Taking beam with rectangular section as an example , the corresponding analytical solution of beam subjected to cosine distribution pressure is given through constructing the stress function satisfying all boundary conditions and biharmonic equation , which is a base of beam subjected to arbitrary distribution pressure 摘要以矩形截面簡支梁為例,通過構(gòu)造一個滿足所有邊界條件和雙調(diào)和方程的應(yīng)力函數(shù),給出了梁受余弦分布力作用情況下相應(yīng)的解析解,這為求解梁受任意分布壓力作用下解的問題打下了基礎(chǔ)。