Research on Fatigue Fracture Mechanism of Balanced Suspension Leaf Spring Seat of Engineering Vehicle
Journal Title: Automobile Technology & Material - Year 2024, Vol 39, Issue 2
Abstract
In order to address the issue of failure fracture of balance suspension leaf spring seat of engineering vehicle, this paper analyzed the balance suspension leaf spring seat by process analysis, fracture analysis,metallographic examination, strength test, hardness test and material fatigue limit testing. The results show that the material used in the balance suspension leaf spring seat meets the standard requirements, and the failure modes include multi- source high stress and low cycle bending fatigue cracking, the crack originates from the rounded root between the balance suspension leaf spring seat and the U- bolt, which is thick and easy to produce defects like shrinkage and porosity in the production process. In the structure, this position is the balance suspension leaf spring seat under the greatest stress position and a dangerous section of the part.
Authors and Affiliations
He Mingxue, Li Wei, Liu Haodong, Huang Juan, Guo Zhipeng, Liu Ying
Keywords
Related Articles
- EP ID EP731948
- DOI 10.19710/J.cnki.1003-8817.20230103
- Views 32
- Downloads 0
Study on the Static Mechanical Properties of Blind End Riveting Connection between Steel Panel and Three-dimensional Braided Carbon Fiber Panel
Static mechanical properties of blind end riveting connection between steel panel and three-dimensional braided carbon fiber panel was studied. The static test of blind end riveting connection combination with two differ...
Fracture Analysis and Rectification of Trunk Lid Torsion Bar Spring
In order to determine the fracture mechanism and cause of the trunk lid torsion bar spring, the fracture morphology, composition, size, material strength, microstructure and residual stress were tested, and a comprehen...
Analysis of Core Components of Proton Exchange Membrane Fuel Cell
At present, Proton Exchange Membrane Fuel Cell (PEMFC) has attracted people’s attention for the characteristics of high energy conversion efficiency, environmental protection and zero pollution. This paper analyzed the...
Analysis and Optimization of Welding Deformation on Vehicle Exhaust Pipe Flange
When the exhaust pipe is welded with the flange, the welding deformation of the flange affects the tightness of the exhaust pipe assembly. In order to avoid excessive welding deformation of flange during manufacturing,th...
Numerical Simulation and Experimental Study of D-Arc Deep Penetration Welding in Straight Seam of Commercial Vehicle Axle Housing
The D-Arc deep penetration welding process was applied to the straight joint welding test of 12 mm-thick axle housing of commercial vehicles, and the weld profile, welding thermal cycle and residual stress were measured...