采用有限元法对驱动桥壳疲劳失效形式的预测分析外文文献.pdf

Engineering Failure Analysis 16 (2009) 1474–1482 Contents lists available at ScienceDirect Engineering Failure Analysis journal homepage: www.elsevier .com/locate/engfailanal Fatigue failure prediction of a rear axle housing prototype by using finite element analysis M.M. Topaç a,*, H. Günal b, N.S. Kuralay a a Department of Mechanical Engineering, Dokuz Eylül University, Faculty of Engineering, 35100 Bornova, Izmir, Turkey b Ege Endüstri ve Ticaret A. S., Kemalpasa Caddesi No. 18, 35060 Pınarbası, Izmir, Turkey a r t i c l e i n f o a b s t r a c t Article history: A premature failure that occurs prior to the expected load cycles during the vertical fatigue Received 14 August 2008 tests of a rear axle housing prototype is studied. In these tests, crack mainly originated Accepted 12 September 2008 from the same region on test samples. To determine the reason of the failure, a detailed Available online 25 September 2008 CAD model of the housing was developed. Mechanical properties of the housing material were determined via tensile tests. Using these data, stress and fatigue analyses were per- Keywords: formed by finite element method. Fatigue crack initiation locations and minimum number Rear axle housing of load cycles before failure initiation were determined. Results provided from tests were Stress concentrations compared with the analyses. Design enhancement