Multi-objective optimization of sandwich composite pressure hull for decreasing weight and drag force and increasing buckling load capacity | ||||
| The International Conference on Civil and Architecture Engineering | ||||
| Volume 13, Issue 13, July 2020, Page 1-19 PDF (1.39 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.1088/1757-899X/974/1/012009 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mahmoud Helal1; Elsayed Fathallah2 | ||||
| 1Department of Mechanical Engineering, Faculty of Engineering, Taif University, Taif 21974, Saudi Arabia., Production and Mechanical Design Dept., Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt. | ||||
| 2Department of Civil Engineering, Military Technical College, Cairo, Egypt., Ships and Submarines Engineering Department, Military Technical College, Cairo, Egypt. | ||||
| Abstract | ||||
| In underwater applications, space vehicles, and aircrafts, the weight becomes an important factor. Additionally, the design of composites structures greatly depends on the number of layers and the fiber orientation angle. Therefore, this work presents the optimization of sandwich composite pressure hull in order to minimize (weight and drag force) and maximize the buckling load capacity using ANSYS Parametric Design Language (APDL). Tsai-Wu and maximum stress failure criteria were incorporated for predicting the first-ply failure. The major and minor radius of the pressure hull, the ring and long beams dimensions, the fiber orientation angle and layer thickness are taken as design variables. The results illustrated that, core thickness (Tcore) has a great effect to resist the shell buckling. While, has a little effect on both Tsai-Wu and maximum stress failure index. | ||||
| Keywords | ||||
| Multi-objective optimization; Buckling; drag force; pressure hull; Tsai-Wu | ||||
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