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- peak stress intensity 峰值应力强度
- Normal Stress Intensity Factor Ratio Criterion. 此准则是一种综合考虑了正应力强度因子和剪应力强度因子对裂纹起裂。
- In peak stress,the above value were 71%,93%,76%,96% and 57% for 2-D DSE and 83%,93%,86%,97% and 68% for 3-D DSE. 负荷状态下,2 - D DSE敏感性71%25 ,特异性93%25 ,准确性76%25 ,阳性预测值96%25 ,阴性预测值5 7%25。
- The results show that peak stress of rock specimens increases with confining pressure. 研究结果表明,岩样的峰值应力都随着围压的增大而增大。
- The task of determining the stress intensity factor is by no means a simple one. 确定应力强度因子的工作决不是简单的事件。
- The deformation properties of pyrophyllite powder compact after peak stress were changed from strain softening to ideal plasticity. 相比于粉压叶蜡石峰后从应变软化转化为理想塑性,天然叶蜡石表现出相对的脆性。
- The second stiffness, the peak stress and strain declined with preload ratio ascending, and the extent developed with the enhancement of CFRP ply. 而碳纤维包裹层数的增加,则放大了这种效应。
- The relatively small reduction in stress intensity magnification factor with increasing stiffness of the stiffener. 随着加强肋刚度的增加,应力强度放大因子则相应有所减小。
- Experiential formulas are established on the relationships between strain rate and strength, strain at peak stress and modulus. 对强度、峰值应力处应变、弹性模量分别给出了反映应变速率影响的经验公式;
- The phonon field and phason field stress intensity factors and stress distribution at the crack tips are also given. 进一步可以求得裂纹尖端的声子场和相位子场的应力强度因子,由这些应力强度因子求解了裂尖处的声子场和相位子场的应力分布。
- The uniaxial press stress-strain curve could be founded if only the initial elastic modulus, peak stress and its secant modulus are determined. 只要知道腐蚀混凝土初始弹性模量、峰值应力及此时的割线模量,就可以建立混凝土腐蚀单轴受压应力-应变曲线。
- The calculated results show that the stress intensity of vessel in CEFR meets the requirements of ASME code. ? 计算与评定结果表明:CEFR堆容器的应力强度满足《ASME规范》和《核电厂抗震设计规范》(GB50267 95)要求。
- The stress intensity factors of both orthotropic and isotropic materials can be obtained from the present results. 正交各向异性和各向同性材料的应力强度因子均为本文的特例。
- Wu X R, Carlsson A J. Weight functions and stress intensity factor solutions. Oxford: Pergamon Press, 1991. 赵伟.;三维裂纹分析的权函数理论及应用[博士学位论文]
- The failure criterion is a composite Mohr-Coulomb criterion with tension cut-off.Beyond the peak stress, the linear strain-softening constitutive relation is adopted. 峰值强度后的本构模型取为莫尔库仑剪破坏与拉破坏复合的应变软化模型。
- The theoretical equations for stress fields and the stress intensity factor have been derived. 推出了界面裂纹的应力场和应力强度因子的理论表达式。
- Fracture toughness (Kc).Critical value of the stress intensity factor for which crack extension occurs. 断裂韧度(Kc):发生裂纹扩展时应力强度因子的临界值。
- With the deep corrosion, the initial elastic modulus is much close to the secant modulus at the peak stress, and meanwhile the stress-strain curve tends to a tip shape. 随腐蚀加深,初始弹性模量和峰值应力时割线模量接近,压力-应变曲线形状变尖。
- Based on computing fracture tenacity of the rock and stress intensity factor of the formation, the fracture extending height will be predicted. 通过定量计算岩石的断裂韧度和地层的应力强度因子,便可预测压裂裂缝的延伸高度。