The Finite Element Analysis And Experimental Research And Structure Optimization Of Agricultural Vehicles Frame

Domestic agricultural vehicles technical levels have been behind the Japanese，German， and other countries， with the development of economy in agricultural vehiclesall sorts of use performance requirements significant rise to stimulate the development ofthe agriculture industry. Frame is agricultural vehicle’s main support components， isdecided to agricultural vehicles of quality and reasonable structure important factors，directly influence the cost and reliability， the frame is welding technology， with morethan in forest road， often produce frame fracture is， on the one hand， the seriousoverloading， on the other hand the frame structure exists drawbacks， need to improve.This paper studies the Guangxi Qinzhou power shun machinery Co.， LTDproduction QJ series of agricultural vehicles and two cylinder four cylinder type. Twocylinder type completed the frame of the finite element analysis， and electricalmeasurement experiment and structure optimization， four cylinder type completed theelectrical measurement results section， and the specific work are as follows:1. frame, the finite element analysis. In this paper are widely used in automotiveindustry of Hyper Works software completed the frame of the finite element analysis.Frame of the three-dimensional entity model the manufacturer is offered， in to the modelis simplified,Hyper Mesh in the frame of the finite element model of finished building.Analysis mainly for pure bending and bending and twisting combination two conditions.According to the force of bending and twisting combination on displacement in differentposition，and further into four is working condition, it is respectively: left before bendingand twisting and bending and twisting, left right after bending and twisting and bendingand twisting right rear. In addition, the frame of modal analysis, it is concluded that theframe in the first ten order modes.2. electrical measurement experiment. Electrical measurement experiment includingstudy，grinding，chipping，wiring and loading test and so on four aspects. Among themis choosing in finite element analysis and practical use of the basis of feedback. Although，by the objective conditions and individual ability constraints, but the experiment of theoverall effect is better, got their approval.3. frame structure optimization. The stress of the frame has certain symmetry, andmaximum deformation distribution in the longitudinal，thereforeto offset as as optimizedobject, the increase of optimization method to strengthen the box. ANSYS powerfuloptimization module (Design OPT) to strengthen the position of the box， length, thickness of the three parameters are optimized. After optimization of longitudinal force ofthe bad got more obvious improvement.