“非零应矩弹性理论”下的压杆稳定  

On the Rod Stability Based on Non-zero Point Force Moment Elasticity Theory

作　　者：念红芬[1] 黄双华[1] 韩文坝[1] 

机构地区：[1]攀枝花学院,四川攀枝花617000

出　　处：《攀枝花学院学报》2016年第2期16-19,共4页Journal of Panzhihua University

摘　　要：现行弹性理论认为:"作用在单位面积上的力矩恒等于零",与应力理论下的压杆稳定公式,都无法解决工程上的扭转和弯曲不平衡问题。本文利用"非零应矩弹性理论,推导了应矩理论下的压杆稳定临界力新公式。并用应力、应矩两种理论,对压杆稳定实例进行对照计算,来论证现行欧拉压杆稳定临界公式的不安全性。The current elasticity theory holds that ＂the moment of the action in the unit area is equal to zero＂,and the stability formula of the pressure bar under the stress theory are unable to solve the problem of torsion and bending in engineering.In this paper,a new formula for the stability critical force of the pressure bar is derived by using the theory of non-zero moment elasticity.And two kinds of theory of stress and moment are used to calculate the stability of the pressure bar and then to demonstrate the instability of the current Euler pressure bar stability critical formula.

关 键 词：压杆稳定 弯矩 柔度 临界力 欧拉公式 

分 类 号：O343[理学—固体力学]