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- Aimed at the deficiency of tube hydro plasticity technology, effect of stress ratio on tension destabilization was analyzed by plasticity mechanic. 摘要针对目前管材内液塑性成形中缺陷对工艺的影响，借助塑性力学分析手段，对轴向和环向的应力比对拉伸失稳极限应变的影响进行了分析。
- Only when the blank width ratio is confined, can no crosswise tension stress forging be realized, regardless of flat platen stretching or the new FM forging method. 无论是平砧拔长还是新FM锻造法，都要对料宽比加以控制，才能实现横向无拉应力锻造。
- Web tension Stress applied to a web in a machine for control purposes. 纸卷张力控制纸卷而施加的应力。
- Further more, tension stress near handhole was in the range of designed value. 而手孔部位的局部主拉应力较小，均在控制应力范围之内。
- A System of Detecting the Run Out and Tension Stress of a Circular Saw in Industrial Environment. 圆锯片端跳与适张应力工业化检测系统的研制。
- Under the condition that the tension stress does not arise in the female die inwall, which can be defined as target function. 以凹模内壁不允许出现拉应力为目标函数,用计算机进行优化设计出组合凹模各圈尺寸,从而获得优于传统计算的最佳设计参数。
- The factors effecting Dfc,ie ,amount of load, stress ratio, loading frequency and welding are studied as well. 并对影响临界疲劳损伤因子D_(fe)的四个因素:载荷大小、应力比、加载顺序、焊接等进行了研究。
- The focal-mechanism variation obeys a certain regularity, i. e. the compressional stress(p)or the tension stress(T), is parallel to the dip of Benioff zones. 震源机制变化具有一个明显的规律:主压应力轴(P)或主张应力轴(T)平行贝尼奥夫带倾向。
- Bending and tension stress, strain and inner deformation of semi-rigid basement layer caused by material fatigue are calculated, and their variation patterns are summed up. 对因材料疲劳引起的半刚性基层底部的弯拉应力、弯拉应变以及基层内部各点的受力状况进行了计算,并总结了它们的变化规律。
- There is much difference between the stress ratio in crown and springe calculated with these two methods. 拱冠和拱脚处的应力比值跟竖向构件比较相差悬殊;
- The changes of the interfacial shear stress under the preload and the external load and the distribution of the effective tension stress in the CFRP sheers were calculated. 研究了界面间剪应力在预应力荷载和外荷载作用下的变化规律以及放张后碳纤维中的有效拉应力分布状况。
- For the case of fatigue loading:(1)For a given stress ratio,thespecimen seeks the SDS for the largest S_(max) to which it is subjected. 对疲劳载荷作用的情况:(1)对于给定的应力比 R,试样会趋于与它所承受的 S_(max)最大值相应的 SDS 状态。
- The amplitudes of pore pressure increased notably with the increase of cyclic stress ratio, and the residual pore pressure also increased obviously. 当循环应力比增大时，动孔隙水压力变化幅值显著增加，而残余孔压也较大。
- A method of calculating the pile-soil stress ratio is conducted and the effect on main influence factors is analyzed systemically. 就粉喷桩加固路基的特点，根据力学原理，分析桩土应力比问题，获得一些有益的结论。
- For aluminum brass, both the stress ratio and the time-to-fracture ratio were closely related to the logarithmic concentration of F-ions. 而铝黄铜在其腐蚀电位的破裂形态是属于延性撕裂状的窝穴；
- Objective To investigate the shape and F-actin of human periodontal ligament fibroblasts(HPDLF) under different tension stress in vitro so as to learn the stress-biological effects of HPDLF. 目的研究动态张应力对体外培养的人牙周膜成纤维细胞(HPDLF)形态和微丝改变的影响,进一步了解HPDLF的应力生物学效应。
- During two cooling methods, whether tension stress or compression stress, the retained austenite in steel reduced with stress increasing, had become from massive to streak or filminess. 在两种冷却方式下，不论拉应力还是压应力的作用，均使组织中残余奥氏体数量减少，形貌由无应力时的块状变为条状或薄膜状。
- Three kinds of fatigue tests at certain stress ratio for unidirection T300/QY8911 Carbon/Bismalimide composite laminates were performed to obtain the S-N curves. 摘要测定了碳纤维／树脂基T300/QY8911复合材料的3组典型单轴循环应力下的S-N曲线。
- The results show that there three-dimensional tension stress exists at the corner of workpiece during grooveless rolling,and ductile fracture occurs more possibly in this area than at other places. 结果表明:无槽轧制过程中轧件角部区域存在较强的三向拉应力,相对其他区域最有可能产生裂纹;
