查询词典 tension fracture

In polycrystal, triple junction is an important grain defect which plays an important part in the deformation behavior and fracture. However, it is still less known. In this paper, zero-tension-zero test under stress control on tricrystal which grew from pure copper of 99. 999% by the Bridgman method was carried out, and the appearance of surface slip line was also obtained.

在多晶体中，三晶交线是一种重要的晶体缺陷，对多晶体的变形行为和断裂起着重要的影响，但是人们对它的了解和重视程度又是很不够的，本文首先对由99.999％的纯铜随机生长的三晶体进行了拉-零循环加载实验，得到了表面滑移线形貌，实验中采用应力控制。

Explain that fracture energy and strength decrease from the viewpoint of surface energy and surface tension.

从表面能及表面张力的观点分析了断裂能和强度降低的原因。

The authors adopted the software of finite element to simulate rock tension fracture, gave the breakdown of extensional criterion, selected the round, arch wall, rectangle, trapezoid and hemicycle as the simulation models and obtained the tension fracture forms of different shape chambers.

采用可模拟拉张破裂的有限元软件，给出拉张破裂的判据，分别选取圆形、直墙拱形、长方形、梯形、半圆形硐室模型进行拉张破裂有限元数值模拟。

Fractography analysis shows that the global tension failures trimly,because of matrix cracks and tension fracture of fiber and the compression specimens failure in a shear plane about a little angle to the compression loading direction because of delamination and longitudinal fiber shear fracture.

其拉伸断口较为平齐，基体开裂以及纤维拉伸断裂是主要破坏形式；压缩破坏呈现剪切断面，压缩断面和压缩加载方向形成一个较小夹角，层间分层和纵向纤维剪切断裂是其主要破坏形式。

Methods:Twelve patients with fresh transverse fracture of patella were reviewed in the study.The hemarthrosis,blood clot,fracture fragments and soft tissues between them were cleared with arthroscopy.With the help of C-arm X-ray,the fracture was reduced with manipulation method.After the articular facet reached anatomical reduction,two Kirschners were inserted percutaneously from proximal end to distal end of fracture to fix the fragments,Two hollow screw were put along the approach of Kirschners,and tension band fixation was performed with the shape of "8".Results:All the patients were followed up averagely 12.4 months.

12例新鲜髌骨横骨折患者通过关节镜清理关节腔内的血凝块、碎骨块和骨折块之间嵌顿的软组织，直视下观察骨折复位情况以指导骨折复位固定，在C形臂X线透视下帮助骨折复位，关节镜观察关节面解剖复位后，经皮从近折端向远折端平行打入2枚克氏针固定骨折块，顺克氏针拧入2枚中空螺钉，拔除克氏针，顺螺钉空心导入钢丝，行张力带&8&字固定。

Based on linear elastic fracture theory, a damage evolution equation for composite soild propellant under uniaxial tension is derived. Main mecrosopic of material are determined through fittin the experiment data of constant rate tension. Then, the integrate constitutive equations found is close to microlevel.

基于线弹性断裂理论，提出了一个适合复合固体推进剂的脱湿微裂纹损伤发展方程，通过部分单向定速拉伸试验数据拟合确定其主要的细观参数，从而得到了复合固体推进剂在细观水平上完整且封闭的本构方程组。

The equilibrium phase particles that induce the sensitivity of the quenching are not the direct reason that causes the alloy fracture; the microzone of PFZ around particles limits crack extension and coordinates deformation, this causes the formation of the ductile tension fracture.

引起淬火敏感性的平衡相粒子，不是造成合金断裂的直接原因，粒子周围的无析出微区起到了限制裂纹扩展和协调变形的作用，是合金形成延性拉伸断口的原因。

METHODS: Eight fresh patellae specimens were divided into two groups at random, AO steel wire group (n = 2) and absorbable tension band group (n = 6) to create models of transverse fractures, which were separately fixed by absorbable tension band, steel wire tension band + Kirschner wire to measure their biomechanics function. If fracture gap reached 1.0 mm, the fixation failed.

随机分成AO钢丝组2个和可吸收张力带组6个，制成横断骨折模型，分别用可吸收张力带、钢丝张力带加克氏针进行内固定，测定它们的生物力学性能，骨折端分离1.0 mm为固定失效。

The hoop tension force is axisymmetrical about the tension direction and increase from the top position to both sides. The distribution of hoop tension force is even with small friction coefficient, but will increase rapidly from top to side positions, which subsequently result in necking and fracture near the edge of gauge section.

结果表明：采用正压力线性变化假设所得的切向力分布规律与拉伸实验结果吻合较好；切向力关于拉伸方向呈轴对称分布，从正上方到两侧逐渐增大；当摩擦系数较小时，切向力分布较均匀，但当摩擦系数较大时，切向力从正上方到两侧迅速增大，试样的颈缩和断裂发生在标距段内靠近标距边缘的位置。

However, there axe defects of the surgical operation in three cases, two cases suffer from knee joint dysfunction as the result of long stay of pin tail of the Kirschne and the left is caused by poor fracture reposition Conclusion: The tension-band internal fixation for the treatment of fractures has such advantages as no external fixation after surgery, early functional exercise, quick fracture healing, good recovery of joint function and resuming the ability to work as early as possible.

张力带内固定治疗骨折方法，具有术后不用外固定，允许早期功能锻炼，骨折愈合快，关节功能恢复好和劳动能力恢复早的优点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。