Crashworthiness Analysis of Light Sport Aircraft Structure by Topology Optimization

• Main Authors: Yung-Yun Chen, 程永耘
• Other Authors: 陳步偉
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/90301046566146226701

碩士 === 淡江大學 === 航空太空工程學系碩士班 === 102 === In recent years, the general aviation develop to flourish, and also get more attention on security of general aviation. The general aviation which use single piston engine such as light aircraft and light sport aircraft, its high fatal rate also point out the structure needed to be improve. Improving security dependant on the crashworthiness of the aircraft, and the way to improve is strengthen structure and change material. This study use Abaqus, the finite element software and topology optimization to achieve the goals of enhance structure strength. Boundary conditions of dynamic simulation are impact angle defined by AGATE and landing speed followed by ASTM. Build safety zone base on 15% safe reducing rate by MIL-STD-1290A. The result of this study is that optimum model compare with original model, the safety zone of cant beam increase 12%, the safety zone along x direction increase 13%, and the total safety zone increase 10%. The above results show that the crashworthiness of optimum model is better than original model.