Abstract. Micro scale manufacturing technologies have been a productive area of research due to the increase in miniaturization in various industries. However, most of the know-how in conventional metal forming processes cannot be readily transferred into micro/meso forming processes due to the size effect. By incorporating the length scale into the formulation, strain gradient theories offer a viable solution to the issues arising from size-dependent complications. This paper aims at implementing a lower-order strain gradient plasticity (SGP) theory developed from the Taylor dislocation model to numerically analyze the impact of the plastic size effect on the forming of metallic materials. The material model together with local and nonlocal approaches for the strain gradient calculations is implemented in a commercial finite element (FE) code through user subroutines. The flat punch indentation problem is examined using the implemented code.
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