کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
782563 | 1465016 | 2012 | 15 صفحه PDF | دانلود رایگان |
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.
► The dynamic FE simulation is performed for powder compaction processes.
► A simple contact algorithm is presented for dynamic powder die-pressing.
► The large deformation frictional contact is employed in the compaction process.
► A double-surface cap plasticity model is appled into the large FE deformation.
► The relative density distribution is obtained in dynamic powder die-pressing.
Journal: International Journal of Mechanical Sciences - Volume 64, Issue 1, November 2012, Pages 196–210