Analytical Modeling of Triangular Plate Deflection under Gaseous Detonation Loading

Document Type : Impact Mechanics

Authors

1 Ph.D. Student, Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran

2 َCorresponding author: Associate Professor, Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran

3 Assistant Professor, Faculty of Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran.

Abstract

The response of thin steel plates subjected to gaseous mixture detonation loading is investigated analytically to determine the possible permanent deformation of center of steel plates clamped in triangular clamping frames. Deformation profiles of plates with different thicknesses under various pre-detonation pressures are investigated which shows large plastic deformations with the maximum deformation happening at the center of mass of the triangular plate. By adopting an energy method approach developed earlier for circular plates, and incorporating a newly developed condition, upper bounds are obtained for the center of mass deformation of the triangular plate. Besides, some important parameters, including plate thickness and yield strength were studied to show the exposed area effect on the deformation profile. The results from analytical studies demonstrate a good agreement compared with experiments and show that the center of mass displacement decreases greatly with involving thicker plate and strain rate influence. Energy method as a useful tool reveals that that midpoint deflection was decreased by the smaller size of the exposed area of the plate.

Keywords

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References

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Aerospace Mechanics
Volume 18, Issue 3 - Serial Number 69
Serial No. 69, Autumn Quarterly
August 2022
Pages 41-52

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History

  • Receive Date: 08 April 2022
  • Revise Date: 23 April 2022
  • Accept Date: 28 June 2022
  • Publish Date: 23 September 2022

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