Numerical and experimental studies on aluminum sandwich plates of variable thickness |
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| Authors: | Jeng‐Shian Chang Hong‐Chung Chen Han‐Ting Lin |
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| Affiliation: | 1. Institute of Applied Mechanics , National Taiwan University , Taipei 106, Taiwan Phone: 886–2–33665678 E-mail: jschang@gauss.iam.ntu.edu.tw;2. Department of Naval Architecture , National Kaohsiung Marine University , Kaohsiung 811, Taiwan;3. Institute of Applied Mechanics , National Taiwan University , Taipei 106, Taiwan |
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| Abstract: | Abstract The elastic flexural behavior of static deformation and free vibration of sandwich plates of variable thickness is investigated numerically and experimentally. In the analysis, the face plates are treated as Marguerre shells, and the core is assumed to be an antiplane core and to provide resistance to transverse shear and normal stresses only. Displacement continuity conditions are used at the interfaces between face plates and the core to derive the displacement field. Energy formulations are obtained and solved by the isoparametric finite element method. The numerical results are obtained to compare with the results in the existing literature and to show the effects of taper constant and face plate thickness on deflections and natural frequencies. Finally, experimental works based on the method of holographic interferometry are conducted to confirm the theoretical findings. Experimental and numerical data agree quite well in this work. |
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| Keywords: | sandwich plate variable thickness finite element method holographic interferometry |
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