Drill string receives the complicated stress which is tension-compression stress, torsion stress, bending stress, etc.
在长期工作中，钻具承受拉伸、压缩、弯曲和扭转等复杂应力。
The thermal residual stress gives rise to the differences between tension and compression behaviors of the composites.
同时。热残余应力是导致复合材料拉、压机械性能不同的主要原因。
Shear band formation due to void nucleation and growth were successfully simulated in a specimen of geomaterial under plane stress compression and tension by the model respectively.
采用该模型，成功地对平面应力条件下岩土材料单轴受压和单轴受拉试件的局部化破坏分别进行了数值模拟。
A bending test has a merit that detection of deformation is relatively easy and a demerit that a stress state is not simple as compared with a compression or tension test.
弯曲试验有着能比较容易地探测变形的优点，缺点是应力状态不象压缩或拉伸试验那样简单。
Stress results from forces such as tension, compression, or shear that pull, push, twist, cut, or in some way deform or change the shape of a piece of material.
压力产生于拉伸，压缩，或者拖，推，扭，削之类的剪切，或者某种变形以及材料的部分形状改变。
This stress, causing breakage, will be a tension since concretes are from 9 to 11 times as strong in compression as in tension.
由于混凝土的抗压强度为其抗拉强度的9到11倍，引起折断的应力是拉应力。
The tension stress may induce compression stress.
拉应力可以诱发压应力的出现。
Meanwhile, it is found that the mid-board stress is appropriate with overall compression yet partially with small tension stress through analyzing the results of the completed construction.
结果分析表明，施工完成后，中墙受力较为合理，表现为整体受压，只有局部有很小的拉应力存在。
The strength experiments of lightweight aggregate (LWA) concrete after freeze-thaw cycling in seawater under biaxial splitting tension and compression stress are preformed.
进行海水中不同冻融循环次数后轻骨料混凝土双轴拉(劈拉)压状态下的强度试验，考察试件的破坏形态和表面裂缝的走向特征。
Their evolution has been alternatively controlled by two kinds of stress field-left lateral compression, right lateral tension.
它们的演化受左旋挤压、右旋拉张两种应力场的转换控制。
The proof strength can be used to evaluate the tension-compression fatigue strength of gray cast iron, and also used as the stress level of the tension-compression fatigue test.
利用引伸计拉力试验中的规定总延伸强度可以评价灰铸铁的拉压疲劳极限，也可以利用该数值作为预计的疲劳极限，用于拉压疲劳试验应力水平的选取。
On this basis, the failure criterion of concrete simultaneously considering the freeze-thaw cycle and tension-compression ratio in principle stress space and octahedral space is established.
在此基础上，分析了双轴拉-压极限强度随冻融循环次数的变化规律，并在主应力空间和八面体应力空间建立了同时考虑冻融循环次数和拉压比的破坏准则。
It is shown that the interval tension fracture would occur repeatedly under large axial compression stress, which forms the layered failure.
研究结果表明，在很大的轴向水平压力作用下，介质会产生间隔的拉伸裂缝，形成分层断裂现象。
Based on the test results, the stress-strain behaviors of compacted clay under triaxial compression, triaxial tension and compression-to-tension states are investigated.
根据试验结果，研究了压实黏土在三轴压缩、拉伸以及从压缩到反向拉伸状态下的应力应变特性。
Based on the test results, the stress-strain behaviors of compacted clay under triaxial compression, triaxial tension and compression-to-tension states are investigated.
根据试验结果，研究了压实黏土在三轴压缩、拉伸以及从压缩到反向拉伸状态下的应力应变特性。
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