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스틸 휠 굽힘 모멘트 내구시험의 내구신뢰성 개선에 대한 연구
정수식(Chung Soo Sik),정원욱(Jung Won Wook),유연상(Yoo Yeon Sang),강우종(Kang Woo Jong),김대성(Kim Dae Sung),권일기(Kwon iL Ki) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The failure mode of steel road wheels in a vehicle is cracks from ventilation hole through to contact plane on steel wheel’s disc plate. But a number of cracks of Cornering Fatigue Limit Test is on contact plane near to wheel nut mounting area, even though it’s satisfied with specified cycles. So this paper searches out causes to improve durability and reliability of C.F.T by uni-axial bending moment test. The verified cause is a “fretting” on contact area of steel wheel. In result, this paper suggests a solution to prevent a fretting by inserting a damping shim, 0.7㎜ between steel wheel contact areas. Therefore this paper makes it possible to move crack position of C.F.T in steel wheel from contact plane to vehicle’s failure mode.