STUDY ON OPTIMIZATION OF COMPOSITE CONICAL STRUCTURES FOR CRASHWORTHINESS APPLICATIONS | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 136, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 79-89 PDF (397.62 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2008.39804 | ||
| Author | ||
| ALJIBORI H.S. S. | ||
| Mechanical Engineering Dept, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia. | ||
| Abstract | ||
| ABSTRACT In the last decade, lightweight energy-absorption structures in airframes and automotive vehicles are increasingly used to meet the crashworthiness requirements with a minimum weight increase. Crashworthiness may be defined as the ability of a vehicle to protect its occupants from death or serious injury in an accident of a given severity. Composite materials are often used to reduce the weight of structures. In the automotive industry weight reduction is important because fuel consumption is directly related to vehicular weight. In this paper numerical investigations into the crushing of woven roving laminated conical system have been conducted. Energy absorption capability can be achieved if the longitudinal properties of composite structures are being utilized. This can only be done if the energy absorbing system post failure scenario would be mitigated to be tearing failure mechanism. The system was designed by slipping a solid cone into composite cone. The semi cone angles used were 4, 8, 12, 16 and 20 degrees. The cone height and bottom diameter were kept constant for all cases as 100 mm and 76.2 mm, respectively. The results demonstrated that the energy was dissipated in the form of friction at the first crush stage, while the post crush stage was dominated by tearing failure mechanisms. | ||
| Keywords | ||
| Composite, Optimization; tearing mechanisms; Energy absorber; cone | ||
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