Buckling Behaviors of Elastomers With Periodic Elliptical Holes Under Negative Pressure Activation

LIANG Guanpo; FU Yuxin; LOU Benliang; XIE Yuxin

doi:10.21656/1000-0887.420100

Volume 42 Issue 12

Dec. 2021

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LIANG Guanpo, FU Yuxin, LOU Benliang, XIE Yuxin. Buckling Behaviors of Elastomers With Periodic Elliptical Holes Under Negative Pressure Activation[J]. Applied Mathematics and Mechanics, 2021, 42(12): 1221-1228. doi: 10.21656/1000-0887.420100

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Buckling Behaviors of Elastomers With Periodic Elliptical Holes Under Negative Pressure Activation

doi: 10.21656/1000-0887.420100

School of Mechanical Engineering, Tianjin University, Tianjin 300350, P.R.China

Received Date: 2021-04-16
Accepted Date: 2021-04-16
Rev Recd Date: 2021-05-10

Available Online: 2021-12-31

Publish Date: 2021-12-01

Abstract

Abstract

The buckling behaviors of 2D structures with periodic elliptical holes were studied through numerical simulations and theoretical analysis. A theoretical model was established for the modal analysis corresponding to different buckling modes. The analysis results indicate that, there is a transformation between the buckling modes of the 2D structure with elliptical holes, with the change of the geometrical parameters of the holes. The theoretical analysis and the numerical results match up. Furthermore, in the numerical simulation, a modified force boundary condition for a unit cell under negative pressure activation, being different from the displacement loading, should be considered to ensure the completeness conditions are fulfilled. The confusion in the application of appropriate boundary conditions for the unit cell will result in errors. The choice of the unit cell and the derivation of correct boundary conditions, combined with finite structures, were discussed.
- negative pressure activation,
- porous elastomer,
- metamaterial,
- buckling

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References(20)

References

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