首先谈一谈断裂力学与常规强度计算之间的关系。这是一个很重要的问题。这些年,我们开展断裂力学研究工作以来,有些同志觉得,好象断裂力学可以代替常规的一套强度计算了,出现了所谓“力学之贫困”的说法,好象过去的一套行之有效的力学理论已经走到穷途末路,看来,断裂力学大有包打天下之势,这恐怕是一种错觉。断裂力学的出现,主要是为了解决一些带有初始缺 First, talk about the relationship between fracture mechanics and conventional strength calculation. This is a very important issue. Since we started the research on fracture mechanics in recent years, some comrades think that it seems that fracture mechanics can be used instead of the conventional set of intensity calculations. The so-called “impoverishment of mechanics” has appeared, as if the past set of effective Mechanics theory has come to a dead end, it seems that a lot of fracture mechanics to fight the world trend, which is probably a delusion. The emergence of fracture mechanics, mainly to solve some with the initial lack of