Mechanics & Industry
Volume 21, Number 1, 2020
|Number of page(s)||13|
|Published online||31 January 2020|
Energy absorption assessment of conical composite structures subjected to quasi-static loading through optimization based method
Centre for Composites, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
2 Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
3 National Laboratory of Solid State Microstructures & Department of Material Science and Engineering, Nanjing University, Jiangsu, PR China
Accepted: 26 November 2019
The geometry of a composite frusta-conical structure with 20° apex angle was optimized using topology optimization method. The ATOM topology solver was used to perform optimization process. The structure was subjected to an axial compressive quasi-static loading where the criterion of optimization is the largest absorption of energy per unit volume. The optimization resulted in concave shell geometry with a volume reduction of 15%. To compare the effect of geometry on energy absorption capability, two types of GFRP specimen with different thickness were fabricated using filament winding and hand lay-up methods. The axial crushing test results were validated with numerical analysis using the commercial finite element software ABAQUS. The collapse mode and failure mechanism were investigated and identified. The presented methodology helps to find the better geometry instead of testing different geometries.
Key words: Crashworthiness / conical composite / optimization method / finite element analysis
© AFM, EDP Sciences 2020
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