MT-1620 al.2002 Recall the definition of stress o= stress= intensity of internal force at a point Figure 3.1 Representation of cross-section of a general body →Fn △F Stress=im\△A △A→0 There are two types of stress on(fn1. Normal (or extensional): act normal to the plane of the element os( Fs) 2. Shear: act in-plane of element Sometimes delineated ast Paul A Lagace @2001 Unit 3-p. 2MIT - 16.20 Fall, 2002 Recall the definition of stress: σ = stress = “intensity of internal force at a point” Figure 3.1 Representation of cross-section of a general body Fn Fs  ∆F Stress = lim  ∆A ∆A → 0 There are two types of stress: • σn (Fn) 1. Normal (or extensional): act normal to the plane of the element • σs (Fs) 2. Shear: act in-plane of element Sometimes delineated as τ Paul A. Lagace © 2001 Unit 3 - p. 2