无返回力矩钟表机构动力学研究  

A Study on the Runaway Escapement Dynamics

作　　者：陆文广[1] 芮筱亭[1] 陆毓麒[1] 顾金良[1] 

机构地区：[1]南京理工大学动力工程学院,江苏南京210094

出　　处：《兵工学报》2005年第3期401-404,共4页Acta Armamentarii

基　　金：国防科学技术奖三等奖 (2 0 0 1GFJ3 469-4 )

摘　　要：为克服传统模型的缺陷,建立了无返回力矩钟表机构“自由—接触”动力学模型和在自由和接触两个阶段具有相同形式的动力学方程,结合Crossley公式对传冲过程进行了较精细的描述,并以M 739为例进行了数值仿真,再现了“二次碰撞”现象,为无返回力矩钟表机构动态设计、故障分析提供了一种有效的数值仿真方法。In order to overcome the limitation of a traditional model, a ‘free-contact’ dynamic model of runaway escapement and the dynamic equations which have the same form during the ‘free’ state and the ‘contact’ state were established in this paper. With the help of the Crossley equation, contact between the pallet and escape wheel was precisely described. A simulation on the clock mechanism of M739 was made. The results reveal the phenomenon of ‘the second impact’ known experimentally. An effective digital simulation method was provided for the dynamic design and failure analysis of runaway escapement.

关 键 词：机械学 无返回力矩钟表机构 动力学模型 数值仿真 

分 类 号：TJ43[兵器科学与技术—火炮、自动武器与弹药工程] O313[理学—一般力学与力学基础]