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Mechanical Property Analysis and Research on Driving Axle Housing of Light Truck

Author: WangJin
Tutor: FuJingShun
School: Shenyang University of Technology
Course: Vehicle Engineering
Keywords: Drive axle housing Finite Element Strength Stiffness Fatigue life
CLC: U463.218
Type: Master's thesis
Year: 2010
Downloads: 106
Quote: 0
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Abstract


The drive axle housing is the main load bearing member and force parts of the car , the car in the process of moving the drive axle housing under complex loads . Through uneven road when the car due to the impact load between the wheels and the ground , improper design or manufacturing process , will cause deformation and break the axle housing . In addition , the role of traction on the drive wheels and the lateral force is also transmitted through the axle housing to the frame or body of the vehicle . Therefore , the drive axle housing should have enough strength , stiffness and excellent dynamic characteristics . By alternating load , axle housing prone to fatigue failure . Fatigue damage is usually no obvious harbinger suddenly and cause a serious accident . Therefore , it is necessary to calculate the fatigue life of the axle housing . The LGV driving axle housing for the study, first create a finite element model of the drive axle housing . After the finite element model of the axle housing stiffness and strength analysis of typical operating conditions , distribution of axle housing in various conditions of stress and deformation . Axle housing of the mold -state analysis , the axle housing first 15 order free constrained state mode shapes and natural frequencies . The fatigue life analysis software on the axle housing to the vertical bending fatigue life of the working conditions of life of the danger zone and the region of the axle housing . The analysis results showed that : the axle housings meet the requirements of both strength and stiffness in the various operating conditions , but in the shaft head flange and the axle casing welding appears obvious stress concentration ; calculated by the lowest natural frequency is much larger than the excitation of the road frequency, the vehicle was the axle housing will not resonate ; meet the requirements of the dangerous parts of the fatigue life of the axle housing . Finally , based on the finite element analysis results on the axle housing structure improvements , improved rear axle housing values ??reduce stress in various operating conditions , the fatigue life of the dangerous parts of the axle housing also increased significantly eased the stress concentration .

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Transmission > Mechanical transmission > Drive axle
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