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- Plastic blunting of crack tip 裂纹尖端塑性钝化
- The more energy is needed to produce delamination crack, the three-dimensional constraint of crack tip decreases, the effective thickness decreases or main crack tip is blunt. 在断裂过程中产生分层裂纹需要消耗更多的能量、降低裂端三维应力约束、有效厚度降低或裂尖钝化。
- Using theory of electro-thermal effects, tests of crack arrest were executed on gunsteel.And microstructure in crack tip was analyzed. 利用材料的电热效应对炮钢进行裂纹止裂实验,并对裂纹尖端材料进行金相组织分析。
- Numerical calculation results indicate that the motion parameter of crack propagating speed has little effect itself on zone structure at crack tip. 数值计算结果表明，运动参量裂纹扩展速度本身对裂尖场的分区构造影响很小。
- By comparing fatigue crack with electrosparking crack, the effects of crack tip on fracture toughness of ductile iron have been studied. 通过开疲劳裂纹和线切割裂纹的对比试验，研究裂纹尖端的尖锐程度对球墨铸铁断裂韧性的影响；
- After that , we make with CDF drawing by interrelated formula and simulate the model of X56 pipeline with surface crack by finite element software ANSYS, then, we compute J integral of crack tip . R阻力曲线确定热影响区和焊缝金属分别具有的断裂韧度,根据相关的公式做出CDF评定图,应用有限元软件ANSYS模拟含表面裂纹的X56海底管线模型,并计算裂纹尖端的二维J积分值。
- With the method of accumulation in the gray theory, a group of experiment data of crack tip opening displacement (CTOD) at different temperatures was accumulated two times, and then the data became a smooth curve. 摘要把不同温度下的裂纹张开位移(CTOD)试验数据，用灰色理论中的累加方法，进行二次累加。
- A stiffness matrix of hybrid crack tip element is presented based on the modified variational principle with relaxed continuity requirements and the stress and displacement fields of crack tip zone. 根据放松了连续性要求的修正势能原理及裂纹尖端的应力、位移场，推导了杂交单元的单元刚度矩阵。
- This thesis provides a new method to measure the opening loading of fatigue crack That using ultrasonic testing detects echo of crack tip is similar result to general method for use strain gage. 本文也提供了另一量测开口荷重的方法，利用超音波检测技术，将它应用于疲劳裂缝开口荷重的量测，从量测的结果可发现荷重与裂缝尖端的回波变化与一般量测开口荷重的方法有相似的结果。
- UNIFIED SOLUTIONS OF CRACK TIP PLASTIC ZONE UNDER SMALL SCALE YIELDING 小范围屈服条件下裂尖塑性区统一解
- Nonlocal Inelastric Damage field of Crack Tip 裂尖非局部非弹性损伤场
- Damage analysis of crack tip zone in metal sheets 金属板材中裂纹尖端区的损伤分析
- The stress field of crack tips of linear elastic orthotropic composite plates under the acts of bending and torque is analyzed. 摘要对受弯矩、扭矩混合作用的线弹性正交异性复合材料板的裂纹尖端应力场进行探讨。
- Effect of Triaxial Stress on the Plastic Zone Distribution in Front of Crack Tip with Mixed Mode Loading 三轴应力状态下复合型裂纹尖端前缘的塑性区分布
- Experiments ind-icate that the ductile-brittle transition phenomenon is closely associated with the mechanismof crack propagation and the crack tip blunting capacity. 应用扫描电镜观察了裂纹扩展的机制,发现结构钢低温韧脆转变现象的发生与裂纹塑性钝化的程度有直接关系,表现在延伸带的宽度发生很大的变化。
- It doesn't have the side-effects of crack cocaine. 它可没有高纯度可卡因那样的副作用。
- The paper analyzed three-dimensioned stress state of cracking tip for strech slab by method of finite element based on software ANSYS and gained the distributional discipline of stress for cracking tip of steel structure. 利用ANSYS软件对受拉平板缺口尖端三维应力状态进行了有限元分析，获得了钢结构缺口尖端的应力分布规律。
- He asked the dealer for a nickel of crack. 他找毒贩要价值五美元的可卡因药丸。
- It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-induced martensite would reinforce it. 室温蠕变对裂纹扩展产生延滞的原因主要是裂纹闭合,同时裂尖钝化、裂纹偏折及形变诱发马氏体的形成也会起到一定的作用。
- There was no blunting of anterior tympanomeatal angle in the interlay group. 在保持鼓膜前下锐角和锥形方面，夹层法亦优于内植法。
