Member fatigue fracture probability estimating apparatus, member fatigue fracture probability estimating method, and computer readable medium

摘要

An effective volume V_ep of a member is calculated with a stress correction amount σ_corr added to an effective stress (stress amplitude) σ_ip at each position of the member so that a fatigue strength of the member varying corresponding to an average stress varying depending on the position of the member is apparently constant at a value when the average stress on the member is 0 (zero) irrespective of the position of the member, and a cumulative fracture probability P_fp due to fatigue of the member is derived using the effective volume V_ep of the member.