friction of rest
- friction of rest的基本解释
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静止摩阻, 静止摩擦, 静摩擦
- 相似词
- 更多 网络例句 与friction of rest相关的网络例句 [注:此内容来源于网络,仅供参考]
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In order to reasonably depict four basic problems with friction, one Coulomb friction new form in first Kirchhoff stress is proposed to deal with finite deformation problems, other Coulomb friction form in incremental mode to elastoplastic flow theory; Hilbert function spaces concerning elastoplastical problems with friction are established, so it makes all operations and calculations in the treatise standardized within the scope of reasonably topologic structure; In view of functional extremum, the equivalence between generalized variational inequalities principles in elastoplasticity with friction and corresponding basic problems are testified by inducing Lagrangian multipliers, so it provides a rationally theoretical basis for numerical methods in elastoplasticity with friction; From the viewpoint of variational inequality, the theory of generalized variational inequalities in elasticity and elastoplasticity with frictional constraint is studied, and the uniqueness and existence of the solution of FEM is proofed under the proposed conditions of stress compatibility, and them FEM approximation and a discrete solution are discussed; Based on the principles of generalized variational inequalities in elastoplasticity with friction, direct generalized variational inequalities methods is pretended, which is a natural generalization and development of direct variational methods; Using generalized variational inequalities methods, some examples in metal forming including plane deformation, upset and extrusion are analyzed and the results prove that all the theories and methods in the paper are right, feasible, accurate and advanced.
主要内容有:为了合理地描述金属塑性成形中摩擦约束弹性、弹塑性基本问题,提出和研究了有限变形下以Kirchhoff第一应力表示的Coulomb摩擦定律形式和弹塑性流动理论下以增量形式表示的Coulomb摩擦定律表示形式;系统建立了摩擦约束弹塑性问题的Hilbert函数空间,使本文规范在一个具有合理的代数拓扑结构内进行一切操作和运算;利用Lagrange乘子,从泛函极值的角度系统地阐述和论证了一系列摩擦约束弹性、弹塑性广义变分不等原理与相应的实际问题之间的等价性,它为处理摩擦约束的弹塑性力学数值方法提供了合理的理论基础;从变分不等式的角度出发,阐述了对应于摩擦约束弹性、弹塑性问题的广义变分不等式理论,首次提出了在应力相容性条件下,它的有限元解具有存在唯一性,进而讨论了其有限元近似及离散解法;基于摩擦约束弹塑性广义变分不等式原理,首次提出了直接广义变分不等式方法,这一方法是直接变分法的合理推广和发展;利用直接广义变分不等式方法对金属压力加工中的平面变形问题、镦粗、挤压等塑性成形问题进行了分析计算,验证了该理论和数值算法的正确性、实用性、精确性和优越性。
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Friction are many ways to fitness, with a dry towel friction body, known as "dry cloth friction"; with a soft brush friction, known as "brush friction"; with a cold towel wrung friction is called "cold-water friction"; also can be used "hand-rub the Law" and so on.
磨擦健身的方法很多,用干毛巾磨擦全身,叫作&干布磨擦&;用柔软的刷子磨擦,称为&刷子磨擦&;用拧干的冷毛巾磨擦叫&冷水磨擦&;此外还可以采用&手擦法&等等。
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The rule of dry sliding friction wear of vermicular iron was analyzed. The influence of working conditions, composition and structure on dry sliding friction characteristics was investigated, 3D morphologies of friction surfaces of vermicular iron and temperature characteristics of friction surface were discussed. The results showed that, compared with nodular and gray irons, vermicular iron has lowest wear rate, highest friction coefficient and lowest friction coefficient attenuation, so it is suitable to be as the material of braking device.
分析了蠕墨铸铁的干滑动摩擦磨损规律,研究了工况条件、成分、组织对蠕墨铸铁干滑动摩擦学特性的影响,探讨了蠕墨铸铁摩擦表面二维形貌与摩擦表面温度特性,结果表明:蠕墨铸铁与球墨铸铁和灰铸铁相比具有最低的磨损率和最高的摩擦系数与最低的摩擦系数衰减量,适合于作为制动器材料。
- 更多网络解释 与friction of rest相关的网络解释 [注:此内容来源于网络,仅供参考]
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v. rest for half an hour:休息十分钟 rest your eyes 让你的眼睛休息一下
a short rest of about ten minutes 一个约十分钟的短暂休息 | v. rest for half an hour 休息十分钟 rest your eyes 让你的眼睛休息一下 | pron. the rest of the students 其余的学生 the rest of his life 他的余...
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friction gear; friction wheel:摩擦轮
摩阻鼓 friction drum | 摩擦轮 friction gear; friction wheel | 摩擦马力 friction horsepower; skin horsepower
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Reibklotz friction block:磨擦块
Reibeinrichtung friction control device/friction facing 磨擦设备 | Reibklotz friction block 磨擦块 | Reibkoeffizient friction coefficient 磨擦系数