| Structural Optimization of Conical Spring of Rail Vehicle Based on Finite Element Simulation Technology |
| Received:August 08, 2022 Revised:August 08, 2022 |
| DOI：10.12136/j.issn.1000-890X.2023.06.0443 |
| Key Words: rail vehicle；conical spring；structural optimization；streamlined profile；bell type diaphragm； finite element simulation |
| Author Name | Affiliation | E-mail | | CHANG Hao* | Hunan Vocational Institute Of Safety Technology | 709051606@qq.com | | ZHANG Yang | Hunan Vocational Institute Of Safety Technology | | | CHENG Haitao | Zhuzhou Times New Material Technology Co,Ltd | | | GE Qi | Zhuzhou Times New Material Technology Co,Ltd | |
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| Abstract: |
| Based on finite element simulation technology，the structure optimization of a conical spring
of rail vehicles（hereinafter referred to as conical spring） was carried out. The results showed that Ogden
four-order hyperelastic constitutive model had a high analysis accuracy and could well reflect the large strain
characteristics of the rubber material of the conical spring. Compared with the conical spring with hook
rubber profile，the conical spring with streamlined profile could prevent the wrinkling of the rubber profile，
eliminate the stress concentration points，and extend the fatigue life of the conical spring. The conical spring
with bell type diaphragm could flexibly match the vertical stiffness and transverse stiffness by changing the
radius of the bell，thus extending the fatigue life of the conical spring. This study provided a new idea for the
structure optimization of the conical springs. |
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