Dynamic modeling of powder compaction processes via a simple contact algorithm

作者：Khoei A R^*; Biabanaki S O R; Parvaneh S M

来源：International Journal of Mechanical Sciences, 2012, 64(1): 196-210.

DOI：10.1016/j.ijmecsci.2012.07.001

• Powder compaction
• Dynamic FEM
• Contact friction
• Node-to-surface algorithm
• Cap plasticity
• Large deformation

In this paper, the dynamic modeling of powder compaction processes is presented based on a simple contact algorithm to evaluate the distribution of final density in dynamic powder die-pressing. The large deformation frictional contact is employed by imposing the contact constraints via the contact node-to-surface formulation and modifying the contact properties of frictional slip. The Coulomb friction law is used to simulate the friction between the rigid punch and the work-piece. The nonlinear contact friction algorithm is employed together with a double-surface cap plasticity model within the framework of large FE deformation in order to predict the non-uniform relative density distribution during the dynamic simulation of powder die-pressing. Finally, the numerical schemes are examined for accuracy and efficiency in modeling of a set of powder components.

• 出版日期2012-11