应力轴

The first rapid relaxation process, a second relaxation process after going by a flat region and another stress increase process in the long time region, were observed from tensional stress relaxation curves of DMSO swelling and decrystallization treated oven-dry wood.

从DMSO膨胀处理及非晶化处理绝干木材的轴向拉伸应力松弛曲线，观察到了初始的快速松弛过程、经过平坦区后的缓慢的再次松弛过程及长时间后的应力增加过程。

The analytical expression of axie displacement, axie stress and interlaminar shear stress were given under some simple loading forms.

给出了一些简单载荷作用下的轴向位移、应力及层间剪切应力的解析表达式。

The focus in long bone appears patchy geographic type, the courser of its long axis was coherent with the stress bone trabecula; the focus in vertebral bodies show laterigrade band-like which was distributed in the middle of the vertebral bodies or near the termibal lamella and plumbed with stress bone trabecula of the vertebral bodies.

在长骨灶病呈长斑片地图样，其长轴大体与应力骨小梁走行相一致；在脊柱椎体病灶表现为分布于椎体中央或近终板区的呈横形小片条带状，与椎体应力骨小梁排列垂直。

In this paper,a fourparameter multiaxial strength criterion for LWA concrete is presented.

试验证明，混凝土在复杂应力状态下与单轴应力状态下的强度和变形性能有较大的差异。

The ratchetting experiments of 316L and 1Cr18Ni9Ti stainless steel cyclically loaded under proportional and nonproportional conditions were performed respectively.

通过对两种不锈钢材料分别进行比例和非比例应力循环加载棘轮效应试验，揭示了两种不锈钢材料的棘轮效应的一些特征，和导致这些棘轮效应特征的原因，得到了一些有意义的结果，为建立能较为精确地描述结构在多轴应力循环下的累积变形的本构模型提供了一定的实验及理论分析依

Based on Chaboche's Continuum Damage Mechanics Model, this study suggested low-cycle fatigue damage model under nonproportional loading, in which maximum shear stress and mean hydrostatic stress are considered as two basic parameters and nonproportionality of loading path is considered as a damage parameter to enter damage evolution equation which may well describe damage evolution law of low-cycle fatigue under nonproportional loading.

按Chaboche的连续损伤力学方法建立的多轴非比例加载下低周疲劳损伤模型，以最大剪应力和平均静水应力作为两个基本参量，将路径的非比例度作为损伤参量引入损伤演化方程中，可以较好地描述非比例加载下低周疲劳的损伤演化。

The simulation results show that this method can reduce maximal axial stress by more than 5%, and it observably improves stress distribution.

仿真结果表明，此方法可使螺栓轴向最大应力值降低5%以上，并有效地改善了应力分布。

The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5～7％ and spring-back is controlled between200~300MPa are appropriate.

结果表明，动三轴试验较好地模拟了级配碎石层的实际受力状态；Uzan模型考虑了材料的剪切性能，更能反映了级配碎石在隧道路面中应力状态；随含水量的变化，Uzan模型中回归系数变化呈明显的非线性特征，进而显著影响级配碎石的动态回弹模量的变化；级配碎石模量越大，路面层底的最大拉应力减小率越小；为了兼顾到级配碎石层的排水渗透功能和强度，应严格控制级配，特别是0.075mm以下的含量宜控制在5％～7％，级配碎石的回弹模量宜控制在200～300MPa之间。

The electron densities of statesof GaN under different biaxial stress field were calculated. The theoretical Auger spectra N KVV of various stress conditions were obtained by convoluting the DOS and fitting the experimental spectra.

通过第一性原理计算模拟GaN在不同双轴压应力场中的电子结构，根据拟合实验谱确定的组合系数，模拟出不同应变/应力下的N KVV的理论俄歇价电子谱；标定应变/应力与俄歇电子谱广义位移的定量关系。

And destruction usually occurs on angle.(2)Around the keyhole, the stress centralizes, column" edge opt to inflects in local.(3)The change of friction coefficients or bolt pretension forces can"t affect the performance of top-and-seat angel connections so much.(4)The parameters of angel influence joints performance greatly.

破坏一般是由于顶角钢上应力过大，形成塑性铰而导致的；(2)柱翼缘在与顶角钢相连的螺栓孔周围，存在应力集中，容易导致局部屈曲；(3)材料抗滑移系数的改变和螺栓预拉力的大小对于节点受力性能的影响并不明显；(4)角钢参数的改变对节点的各项性能影响显著，增加角钢厚度，节点的强度、刚度和延性都能得到明显的提高；增加角钢长度，节点的强度和刚度也有较大的提高，延性则略有下降；(5)柱轴压比过大时，节点的承载力、刚度以及变形能力明显下降；(6)螺栓中心线到角钢肢背距离增大时，节点的强度和刚度有所下降，但延性略有增加。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。