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- The characterless zone on the fracture is the shear band instead of fracture surface of shear crack. 断口上的无特征区是剪切带,而不是剪切裂纹断口;
- TEM observation showed that the center of the adiabatic shear band (ASB) was composed of recrystallized nano-grains (about 30-70 nm in diameter). TEM观察表明绝热剪切带(ASB)中心区域由30-70纳米的等轴晶组成。
- Peak strength, mechanical behavior, and pattern of shear band (SB) of anisotropic jointed rock specimen were modeled by FLAC. 摘要采用FLAC模拟了节理倾角对各向异性岩样峰值强度、力学行为及剪切带图案的影响。
- The formation mechanism of adiabatic shear band(ASB) produced by high speed penetration in 30MnCrNiMoB low alloy steel was studied. 研究了30MnCrNiMoB低合金钢在穿甲弹冲击下绝热剪切带(ASB)的形成机制。
- In this paper,the TEM research results on the rnicrcotructure of adia- batic shear band(ASB)in various metallic material have been reviewed. 本文总结了金属材料中绝热剪切带微观结构的透射电子显微(TEM)研究成果,其主要内容涉及以下几个方面:绝热剪切带微观组织特征;
- The development of shear band was researched by analyzing the confining pressure-time history, volumetric curve and displacement field of PFC model. 通过分析围压-时步曲线、体变曲线和不同阶段的颗粒位移场的变化规律,研究了剪切带的形成与发展规律。
- The mechanism of formation of shear band in cohesionless soils is presented and verified by a fully coupled FEM procedure. 提出了无黏性土中剪切带的形成机理,并利用耦合的有限元数值分析加以验证。
- The existence of adiabatic shear band and the crack caused by the band are important features in dynamic torsion moment tests. 绝热剪切带的出现和由它引起的裂纹是动态扭矩试验时的重要特征。
- W-Ni-Mn alloy is easier to come into being adiabatic shear band(ASB) than the conventional tungsten heavy alloy,and has higher adiabatic shear sensitivity. 可见90W-Ni-Mn合金较传统钨合金更易出现剪切带,具有更高的绝热剪切敏感性。
- The fragments contained adiabatic shear band (ASB) in Ti 6Al 4V and AISI 6140 steel were studied by scanning electron microscope (SEM) and transmission electron microscope(TEM). 对含有约热剪切带(ASB)的TC4钛合金及40Cr钢破片作了扫描电镜(SEM)和透射电镜(TEM)分析。
- Microstructure and microhardness of adiabatic shear band(ASB) and those near ASB in medium carbon Cr-Ni-Mo-V ultra-high strength low alloy steel plate have been investigated. 测量了中碳Cr-Ni-Mo-V系低合金超高强度钢中绝热剪切带(ASB)及其周围金属的显微硬度,观察了其微观组织。
- In order to circumvent the mesh-dependence problem in calculating the shear band for slope stability by finite element methods,the gradient-dependent plasticity theory is adopted. 为了解决边坡稳定分析中剪切带有限元网格的依赖性问题,采用梯度塑性理论,从本构关系中引入特征长度入手,建立计算模型。
- For ZG1Cr18Ni9Ti and casting Ni-base alloy Hastelloy B, the effecting factors and critical cutting speed of thermoplastic shear instability and the character of thermoplastic shear band in cutting process are discussed. 主要讨论了ZG1Cr18Ni9Ti和镍基铸造合金Hastelloy B在切削过程中热塑剪切失稳的成因、临界切削速度以及热塑剪切带的特点。
- And then refined analysis in the local observed scope, where the shear band occurred, was conducted by specifying pairs of alinement points on image with one pixel interval covering the shear band. 然后,布置跨越剪切区域的多对测点线,进行局部范围精密搜索,识别出剪切带的准确位置与形状,并确定剪切带的边界点。
- It is also useful for analyzing formation of interface waves and the adiabatic shear bands(ASB). 通过数值与理论计算对爆炸焊接碰撞角、界面距离等因素对应变率的影响进行了讨论。
- There are two type of adiabatic shear bands,namely,the deformed bands,and the transformed bands. 结果表明,在快速加载条件下材料中有绝热剪切带生成。
- The influences of confining pressure, end constraint, height of specimen and interface on networks of shear bands are investigated numerically. 研究了围压、端面约束、试件高度及界面特性对剪切带网络形成的影响。
- He left when the band began to beat out pop music. 乐队一奏起流行音乐他就走了。
- Electron diffraction patterns showed that the phase in adiabatic shear bands as crystal structure with some dislocation cells and dislocation snarl. 衍射证明绝热剪切带内组织为晶体结构,带内有位错胞和位错缠结;
- The band played a military march. 乐队吹奏军队进行曲。