Three types of four-parameter strength criterion based on new mechanical model are proposed.
在新的力学模型上建立了三种类型的四参数强度准则。
The general criterion of potential mechanical system is then presented.
然后提出力学系统有势的一般判据。
Mechanical model for pile-driving is presented according to the soil deformation behavior and yielding criterion of structural soft soils.
根据结构性土体的变形特征和屈服准则，建立打桩力学模型。
There is a macro-crack and micro-crack system in rocks, which affects almost all the mechanical properties of rocks, especially the failure mechanism and the strength criterion.
岩石内部存在一个宏观的和微观的裂隙系统，岩体的一切力学特性几乎都与这个裂隙系统有关，当然岩体的破坏机理与强度准则也不例外。
This paper briefed chemical composition, microstructure, mechanical properties, resistant corrosion and workabalities of stainless steel C15. The criterion for its application was provided.
扼要地介绍了C15不锈钢的化学成分、显微组织、力学性能、耐腐蚀性能和加工性能，为选材应用提供了判据。
Second, a criterion of the stability of relative motion for the nonholonomic mechanical systems was obtained by using the equation of variation of energy.
其次，基于能量变化方程，给出了非完整力学系统相对运动的稳定性的一个判据；
The statistical damage mechanical essence of the stress-strength ratio criterion is discovered on the base of the data from a SW deep lying tunnel.
进而提出采用平行杆模型模拟洞室围岩，以西南某深埋隧洞为例，推出了岩爆应力强度比判据分界点的统计损伤意义。
The load rate K is an important Parameter in describing the mechanical vibration on human body. It is also used as a quantitative control criterion.
负荷率K是描述人体承受机械振动的一项重要参数，也用作定量控制的一种标准。
In this paper, the mechanical model of positive-negative formation for revolving shell is analyzed, the classification method is given according to the stress yield criterion.
本文分析了回转壳体正负成形的力学模型，基于应力屈服条件对回转壳体的变形进行了分类；
Single mechanical seal : simple in structure, good sealing performance, long life, easy to maintain (meet the criterion of ISO3069).
单端面机械密封：结构简单，密封性能好，使用寿命长，维护方便（符合ISO3069 标准）。
Impeller balance : impeller meets the criterion ofISO1940-2000, G6.3-level to calibration balance, little vibration, greatly improve the life of bearing and mechanical seal.
叶轮平衡：叶轮按ISO1940-2000，G6.3 级校准平衡，运行时振动小，大大提高了轴承和机封的使用寿命。
On the second place, detailed analysis was implemented for the pipe end deformation process during mechanical expanding, and forming criterion was also obtained.
详细分析了管端机械扩径的变形过程，总结了机械扩径成形条件；
Moreover, the author proposed "damage degree" as a criterion in obtaining the optimum structure parameters. A relationship between the optimum design of mechanical elements and r…
为了寻求零件最优的结构参数，作者引入损伤度作为判据，建立了零件优化设计与随机疲劳寿命的联系。
Moreover, the author proposed "damage degree" as a criterion in obtaining the optimum structure parameters. A relationship between the optimum design of mechanical elements and r…
为了寻求零件最优的结构参数，作者引入损伤度作为判据，建立了零件优化设计与随机疲劳寿命的联系。
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