By experimental observation, measurement of mechanical parameter, finite element method (FEM)calculation and simulation, the effects of pre-damage on the cleavage fracture toughness and ductile initiation toughness were investigated.
通过力学参数测量,断口观察和有限元计算与细观模拟对初始损伤对低温解理断裂韧性和延性起裂韧性的影响规律及机理进行了研究。
参考来源 - 初始损伤对金属材料缺口韧性的影响及机理·2,447,543篇论文数据，部分数据来源于NoteExpress
通过引入结构单元损伤因子，对结构的初始损伤进行识别。
Through introducing the element damage indicator, then initial damage of the structure can be detected.
根据损伤力学理论，提出了含初始损伤岩体动态损伤本构模型。
According to the damage mechanics, the dynamic damage constitutive model of rock mass containing original damages is proposed.
在初始损伤的压密阶段，砂岩的密度损伤增量为正值，速率也为正；
In the stage of compaction by initial damage, density damage increment of sandstone is positive and the rate ia positive.
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