Amirkabir Journal of Mechanical Engineering

Amirkabir Journal of Mechanical Engineering

Three-Dimensional Elastic-Plastic Deformation Analysis of Composite Sandwich Panel under Blast Loading

Document Type : Research Article

Authors
Seyed Ali Ahmadi 1
Ali Maleki 2
Mohammad Hadi Pashaei 1
1 Department of mechanical engineering, Babol Noshirvani university of technology, Babol, Iran
2 Department of mechanical engineering, Faculty of mechanical engineering, University Of malek Ashtar, Tehran, Iran
10.22060/mej.2019.15065.6013
Abstract
A numerical analysis based on the three-dimensional elasticity solution is presented for predicting the plastic deformation of a cylindrical composite sandwich panel. An extended non[1]linear higher-order sandwich panel theory is applied to model core compressible effect. The non-linear governing partial differential equations of motion are discretized and reduced to ordinary differential equations by applying the differential quadrature method and solved using the newmark method. The effects of various parameters including panel dimensions, layers thickness, pulse duration and maximum pressure on the plastic deformation of the panel were investigated. The obtained results using the present method are compared with finite element solutions by commercial software ANSYS and good agreement is demonstrated. It is observed that significantly less computational time and hardware capacity for the proposed method with respect to the finite element solution is required. It was shown that inner layer of sandwich panels are supposed to higher stresses and are more likely places for panel failure.
Keywords
Sandwich panel
Plastic deformation
Facesheet fracture
Blast loading
Differential quadrature -newmark
Subjects
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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 5
August 2020
Pages 1079-1100