SUS304の軸力-ねじり重畳負荷下における多軸疲労およびクリープ疲労強度

概要

論文の詳細を見る
A series of fatigue and creep-fatigue tests were conducted with 304 stainless steel at 550℃ under a variety of biaxial strain conditions. Fatigue life under nonproportional loading conditions showed a significant life reduction compared with that of proportional loading, and this life reduction was reasonably estimated by taking into account the strain paths along which the strain history is imposed. Furthermore, a marked life reduction was shown to occur under nonproportional loading by imposing a strain hold period at a peak tensile strain. This life reduction was evaluated by the linear damage rule. It was shown to be possible to estimate the fatigue damage and the creep damage under nonproportional loading by a linear damage rule by estimating a stress relaxation behavior by Mises-type equivalent stress or Huddleston-type equivalent stress.
社団法人日本機械学会の論文
1990-03-25