Through the mechanical analysis, the differential equation for the longitudinaldeformation of cold forming steel is derived, and the formula for longitudinal rotation Angle is obtained.
According to the results, during of the axisymmetry deformation, longitudinal anisotropy and transversal isotropy of polycrystal were obvious with the effective strain increasing.
结果表明,在轴对称变形过程中,随着等效应变的增加,多晶织构显现出明显的横观各向同性及纵向各向异性。
3
Mathematical expression of longitudinal transient deformation of tyre tread imprint under motion condition has been derived.