This paper studies the relationship between the static toughness and fatiguefailure firstly, then getting the damage formula expressed by toughness.
本文研究了材料的静力韧性与疲劳损伤之间的关系，并在此基础上得到用韧性表示的损伤表达式。
2
The paper discusses the failure mechanism of structural system subjected to dead and fatigue load and gives the method of reliability analysis considering static strength and fatigue.