Steel cutting surface or shear surface should have no cracks , slag , stratification and the lack of greater than 1 mm prism 钢材切割面或剪切面应无裂纹、夹渣、分层和大于1 ?的缺棱。
The results show that the frictions caused by the wall of shear box will influence the distributions of stresses in specimens and the normal pressure stresses on the shear plane 结果表明,剪力盒壁摩擦力将会影响试验土样中的应力分布和剪切面上的正压应力值。
Another is shear - model fracture which is thought that it is associated with dislocation motion ( shear + rotation ) of crystal at microlevel , fragmentation of solid at mesoscale level and large plastic strains at the macroscopic level 剪切型断裂在微观上与晶粒内或晶粒间的滑移和位错有关,细观上与集中变形带中的微剪切面集中有关,宏观上则与结构内的集中剪切带有关。
The coherence force c and the inner friction angle of composite increase 115 % - 205 % and 11 % ~ 15 % respectively more than that of no rootstalk soil . 3 the mechanism of dealing with corn rootstalks and eight kinds of blades for experiment in the soil bin have been developed in order to investigating the performance of dealing with rootstalks 土壤-根茬复合体其抗剪强度与剪切面上的法向压应力成正比,复合体土壤凝聚力c比无根土壤增加115 205 ;内摩擦角增加11 15 。