# - 1 Stress Calculation ■ First the global equilibrium equation KD = R is solved for D Then ◆ nodal dof d is available from D ◆ element

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Stress Calculation ■ First the global equilibrium equation KD = R is solved for D . Then, ◆ nodal dof d is available from D , ◆ element stresses are computed from σ = EBd + σ . ◆ This is done for every element individually . ◆ Software usually report stresses in local (i.e., element ) coordinates but should check software documentation. ■ There is an issue here: In general, B =f(x,y) ! ◆ Where in the element to compute the stresses? ✦ Stresses are usually more accurate within an element than on its boundary but we may be more interested in boundary stresses because they are usually larger there. ✦ So, it is better to calculate stresses at certain points (Gauss points) within the element and then to extrapolate from these. 2 Example on Stress Calculation 2a 2b Prob. 3.10: Given: u 1 =u 3 =-c, u 2 =u 4 =c ; c is a constant. v i =0 Find strains and stresses in the element....
View Full Document

## This note was uploaded on 06/06/2011 for the course EAS 4240 taught by Professor Peterifju during the Spring '08 term at University of Florida.

### Page1 / 10

- 1 Stress Calculation ■ First the global equilibrium equation KD = R is solved for D Then ◆ nodal dof d is available from D ◆ element

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online