| Effect of Preload and Distance Distribution of Bolts on Rubber Sealing Performance in IGBT Sealing Structure |
| Received:May 22, 2019 Revised:May 22, 2019 |
| DOI：10.12136/j.issn.1000-890X.2019.09.0679 |
| Key Words: bolt；preload；distance distribution；rubber sealing ring；contact stress；sealing performance； finite element analysis |
| Author Name | Affiliation | E-mail | | ZHUANG Long* | Zhejiang Lingpao Technology Co. ，Ltd， | zhuanglongww@sina.com | | LI Zhengjie | Zhejiang Lingpao Technology Co. ，Ltd， | |
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| Abstract: |
| The influence of preload and distance distribution of the bolts on rubber sealing performance
in insulated gate bipolar transistor（IGBT） sealing structure was analyzed by finite element method. The
results showed that the contact stress of the symmetrical center section of the pitch was the smallest，and the
contact stress near the bolt position was larger，and there was a peak value. When the pitch was fixed and the
preload reached a certain value，the contact stress tended to be stable. Under the same preload，the number
of the bolts increased，the pitch decreased and the contact stress increased. In order to ensure the sealing
performance of rubber，the pitch of IGBT sealing structure should be set appropriately in engineering. |
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