查询词典 classical mechanics

A precise background theory of computational mechanics is formed. Saint-Venant's principle is discussed in chain model by means of this precise theory. The classical continued fraction is developed into operator continued fraction to be the constrictive formulation of the chain model.

用泛函分析的双空间理论为计算力学构造了一个严密的背景理论，以此在链式模型上讨论圣文南原理，同时将传统的连分数扩展为算子连分式作为链式模型的本征关系式。

Comparing with classical viscoelastic models, fractional derivative models describe not only the constitutive of viscoelastic material and the related mechanics properties accurately in wide range, but also need less model parameters.

分数导数模型与其他经典模型相比不但能够精确地描述粘弹性材料的本构关系及其力学特性，而且确定模型所需实验参数少、能够在较宽的频率范围内描述材料的力学行为。

In chapter six, A finite element model to evaluate the mechanics properties of thin wall structure is put forwards. The 4-node quadrilateral Hughes-Liu shell element with five through-the-thickness integration points is employed. The material is assumed to satisfy the elastic-plastic yield condition with isotropic hardening. The single surface contact algorithm is taken to deal with the contact searching. The priori stabilization procedures for the numerical control of the hourglass instability and the penalty method for the evaluation of contact force are used. The classical Coulomb law of friction is employed to evaluate the friction force.

第六章采用法向方向5点积分的4节点Hughes-Liu壳单元，前置参数法砂漏控制技术，等向强化弹塑性材料模型，分步增量应力回映方法，一体化接触搜寻算法，罚参数接触力计算方法及经典摩擦定律，建立了一种计算受冲薄壁结构大变形力学特性计算的有限元模型，通过对汽车A传动轴及汽车纵向方形吸能梁的大变形力学特性分析，验证了该有限元模型的正确性。

The classical Eshelby formalism (Eshelby,1957), which does not include the interface stress, is landmark work in mechanics of the 20th century, and it is regarded as one of the cornerstones of micromechanics.

经典的Eshelby体系(Eshelby formalism， 1957)是20世纪固体力学领域一项奠基性的工作，被认为是如今蓬勃发展的细观力学的基石之一。

Based on classical theory of mechanics, analytical procedure was developed to predict initial stiffness, plastic stiffness and plastic ultimate moment capacity of top-and-seat angle minor axis connections.

根据本文的理论计算结果，使用三参数幂函数和指数函数两种数学模型模拟了钢框架梁柱弱轴顶底角钢连接的弯矩—转角曲线，理论分析得出的数学模型和试验结果吻合较好。

According to the combination of the classical friction theory based on Newton geostatic and Eulers formula and modern dynamics analyses of belt conveyor, this paper put up particular mechanics analyzing toward unsteady predicament of belt conveyor.

本文基于牛顿刚体力学、欧拉公式为基础的经典摩擦传动理论和现代输送机动态分析相结合的方法，对于带式输送机的非稳定状态进行了详细的力学分析。

This is Einstein 10 years of deliberation and exploration results, which in the 19th century to a large extent solved the crisis of classical physics, Newtonian mechanics changed the concept of space-time, it has exposed the considerable material and energy, the creation of a new world of physics, modern physics is the greatest revolution.

这是爱因斯坦十年酝酿和探索的结果，它在很大程度上解决了19世纪末出现的古典物理学的危机，改变了牛顿力学的时空观念，揭露了物质和能量的相当性，创立了一个全新的物理学世界，是近代物理学领域最伟大的革命。

Based on the interactions of neutron and matters, we calculate the neutron index either from the standpoint of wave or classical particle mechanics as the scattering amplitude can be easily related to the actual potential well producing the scattering.

基于中子与物质相互作用的机理，考虑到实际应用的低能中子的特性以及中子的波粒二相性，从量子力学的角度出发，得出了物质的散射长度和吸收截面与材料对中子的折射率之间的关系。

With its subdiscipline, quantum mechanics, it exploded the basic tenetsof classical physics.

原子物理学利用其分支量子力学，打破了经典物理学的基本原则。

As done in classical fracture mechanics, a circumferential crack with macroscopic geometrical dimensions is necessary, mean while setting energy release ratio as a control parameter of delaminate fracture.

即，假设在环向存在具有宏观尺寸的贯穿裂纹，环向变形作用相当于弹性基础上的梁。并以能量释放率作为断裂研究的控制参量。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。