9-1、概述 杆件基本变形下的强度条件 F N. max (拉压)Om= (正应力强度条件 (弯曲)σn=-m≤|l Oma so FS (弯曲)7 max ≤[z] bⅠ 2 (切应力强度条件 (扭转)mWp T ≤[z 2021/2/192021/2/19 2 [ ] ,max max = A FN (拉压) [ ] max max = W M (弯曲) (正应力强度条件) [ ] * max = z s z b I F S (弯曲) (扭转) [ ] max = W p T (切应力强度条件) [ ] max [ ] max 1. 杆件基本变形下的强度条件 9-1、概 述