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材料的强度与破坏理论是研究材料在各种应力下的屈服或破坏规律,它的研究最早可以追溯到400多年以前,伽利略在研究砖、铸铁和石头的拉伸断裂时,发现当施加应力达到一临界值时材料发生断裂,这即是最大正应力准则或第一强度理论。随后库仑在研究土和砂岩的压缩强度后,于1773年提
The strength and failure theory of materials is to study the law of yielding or failure of materials under various stresses. The earliest research of this material can be traced back to more than 400 years ago. When Galileo studied the tensile fracture of brick, cast iron and stone, it was found that when the applied stress reached A critical value of the material fracture, which is the maximum normal stress theory or first strength theory. Coulomb was subsequently raised in 1773 after studying the compressive strength of earth and sandstone