Optimization Analysis on the Crashworthiness of Light Aircrafts

Pu-Woei Chen and Yung-Yun Chen
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Pu-Woei Chen: Tamkang University, New Taipei City, Taiwan
Yung-Yun Chen: Tamkang University, New Taipei City, Taiwan

International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 2015, vol. 5, issue 3, 1-23

Abstract: To protect passengers, large aircraft are equipped with multiple mechanisms to absorb impact energy during a crash. However, light aircraft rely only on the cabin structure to withstand the compression and energy generated during a crash. This study performed a topology optimization analysis on the model structure by using Abaqus/optimization and used strain energy as the objective function and cabin volume as a constraint to develop the optimal model. Subsequently, this work performed dynamic crash simulations based on the optimal and original models by using Abaqus/explicit. Compared with the original model, the optimal model yielded a 12% increase in the safety zone of the diagonal beams, a 13% increase in the X-direction safety zone, and a 10% increase in the overall safety zone. The results confirm that topology optimization can be used to effectively improve the crashworthiness of light aircraft.

Date: 2015
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