© 平面应力(plane stress) 8w=(aowd,/a。=-10 ot8o(6Φw-日o) Z(0:)米 衍射晶面法线 X(Ox) eΦψ=[(1+v)/E](OxCOS2Φ+txysin2Φ+oysin2Φ)sin2中-(v/E)(ox+oy) 材料科学与工程学院 3 School of Materials Science and Engineering材料科学与工程学院 School of Materials Science and Engineering 平面应力(plane stress) 3 衍射晶面法线 𝜀Ф𝜓 = (𝑑Ф𝜓−𝑑𝑜)/𝑑𝑜 = − 𝜋 180 𝑐𝑜𝑡𝜃𝑜(𝜃Ф𝜓 − 𝜃𝑜) 𝜀Ф𝜓= (1 + ν )/𝐸 (𝜎𝑥𝑐𝑜𝑠2Ф + 𝜏𝑥𝑦sin2Ф + 𝜎𝑦𝑠𝑖𝑛2Ф)𝑠𝑖𝑛2ψ –(ν/𝐸) (𝜎𝑥+𝜎𝑦)