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本文通过对几种材料的低周疲劳实验研究,证明了循环应力-应变与寿命关系中的六个常数不是独立的,而存在相关关系。过渡寿命N_T是低周疲劳关键指标,对大多数合金钢而言,采用实测结果是有效利用材料的重要一环。
In this paper, we study the low-cycle fatigue of several materials and prove that the six constants in the relationship between cyclic stress-strain and life are not independent but have a correlation. Transition life N_T is a key indicator of low cycle fatigue. For most steel alloys, the use of measured results is an important part of the effective use of materials.