摘要
本文给出变截面杆轴向拉压应力的精确解答，并与材料力学的近似解答相比较，进行了误差分析．从而给出材力近似解在工程中的适用范围，为工程计算提供可靠设计依据．
This peper gives the aeeuracy answer of axial compressive and axial tension ofvarying-arca lever, and compared with the approximate answer of mechanics of materials of it.analysed the error. So,gives the range of applicability of approximate answer in engineering. offered the reliable basis for engineering calculating
关键词
轴向拉压
变截面杆
精确解
杆件结构
应力
axial compressive and axial tension,varying-arca lever,accuracy answer
