STRUCTURAL DYNAMIC ANALYSIS FOR LIFTING MECHANISM SUPPORT RACK OF MEDIUM DUMP TRUCK

Abstract

In this paper, the structural dynamic analysis for lifting mechanism support
rack of medium dump truck is performed by combined method of the multi-body
dynamic simulation (MBDS) and finite element analysis (FEA). The multi-body
dynamic model of lifting mechanism is built with the body of support rack could
be converted from the modal neutral file containing characteristics of finite
element model. The nodal stress-time histories of structure are determined using
finite element dynamic analysis with dynamic loads acting on support rack that
were obtained from the results of the MBDS. The analysis results show that:
strength requirement of support rack structure is met under the effect of
dynamic loads during operation with the safety factor, kb ≈ 2.1