MT-1620 al.2002 Stress-Strain (Do a similar procedure as in plane stress) 3 Primary 22 12 (8) Secondary 0 023 0 orthotropic (=0 for anisotropic) ≠0 INCONSISTENCY: No load along z, yet O33(o,) is non zero. Why? Once again, this is an idealization. Triaxial strains(E 33) actually arise You eliminate O33 from the equation set by expressing it in terms of OaB via (o33)stress-strain equation Paul A Lagace @2001 Unit 6-p. 13σ σ MIT - 16.20 Fall, 2002 Stress - Strain (Do a similar procedure as in plane stress) 3 Primary σ11 = ... (6) σ22 = ... (7) σ12 = ... (8) Secondary σ13 = 0 σ23 = 0 orthotropic (≠ 0 for anisotropic) σ33 ≠ 0 INCONSISTENCY: No load along z, yet σ33 (σzz) is non zero. Why? Once again, this is an idealization. Triaxial strains (ε 33) actually arise. You eliminate σ33 from the equation set by expressing it in terms of σαβ via (σ33) stress-strain equation. Paul A. Lagace © 2001 Unit 6 - p. 13