Open AccessEnergy absorption assessment of conical composite structures subjected to quasi-static loading through optimization based method
Author(s) -
Amin Bassiri Nia,
Ali Farokhi Nejad,
Xin Li,
Amran Ayob,
Mohd Yazid Yahya
Publication year - 2020
Publication title -
mechanics and industry
Language(s) - English
Resource type - Journals
eISSN - 2257-7777
pISSN - 2257-7750
DOI - 10.1051/meca/2019088
Subject(s) - conical surface , materials science , filament winding , topology optimization , structural engineering , finite element method , composite number , solver , fibre reinforced plastic , geometry , composite material , topology (electrical circuits) , mathematics , engineering , mathematical optimization , combinatorics
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.