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[交流]
【交流】【探讨】谁能给解释下dynamics和kinetics的区别啊？
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动力学这词我见过两个 dynamical ------ kinetic 有什么区别啊？没有？ [ Last edited by GrasaVampiro on 2009-4-1 at 09:02 ] |
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dynamics分析过程的时间演化,[运]动力学 kinetics动[态]力学,分析运动与引起运动的力的关系， 20世纪一来，前者基本取代了后者 In physics and engineering, kinetics is a term for the branch of classical mechanics that is concerned with the relationship between the motion of bodies and its causes, namely forces and mass.[1][2][3] Since the mid-20th century, the term "dynamics" (or "analytical dynamics"  has largely superseded "kinetics" in physics text books[4]; the term "kinetics" is still used in engineering. For example, according to Rao et al.:[5]The relation between the external forces and their kinematic variables is popularly known as kinetics. … We examine the external mechanical agencies that cause the motion.…The motion of a rigid body consists of rigid translations as well as rotations. Each of these kinematic variables will now have to be related to their respective kinetic variables. The kinetic quantities associated with translations are forces and the kinetic quantities associated with rotations are moments or torques. – Rao, Lakshminarasimhan, Sethuraman & Sivakumar , Engineering Mechanics: Statics and Dynamics (2003), p. 175 The term kinetics is also used in a sense akin to chemical kinetics, particularly in chemical physics and physical chemistry.[6][7][8][9][10] In such uses, a qualifier is often used or implied, for example: "physical kinetics", "crystal growth kinetics", and so on. 以上根据wiki kinetics的counterpart是statics，静[止]力学，分析静止物体的受力 |
4楼2009-04-01 16:01:28
5楼2009-04-01 20:22:01
6楼2009-04-02 08:25:38
