Abstract
The square grid deformation approach is generally employed to forming processes solved with the aid of slip-line field in which a ductile body is supposed to be made with arrays of square grids of finite sizes before the deformation process. After the application of the load, as the deformation occurs, square grids are deformed. The square grid deformation has three utilities—(1) visualization of actual deformation process, (2) prediction of trajectory at any point and (3) computation of strain. The theory of square grid deformation mathematics was originally developed by Hill considering the linear formation of the lip. The present work develops a new mathematical approach for deformation of square grids considering a parabolic lip formation when a rigid wedge is gradually indented to a ductile block of semi-infinite size.
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