frame Based on Precision Load

Abstract

In this paper, strength analysis of the sub-frame of a heavy-duty dump truck was done based on ADAMS and ANSYS. A prototype model of dump system of dump truck was built basis of drawings and technical documents. The prototype model of dump system was imported into ADAMS, then driving and kinematic pair were created to form a complete prototype system. Force curve and force value of each key point in the sub-frame was obtained under unloaded condition by simulation of unloading operation. The results showed that the strength and stiffness of the sub-frame under pure bending condition and the initial stage of unloaded condition meet the requirements;In critical slipped stage of cargo, the maximum stress of the rear rotating shaft of sub-frame is greater than the yield limit of the materials, and its position is consistent with fault location in the practical application.