Structure Failure Analysis And Lightweight Of The Riveting Frame On Mine Dump Truck

As an off-road vehicle,the mining dump truck is mainly used in large construction sites such as mines,docks and infrastructure facilities.In recent years,with the development of a large number of infrastructure projects in our country,the mining dump truck entered a golden development period,and then ushered in more capital into this industry.Today,enterprises have mastered the basic mining dump truck manufacturing technology,industry competition changes to cost,economy,reliability,safety and so on.As an important load-bearing structure,the performance of the frame directly affects the performance of the vehicle.Therefore,the timely improvement of mining dump truck frame defects to improve its safety,speed up the optimization of the next generation products,has positive significance for improving the competitiveness of enterprisesThis paper aims at the actual situation on structural failure of a mining dump truck riveting frame in the actual application,analysis structural failure,repair,structural optimization design for the frame,based on the finite element method,topology optimization method,3D design software CATIA and finite element analysis software ANSYS.Specific work is as follows.Firstly,we focus on the key technology of the riveted frame finite element analysis.Secondly,the frame structure of finite element analysis in typical pure condition,summarize the results of the stress condition,failure analysis of composite structure conditions,through a combination of various conditions to determine the failure condition of three failures corresponding frame structure.Repair of the frame,and the repaired frame according to the failure condition check.Finally,topology optimization of the frame beam structure,according to the optimization results redesign of frame beams.Through the analysis of the pure working condition,the corresponding working condition of the rivet failure is found to be the reverse-braking condition,and the frame longitudinal beam is opened with the corresponding working condition as a turn-torsion case.In the frame repair,the invalid rivets are replaced by reaming bolts,and the safety coefficient is increased to 2.31.The stress of the frame is reduced 30.5% through adding the stiffening beam to the crack position of the longitudinal beam,which can meet the requirement of the strength of the frame already produced.The topology optimization of the crossbeam of the frame reduces the quality of the frame by 11.08%.The research shows that the CAE technology can quickly find the stress distribution of the frame,find the failure condition,repair for the specific failure position,recover the loss in time and improve the performance of the frame.The topology optimization method can break the traditional design concept and effectively reduce the frame quality under the precondition of meeting the requirement of strength.