The Journal of Engine Research

The Journal of Engine Research

An investigation on the effect of interference clearance of bushing on fatigue strength in triangle suspension

Document Type : Original Article

Authors
Shahab Moradi kelardeh 1
Seyed Vahid Hosseini 2
Mehdi Heidari 2
Hadi Parvaz 2
1 M.Sc., Faculty of Mechanical Engineering, Shahrood University of Technology
2 Assistance Professor, Faculty of Mechanical and Mechatronics Engineering, Shahrood University of Technology
10.22034/er.2022.697918
Abstract
Today, cars play an important role in people's daily lives. Therefore, ensuring the safe operation of car parts and their connections that are affected by high oscillating stresses is very important. since considering the fatigue strength is the requirement to make sure the quality and safety of the cars. Due to this reason, in this paper, the interference fit of the bushing in Triangle suspension was evaluated using a stair case fatigue test and finite element simulation. The finite element simulation of the ​​different interference fit was performed and evaluated according to Gerber and Goodman criteria. Experimental results showed that the durability life for parts with an interference fit ​​of 0.22, 0.15, and 0.30 mm is equal to 1.41, 1.17, and 1.17 times the applied force in the vehicle. Also, the average Gerber safety coefficient calculated from the finite element simulation results is 1.16, 1.12, and 1.07, respectively. According to Goodman and Gerber, the highest reliability interference of 0.22 mm was estimated, which was also consistent with the results of the experimental test. Therefore, it can be said that with small changes in the amount of interference fit of parts in the joints, the fatigue life of the parts can be effectively improved, which is completely consistent with the results of the references
Keywords
Crack propagation
Fatigue Test
Finite element
Interference Fit
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The Journal of Engine Research
Volume 67, Issue 67
Spring 2022
Pages 30-41

  • Receive Date 04 February 2022
  • Revise Date 19 May 2022
  • Accept Date 19 May 2022