A new indentation model for sandwich circular panels with gradient metallic foam cores |
| |
| Affiliation: | 1. State Key Laboratory for Mechanical Structure Strength and Vibration, School of Aerospace, Xi''an Jiaotong University, Xi''an 710049, PR China;2. Department of Mechanical Engineering, Inha University, Inchon 402-751, South Korea;1. Mechanical Engineering Department, Faculty of Engineering, Shahid Chamran University of Ahvaz, Iran;2. Shahrekord University of Medical Sciences, Shahrekord, Iran;3. Shahrekord Branch, Islamic Azad University, Shahrekord, Iran;1. Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, University of New South Wales, Sydney 2052, Australia;2. Cooperative Research Centre for Advanced Composite Structures, 1/320 Lorimer Street, Port Melbourne, Victoria, Australia;1. Department of Mechanical Engineering, University of Guilan, P.O. Box 3756, Rasht, Iran;2. Department of Mechanical Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran |
| |
| Abstract: | A new analytical model is presented to predict indentation behavior of the sandwich circular panel with gradient foam cores under a flat-end cylindrical indenter. In the model, a displacement field of the upper face sheet of the sandwich panel is assumed to be a cosine function and plateau stress of the gradient foam core varies with the mass density along the thickness direction of the sandwich panel. The sandwich panel is modeled as an infinite, isotropic, plastic membrane on a rigid-plastic foundation. The explicit solutions of the relation between the indentation force and maximum plastic regions of the upper face sheet are derived based on the principle of minimum work. The analytical results are validated using the finite element code ABAQUS®. The influences of the gradient foam core on the maximum plastic region, the indentation force and the plastic strain energy of the sandwich panel are also investigated. |
| |
| Keywords: | A Layered structures A Foams C Analytical modeling Indentation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
