Buckling of Shallow Spherical Shells Under Uniform Pressure in Uniform Temperature Field

ZHAO Wei-dong; YANG Ya-ping

doi:10.3879/j.issn.1000-0887.2015.03.004

Volume 36 Issue 3

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ZHAO Wei-dong, YANG Ya-ping. Buckling of Shallow Spherical Shells Under Uniform Pressure in Uniform Temperature Field[J]. Applied Mathematics and Mechanics, 2015, 36(3): 262-273. doi: 10.3879/j.issn.1000-0887.2015.03.004

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Buckling of Shallow Spherical Shells Under Uniform Pressure in Uniform Temperature Field

doi: 10.3879/j.issn.1000-0887.2015.03.004

School of Civil Engineering, Qinghai University, Xining 810016, P.R.China

Received Date: 2014-07-04
Rev Recd Date: 2015-01-29
Publish Date: 2015-03-15

Abstract

Abstract

According to the geometrical nonlinear theory for shallow shells, the displacementtype geometrical nonlinear governing equations for shallow spherical shells under uniform pressure in uniform temperature field were derived. With the shooting method, the numerical results of axisymmetric bending and buckling of the shallow spherical shell in the clamped boundary condition were obtained. The effects of various shell geometrical parameters on the equilibrium paths and the critical loads were discussed. The critical shell geometrical parameter was defined. And it is found that both the upper and lower critical loads increase with the geometrical parameter in the range beyond its critical value. The effects of different values of the uniform temperature field on the upper and lower critical loads, the critical geometrical parameter, and the equilibrium configurations were investigated under a given geometrical parameter. Rise of the uniform temperature brings obvious increase of the upper critical load and slight decrease of the lower critical load. Moreover, change of the uniform temperature influences the critical shell geometrical parameter a lot.
- shallow spherical shell,
- uniform pressure,
- uniform temperature field,
- buckling,
- critical load,
- critical geometrical parameter,
- shooting method

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References

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