A new one-phase material model for the numerical prediction of critical material flow conditions in thixoforging processes
| Autor: | Mathias Liewald, Kim Rouven Riedmüller |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Dependency (UML) Shear thinning Materials science Mechanical Engineering Flow (psychology) Process (computing) Mechanical engineering Forming processes 02 engineering and technology Industrial and Manufacturing Engineering Material flow Shear rate 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Sensitivity (control systems) |
| Zdroj: | CIRP Annals. 68:293-296 |
| ISSN: | 0007-8506 |
| DOI: | 10.1016/j.cirp.2019.04.099 |
| Popis: | Thixoforging allows one-step forming processes of near-net shape components having excellent mechanical properties. However, the high sensitivity of thixoforging regarding process conditions requires precise modelling and determination of process related parameters. At the same time, simple numerical design proves challenging because of the inaccuracy of existing one-phase material models regarding the shear thinning flow behaviour of semi solid metals. Consequently, this paper deals with the development of a new one-phase material model providing a more precise simulation of materials’ shear rate dependency. By using this model, simulations could be performed, which allowed the prediction of solidification and flow-related component defects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect