Civil and Environmental Engineering 2202A/B Lecture Notes - Lecture 10: Plane Stress, Infinitesimal Strain Theory
21 Nov 2018
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Document Summary
If you understand stress transformations, than that"s okay" Apply the mathematical methods we found to transform stress upon strain to develop. Develop important material-property relationships; including generalized form of. Discuss and use theories to predict the failiure of a material. A plane strain element is only subjected to two components of normal strain ( x, y) (not 3) and one component of shear strain xy. Because there may not be any strains out of plane, but there might be some stresses out of plane still. Therefore plane strain does not mean plane stress. Well that is the reason why plane strain and plane stress cannot occur simultaneously. Shear strains is positive when the 90 is getting smaller. In the final he is going to ask for the proof of the equations. He doesn"t care if you can use an equation, he just cares if you know where it came from.
