【摘要】 采用数学工具,在不忽略任何高阶微量的基础上,修改原有近似的挠曲线方程,推导出更精确、更符合实际的方程式.通过有限元法验证该方程的可靠性,结果表明:传统的计算方法误差较大,且误差随着梁的跨度、横截面、荷载大小、抗弯刚度变化而变化;文中方法得到的误差较小.更多还原

【Abstract】 Using mathematical tools,without neglecting any high-order infinitesimals,the existed approximate deflection equation is modified,a more accurate and realistic equation is derived.The reliability of the equation is verified by finite element method.The results show that the traditional calculation error is obvious,the error varies for different the beam spans,cross sections,the values of the load and bending stiffness,the error of presented method is small.更多还原