Reliability of Machine Elements Based on Static and Dynamic Factor of Allowable Safety under Fluctuating Load

변동하중을 받는 기계요소의 정 .동적 허용안전계수를 고려한 신뢰성

It is common to assum identical allowable safety factors in static strength, defined by mean stress and in fatigue, defined by stress amplitude. Under the load with asymmetrical cycles the safety factor is not the same. In this paper, with the consideration of unequal allowable safety factors a general method for estimating fatigue reliability of a machine element under a combined state of stress is derived based on the theory proposed by Prof. Kececioglu and normal distribution. The calculation of fatigue reliability for limited life is discussed with example.