Proceeding of EDISON Challenge (EDISON SW 활용 경진대회 논문집)
- 2017.03a
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- Pages.304-310
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- 2017
항공기 날개 보의 중량경감용 천공 형상연구
- Published : 2017.03.24
Abstract
In this paper, various webs of I-shaped beam used in aircraft spars are examined. Under the assumption that an aircraft spar is a cantilevered beam with a constant cross-section and is subjected to only bending, four kinds of webs are analyzed for three different sizes. To enable comparison, each hole has the same area and are subjected to the same load by using EDISON 2D Continuum analysis. While circular hole is the most often used, elliptic one is obtained with the minimum von-Mises stress by about 40% decreased. To verify the results gathered by EDISON, comparison was made with ANSYS and analytic predictions obtained with the stress intensity factor K. As comparison shows insignificant discrepancies, it is concluded that a well-designed beam with elliptic holes will be the most efficient spar regarding weight to rigidity ratio in terms of the bending stress.
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