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- critical crack extension force 临界裂缝扩展力
- Based on the boundary variational theorem, the energy release quantity and energy release rate(dynamical crack extension force)along the crack boundary are obtained. 由此求得动态裂纹扩展时，沿裂纹边界的能量释放量和能量释放率(动态裂纹扩展力)。
- Keywords crack extension force;beams（supports）;stress intensity factors;construction materials;DCB specimen;root effect;energy release rate; 裂纹扩展力;梁;应力强度因子;结构材料;DCB试样;根部效应;能量释放率;
- crack extension force 裂纹扩展力
- Critical Crack Size and Crack Arrest. 临界裂纹尺寸、及裂纹阻止。
- Under static force,this paper studies the influence of the stacking sequence on the crack origination and crack extension of the modified BMI -DPA matrix material. 本文以自制的烯丙基双酚A改性双马树脂 (BMI DPA)为基体材料 ,采用无切口矩形试件 ,研究静载下铺层顺序对基体裂纹的起始及裂纹扩展的影响。
- No evidence of fatigue crack extension was detected in the silver Memorial Bridge nor the Fremont Bridge. 在西尔费纪念桥和弗里蒙特桥都没有检查出疲劳裂纹扩展的证据。
- Some crack extension probably developed from the unfused section of the butt weld across the thickness of the stiffener during transport and erection. 有些裂纹可能在运输和安装过程中就从加劲肋对接焊未熔透处开始发展。
- The temperature field,stress,critical crack size as well as the interior quality of the rolls are presented. 介绍了该类轧辊的温度、应力状态、临界裂纹尺寸及内部质量情况。
- A cricket critic cracked his neck at a critical cricket match. 板球评论家在一场关键的板球比赛中折断了他的脖子。
- The specimens were found to emit strongly above a 35dB threshold when stable crack extension started at K 1C. 稳态裂纹扩展起始于K1C并发射出许多幅值超过阈值 35dB的信号。
- 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。
- The study shows that the effects of stacking sequence are significant on crack origination, crack extension rate, fracture toughness and crack density. 研究发现不同铺层顺序不仅影响基体裂纹的起始载荷、扩展速率、断裂韧性，也将对基体裂纹的饱和裂纹密度产生极大的影响。
- In this paper,a calculation for critical crack on side bar is also made, in addition to deduction on bar's running life after the appearance of initial crac... 同时计算出侧杆的临界裂纹及初始裂纹存在时的侧杆运行寿命,并提出在以后的检修中避免发生侧杆断裂的对策。
- To study the mechanism of crack extension by hyduaulic fracturing,the mass hyduaulic fracturing experiments are carried out in granodiorite at Fangshan District,Beijing,China. 水压致裂测试技术起源于石油的增产,现已发展成为测量地壳应力的一种有效方法。
- To study the mechanism of crack extension by hyduaulic fracturing, the mass hyduaulic fracturing experiments are carried out in granodiorite at Fangshan District, Beijing, China. 为研究水压致裂过程中裂缝的扩展机制，在北京市房山区花岗岩体中开展大流量水压致裂试验。
- The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction. 根据扫描断口形貌和裂纹扩展途径的金相观察,还探讨了在混合溶液中的应力腐蚀机制。
- There was extensive force on the neck and right leg plus a deep gash at the right knee of the dummy in the minicar. 有广泛的力量的脖子和右腿加上深加什在右膝盖的假人在微型。
- The parametrization philosophy behind the force field focuses onquality at the expense of transferability, with the implementationconcentrating on an extensible force field. 文中给出了参数质量的统计结果，重点放在了实验验证上。
- In order to study the mechanism of crack extension by hyduaulic fracturing, the mass hyduaulic fracturing experiments were carried out in granodiorite rockmass at Fangsan, Beijing, China. 为了研究水压致裂过程中裂缝的扩展机制,在北京房山花岗岩体中开展了大型水压致裂试验。
