کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
279767 | 1430354 | 2008 | 17 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A numerical method for rapid estimation of drawbead restraining force based on non-linear, anisotropic constitutive equations A numerical method for rapid estimation of drawbead restraining force based on non-linear, anisotropic constitutive equations](/preview/png/279767.png)
Numerical procedures to predict drawbead restraining forces (DBRF) were developed based on the semi-analytical (non-finite-element) hybrid membrane/bending method. The section forces were derived by equating the work to pull sheet material through the drawbead to the work required to bend and unbend the sheet along with frictional forces on drawbead radii. As a semi-analytical method, the new approach was especially useful to analyze the effects of various constitutive parameters with less computational cost. The present model could accommodate general non-quadratic anisotropic yield function and non-linear anisotropic hardening under the plane strain condition. Several numerical sensitivity analyses for examining the effects of process parameters and material properties including the Bauschinger effect and the shape of yield surface on DBRF were presented. Finally, the DBRFs of SPCC steel sheet passing a single circular drawbead were predicted and compared with the measurements.
Journal: International Journal of Solids and Structures - Volume 45, Issues 11–12, 15 June 2008, Pages 3375–3391