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- In the thesis, the fragmentation prediction is based on the mechanism of brittle fracture of rock, on which a fractal model of fragment evolution is proposed. 本文根据岩石破裂过程分形脆性断裂机理建立块度分形演化模型,并将其应用于节理岩体块度预测。
- The fractal dimensions of brittle fracture of rock are related to test conditions such as confining pressure and strain rate, and this reflects the difference of brittle fractured mechanism of rock. 在不同的围压和应变率下,岩石脆性破裂的分维值各不相同,体现了岩石脆性断裂机制的差异性。
- Crazing is the invariable precursor of brittle fracture. 出现小裂纹必然是脆性断裂的前兆。
- The cause of brittle fracture on power hacksaw blades-blank were analyzed. 检验分析了机用锯条坯脆断的原因。
- Consequently, the improved connection details, widened flange and no weld access hole detail, efficiently decrease the potential of brittle fracture. 因此,采扩翼型式与无扇形焊接开孔之接合细节可有效降低梁柱接面发生脆性破坏之可能性。
- Abstract: The inertial effect of three-point bend specimens under impactloading was analyzed by using the spring-mass system model and an expression for the correction of inertial force was obtained under the condition of brittle fracture of materials. 文摘:用弹簧质量模型分析了三点弯曲试样在冲击载荷作用下的惯性效应,得到了脆性断裂条件下有效载荷的修正公式。
- The toughness experiments indicate that the fracture of macro-structure of the austenite-bainite ductile cast iron is of brittle fracture, while the fracture of micro-structure is of mainly ductile fracture with dimple appearance. 韧性实验表明:奥氏体-贝氏体球铁的断口,宏观结构呈脆性断口,微观结构呈韧性断口,即主要形成韧窝断口。
- The inertial effect of three-point bend specimens under impactloading was analyzed by using the spring-mass system model and an expression for the correction of inertial force was obtained under the condition of brittle fracture of materials. 用弹簧质量模型分析了三点弯曲试样在冲击载荷作用下的惯性效应,得到了脆性断裂条件下有效载荷的修正公式。
- The results showed that the dispersed phase of PA6/ABS simple crossblend system congregated easily, the fracture surface exhibited rock sandwich, it was typical appearance of brittle fracture. 结果表明,PA6和ABS的简单共混体系的分散相容易聚集,断裂面呈岩石层状的脆性断裂形貌。
- Prevention of Brittle Fracture of Pressure Vessels 压力容器的脆裂防护
- Carbon steels and certain ferritic alloys, for example, are subject to the risks of brittle fractures when tested at winter ambient temperatures. 在冬季环境温度条件下进行压力测试时,碳钢和某些铁合金便有可能发生脆裂的危险。
- Late period of deformation is characterized by cataclasis and breakage forming varied sorts of brittle fractures and breccia zones. 晚期变形作用以碎裂和破裂机制为主,形成各种脆性裂隙和角砾岩带。
- Analysis of Brittle Fracture Cause of Steel Wire for Cement Pipe 水泥管用钢丝脆断原因分析
- The test results are helpful to more understanding of the failure mechanism of brittle materials including PMMA and also to the study of the failure mechanism of rock under loading. 这一研究加深了对有机玻璃材料(PMMA)等透明脆性材料破坏机制的了解,同时对岩石材料破坏机制的研究也大有裨益。
- The mechanics of staging a play are very complicated. 排演话剧的过程很复杂。
- crazing is the invariable precursor of brittle fracture 出现小裂纹必然是脆性断裂的前兆。
- The mechanism of brittleness of the alloy has been discussed. 对硬质含金脆性机理进行了探讨。
- Maximum circumferential stress criterion of brittle fracture for V-notch V型切口脆性断裂的最大周向应力准则
- He has natural ability, but has yet to learn the mechanics of his chosen work. 他很有天分,但对选择的工作该怎样处理,他仍得好好学习。
- He grasped the mechanics of play-writing. 他掌握了剧本的写作技巧。