Flow Stress Models Analysis for Metal Powder Forming Simulation

Abstract:

Powder forming process can produce parts with homogeneous and satisfactory mechanical properties. Based on the assumption that the powder system is a compressive continuous material, the flow stress models used in powder forming were analyzed. The correspondent elasto-plastic constitutive model was derived from the yield criterion. Appropriate algorithm and mechanical models were applied. The program was developed and three-dimensional simulations for the powder compaction process of the iron matrix powder were performed. Effects of different flow stress models on simulation results were analyzed.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 2331-2335
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.2331
• Online since: May 2013
• Authors: Ming Jun Liu, Hua Ping Chen, Jun Xia Jiang
• Keywords: Constitutive Model, Ellipsoidal Yield Criterion, Flow Stress Model, Powder Forming

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