论文部分内容阅读
本文对《统一无缝线路稳定性计算公式》的某些理论问题及其应用,进行了研讨。作者在文献[1]的讨论过程中,从文献[1]原计算中所采用的 f_(o?)=f_(op)=l~2/(8R_0)这一为人忽视而又极为简单的条件式出发,首先提出了可以不经过试算而直接解算半波长 L 的算式,本文写出的 L 计算式,可为公式的实际应用提供便利。本文还通过抛弃曲率为常量的假定,导出了正弦形原始弹性弯曲半波长 L 与量测弦长 L_0之间的关系式,从而有可能使我们在推导《统一无缝线路稳定性计算公式》的前提条件中,抛弃初始弹性弯曲 y_=f_(oc)Sin(πx/l_o≈f_(oe)Sin(πx/l)的不合理假定,使得这个长期为人探求的问题有了解决的可能,具有理论上的启发意义。本文还对原始弯曲中包含弹性与塑性弯曲这一假定进行了分析和试算,证明了只有采用完全塑性弯曲作为原始弯曲,才能得出最小的临界温度压力值。
In this paper, some theoretical problems and their applications of “unified stability calculation formula of seamless line” are discussed. In the discussion of the literature [1], the author neglected and extremely simple condition, f_ (o?) = F_ (op) = l ~ 2 / (8R_0) First of all, we first propose a formula that can solve the half-wavelength L directly without trial calculation. The formula of L written in this paper can be used to facilitate the practical application of the formula. In this paper, by deducting the curvature as a constant hypothesis, derived the sine of the original elastic bending half-wavelength L and measured chord L_0 relationship between the formula, which may make us derive the “unified seamless line stability formula” , Abandoning the irrational assumption that the initial elastic bending y_ = f_ (oc) Sin (πx / l_o≈f oe) Sin (πx / l) makes this long-term problem of human exploration possible to solve, Theoretical enlightenment significance.This paper also analyzes and tests the assumption that the original bending includes the elastic and plastic bending, and proves that the minimum critical temperature and pressure can be obtained only by using the complete plastic bending as the original bending.