在材料力学教学中有关压杆截面设计问题,大多采用了试算的办法,经过几次反复的核算才能求得满意结果,使问题变得繁琐。本文“压杆截面设计的图解解析法”舍弃了试算中的重复设计过程,一次便得到满意的结果。1.方法的提出图1给出了几种材料的临界应力总图。其中,压杆的柔度为: In the teaching of material mechanics about the design of the cross-section of the bar, most of them adopted the method of trial calculation. After several repeated accounting, satisfactory results could be obtained, which made the problem complicated. In this paper, the “graphical analysis of the design of the compression rod cross section” discarded the repeated design process in the trial calculation, one will be satisfied with the results. 1. Method Proposed Figure 1 shows the critical stress diagram of several materials. Among them, the pressure bar flexibility is: