断裂的

For the first time the endplate bolted connection's finite element model with the original crack is set up by the singular element, the fracture problem study is introduced to the finite element analyzing. The J integral value and stress intensity factor of the crack tip are calculated by the ANSYS Parametric Design Language program, and the developing of original crack is judged from the K Rule and J Integral Rule.

第一次通过构造奇异单元来建立带初始裂纹的节点有限元模型，将断裂问题的研究引入到端板螺栓节点的有限元分析中，并通过ANSYS软件中Parametric Design Language编程来计算裂纹尖端的J积分值、应力强度因子，根据断裂力学中的K准则、J积分准则判断初始裂纹是否会重新启裂。

Combining the analysis and study on magnetic interface, the authors think that the crust structure here is controlled by "a pile up slopes poker face to face", which is a accepted as the growth model of Bohai gulf basin widely; There is a deep-major fault along northeast in west of the area. Its extension in deep is to southeastward which coincides in most of the faults in this area.

结合该地区航磁异常的分层计算与对比，认为本地区的地壳结构受渤海湾裂谷盆地的衬"倾牌组式构造"所控制，该地区西北部存在有北东向展布的深大断裂，其深部延展与本区大部分已确认的断裂深部延展方向基本一致且朝向东南。

Results: The profiles of split trace of 40 bone fossil samples respectively from Stegodon orientalis, Chinese rhinoceros, Cervus and other mammalian fauna were identified, some of them were found blunt and might be rodent bite marks.

结果 经40件东方剑齿象、中国犀、鹿等残骨化石标本断裂痕迹剖面的观测，发现有部分骨化石断裂剖面圆钝，似啮齿动物的咬痕，但大部分骨化石断端剖面呈锥形切削改造，有的双面削刮呈锐利器型，有的存在明显打击或铲刮的"印记"，初步认为属早期人类制作骨器的遗迹。

The structure of control earthquake is Northen Piedmont fault of Hengshan Mountain of NE strike,and the triggering seismic structure is second-order fault of NE strike.

分析了地震的发震构造，认为北东向的恒山北麓断裂是控制大同盆地的南部边界断裂，为控震构造，北西向的次级活动断层为此次地震的发震构造。

METHODS: The endodontic instrument was assumed as a metal conical bar. The normal stress of bending loads and the shear stress of torsional loads were calculated with the knowledge of mechanics. The relations between stress and such parameters as angle and radius of canal curvature, radius of instrument, polar moment of inertia, and metal elastic modulus were analyzed. The criteria for yielding and fracture of the instrument were discussed.

将根管器械刃部假设截面为圆的金属细锥杆，利用材料力学及断裂力学的原理与方法，分别计算根管器械在弯、扭载荷下的应力分布，分析应力与根管弯曲角度、根管弯曲半径、器械直径、器械横截面极惯性距、金属弹性模量等参数的确切关系；探讨器械屈服、断裂失效的准则。

METHODS: The endodontic instrument was assumed as a metal conical bar, the normal stress of bending loads and the shear stress of torsional loads were calculated with the knowledge of mechanics , the relations between stress and such parameters as angle and radius of canal curvature, radius of instrument, polar moment of inertia, metal elastic modulus were analyzed, the criteria for yielding and fracture of the instrument were discussed .

将根管器械刃部假设为截面为圆的金属细锥杆，利用材料力学及断裂力学的原理与方法，分别计算根管器械在弯、扭载荷下的应力分布，分析应力与根管弯曲角度、根管弯曲半径、器械直径、器械横截面极惯性距、金属弹性模量等参数的确切关系；探讨器械屈服、断裂失效的准则。

However, the Izod impact strength of PHB can not be improved in this way. 6. Adding plasticized PPC, a good toughener for PHB, into PHB can change its fracture behavior from brittle to ductile, and increases the Izod impact strength from 36J/m for PHB to 307J/m for 70PHB/30PPC/20PGC.

增塑后的PPC是PHB的良好增韧剂，使PHB由脆性断裂转变为韧性断裂，最佳增韧效果可使PHB的抗冲击强度由36J/m增加到70PHB/30PPC/20PGC的307J/m，增加8倍。

The fracture mechanism of totally austenite TWIP steel (steel 5#) is: the moving of dislocations is blocked by twin boundary during deformation. Micro-voids nucleate at boundary of deformation twins by the interaction between deformation twins and dislocations. Micro-voids are formation, growth, coalescence and break by the stress concentration during deformation.

全奥氏体的TWIP钢（如5＃钢）的断裂机制为：形变过程中位错的运动受孪晶界的阻碍，形变孪晶与位错的交互作用使微孔形核于孪晶界处，应力集中使微孔长大、聚合直至材料发生断裂。

The fracture mechanism of the whole austenite TWIP steel (steel 5#) was that the moving of dislocations was blocked by twin boundary during deformation, the microvoids nucleated at boundary of deformed twins by the interaction between deformed twins and dislocations, the microvoids grew, got together and broke by the stress concentration during deformation.

全奥氏体的TWIP钢（2＃钢）的断裂机制为：形变过程中位错的运动受孪晶界的阻碍，形变孪晶与位错的交互作用使微孔形核于孪晶界处，应力集中使微孔长大、聚合直至材料发生断裂。

The fracture mechanism of TWIP steel (steel1#) which contained second phase was that the microvoids nucleated due to the decreasing of binding force between austenite and second-phase or the second phase dehiscence caused by strain hardening, then the microvoids grew, got together and broke by the stress concentration during deformation.

含有第二相的TWIP钢（1＃钢）的断裂机制为：第二相和奥氏体相界面聚合力的减弱或第二相本身加工硬化导致的开裂促使微孔形核，形变过程中产生的应力集中使微孔长大、聚合直至发生断裂。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。