在所有的工程构件中都存在有缺陷,而不管它们是天然的还是在加工过程中形成的。因此,防止构件的断裂设计已成为普遍的实际问题。大多数情况下,把材料起裂看作是发生在静态或准静态加载条件下。然而,在实践中的许多加载条件不能作为准静态加载条件来处理,在该情况下,必须考虑物质的惯性以及它的速率敏感性。使用对加载 All engineering components have flaws, whether they are natural or formed during processing. Therefore, preventing the fracture design of components has become a widespread practical problem. In most cases, starting material cracking is considered to occur under static or quasi-static loading conditions. However, in practice many loading conditions can not be handled as quasi-static loading conditions, in which case the inertia of the material must be taken into account as well as its rate sensitivity. Use to load