对裂

The main contents are as follows. By the experiments of two joints under low-reversed cyclic loading, the paper analyzes the failure pattern, energy dissipation, ductility and cracking in the joint cores, evaluates the seismic performances and anti-crack behaviors of the joints, and deduces the anti-crack formula of the subassemblage and prestressed frame joint. Through the finite element analysis software Ansys , the paper analyzes the specimens nonlinearly, and the theoretical analysis results are well consistent with those of the experiment.

主要内容包括：通过两榀节点在低周反复荷载作用下的试验，分析其破坏形态、耗能能力、延性性能和节点核芯区裂缝开展情况，评估节点的抗震性能和抗裂能力，推导出预压装配式框架节点的抗裂验算公式；并运用Ansys对试验中的节点进行了非线性分析，计算结果与试验结果基本吻合。

When a horizontal well is transversally fractured with multiple stages, initial crack can induce the secondary change of the wellbore stress, producing the induced stress ield which has an inluence on subsequent crack initiation.

水平井分段压裂时，形成的初始裂缝会诱发井筒周围应力分布二次改变，产生诱导应力场。诱导应力场将会对后续裂缝起裂产生影响。

Specimens were observed for fracture lines and crack initiation by somatotype microscope and scanning electronic microscopy. The unfractured part was loaded in compression till crack, and the maximal failture loads were recorded and analyzed.

用体式显微镜及扫描电镜连续观察样本裂缝发生情况，对未发生裂缝的样本施加载荷直至碎裂，分析碎裂载荷值。

Reasonable acid system is the key factor of eliminating the fracturing fluid damage to fracture surface and proppant, and also the key factor of making the hydraulic fracturing compounding acidifying technology successful.

酸液体系是否合理是能否消除压裂液对裂缝壁面及支撑剂层损害的关键因素，因此也是水力压裂复合酸化技术能否取得成功的关键。

Applied overlay principle discloses intention at the complex load of break of grease wall of a well for individual and simple load, through set and time relevant aeriform pressure distributings function, rupture according to flexibility of stretch and mechanical, line condition of tie of stress of the upland after perforation of well of grease of mechanical and academic derivation plays factor of intensity of interstitial and most advanced stress, got deflagrating patulous condition is cracked since terrane of aeriform fracture wall of a well, the aeriform pressure gradient that this condition can follow time change inside reflective break is right the influence of interstitial configuration.

应用叠加原理将功能于油水井壁裂缝的复杂载荷分解为单个简单载荷，通过设定和时间相关的气体压力分布函数，根据弹性力学、线弹性断裂力学理论推导油水井射孔后高地应力约束条件下裂缝尖端应力强度因子，得到了爆燃气体压裂井壁岩层起裂扩展条件，该条件可以反映裂缝内随时间变化的气体压力梯度对裂缝形态的影响。

It is important for fracturing design and operation to determine hydraulic fracturing initiation pressure and mode.

确定水力裂缝在井壁处起裂的压力和方式，对水力压裂设计和施工有重要的作用。

The synthesis condition of gelling agent phosphate ester in oil base fracturing fluid is studied on this paper.

探讨了油基压裂液胶凝剂磷酸酯的合成条件，进而对配制的压裂液性能进行了评价。

Leaves narrowly rectangular-elliptic, narrowly ovate-elliptic to elliptic-oblanceolate; secondary veins 5-7 pairs; valves without transverse rugae.

狭的叶矩形的椭圆形，狭卵形椭圆形倒披针形到椭圆形；次脉5-7 对；没有横裂的皱纹的裂爿。 22 C。 hindsii 青江藤

Fracture is caused by sheet's tensile instability, Hill's totalized instability theories and Swift's diffuse instability theories which based on continuous mechanics are applied to isotropic blank; Marciniak and Kuczynski's theories are applied to orthotropic blank, which introduced thickness imperfections normal to the principal stress and strain direction as a groove pre-existing defects in the material. The stability of each part of blank at each moment is described by numerical method, and the results are shown by computer simulation, thus the fracture in sheet forming can be predicted preciously.

拉裂是由于拉伸失稳引起的，以连续体力学为基础的Hill集中性失稳理论和Swift分散性失稳理论应用到各向同性板料进行失稳判定；将Marciniak和Kuczynski的凹槽损伤失稳理论应用到正交各向异性板料拉伸失稳判定，对板料各处在成型过程中不同时刻的稳定性进行数值化描述，并运用计算机仿真技术进行直观的表现，可以准确地预测板料成型中可能出现的拉裂现象。

According to the new model and linear elastic fracture mechanics, an expression for CFCP rate, which revealed the quantitative correlation among CFCP rate, stress intensity factor amplitude, the CFCP threshold, the corrosion rate of the bare metal at the crack tip, loading frequency and the critical fracture stress of the hypothetical material elements along the crack path, was derived.

根据该模型和断裂力学原理，导出了CFCP速率的定量表达式，它揭示了CFCP速率与力学条件，裂尖表面腐蚀率、加载频率、假设的裂尖材料元临界断裂应力之间的定量关系，并能说明氢脆对CFCP率的影响规律。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新