精选优质文档-倾情为你奉上stress and strain 应力与应变 In any engineering structure工程结构 the individual components独立构件 or members will （be subjected to）受到，被附加 external forces外力 arising from由。引起 the service conditions工作环境 or environment in which the component works. 在任何的工程结构中，每个零件，构件将会受到来自工作环境的外力的作用。 If the component or member is in equilibrium平衡, the resultant合力 of the external forces外力 will be zero but, nevertheless不然的话, they together place a load on the member which tends to de
