Volume 29 Issue 2
Feb.  2014
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ZHANG Ping, ZHOU Li, QIU Tao, CHENG Wen-jie. Bi-stable mechanical behavior of shallow thin spherical shell with elliptical bottom[J]. Journal of Aerospace Power, 2014, 29(2): 328-336. doi: 10.13224/j.cnki.jasp.2014.02.012
Citation: ZHANG Ping, ZHOU Li, QIU Tao, CHENG Wen-jie. Bi-stable mechanical behavior of shallow thin spherical shell with elliptical bottom[J]. Journal of Aerospace Power, 2014, 29(2): 328-336. doi: 10.13224/j.cnki.jasp.2014.02.012

Bi-stable mechanical behavior of shallow thin spherical shell with elliptical bottom

doi: 10.13224/j.cnki.jasp.2014.02.012
  • Received Date: 2012-12-22
  • Publish Date: 2014-02-28
  • To meet the design requirements of a morphing bump surface,a research was conducted on the bi-stable mechanical behavior of a hinged shallow thin spherical shell with elliptical bottom surface.The conversion mechanism and required condition of the shell's two stable configurations were analyzed by simulation method.Also the snap-through type,which occurred in the transition process of stable configurations,and its influential factors,were analyzed.Finally the effects of the loading position and shape parameters on the critical driving force and structural strain were given under different driving modes.The results show that the bi-stability condition of the hinged structure requires a certain ratio of shell height to shell thickness;there exist combinations of local and overall snap-through phenomena during the transition process of the structural stable configurations,which could be controlled by the loading position and structural parameters;in case of structure snap,the critical load and structural strain are related to the load methods and structural parameters.

     

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