用幂级数研究无横向支撑梁屈曲

Research into the buckling of no crosswise supporting beam by using power series

推导出狭长截面梁屈曲时临界载荷公式，并对截面扭转角函数提出新的表达式．通过选用几种函数的分析，结果表明，该方法方便适用，其解有足够精确性．

This paper derives the formula calculating critical load of cantilever beams with long and narrow cross section,represents new formulation for twist angle function of the cross section. Analyzing results show that this method is available and has enough precision.