SINTER
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| Update History: V11 - SINTER has been introduced. | Last updated on : 24-07-2013 |
SINTER Material, SinterType, Ndata
Para(1), … , Para(Ndata)
| OPERAND | DESCRIPTION | DEFAULT |
|---|---|---|
| Material | Material number | None |
| SinterType | Type of sintering driving force model = 0 None = 1 Simple elastic one step = 2 Skorohod = 3 Cocks = 4 Shinagawa = 5 Ashby = 6 Raj/Ashby = 7 McMeeking (not yet implemented) | 0 |
| Ndata | Number of model parameters | 0 |
| Para(i) | ith Parameters of the selected sintering model | 0 |
DEFINITION
SINTER specifies the sintering driving force model for a porous object, with the exception of the “Simple elastic one step model”.
REMARKS
For simulation of Powder Metallurgy process (compaction and sintering), a unified model for describing compaction and sintering based on plasticity theory has been implemented in DEFORM system. In order to describe both compaction and sintering within a single model, the sintering driving force is treated as hydrostatic pressure and added to the yield function for a general porous material. A simulation with the sintering model allows predicting the non-uniform density distribution due to compaction and the dimensional change of the final product due to sintering. | 
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Table of sintering driving force models
| S.NO | Model | Sintering driving force | Parameter (i) | |
|---|---|---|---|---|
| 1 | Simple elastic one step |  |
None | |
| 2 | Skorohod |  |
 , |
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| 3 | Cocks |  |
 , ,  , |
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| 4 | Shinagawa |  |
,, |
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| 5 | Ashby |  |
, |
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| 6 | Raj/Ashby |  |
,, |
The simple elastic one step method computes sintering shrinkage for an elastic object and assumes the part reaches a fully dense state after sintering. Inputs are the initial elemental relative density distribution and elastic material properties. The volumetric strain is computed based on the current relative density.
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and then sintering stresses are estimated.
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After that one step elastic solution computes shrinkage.
Applicable object types: Porous, Elastic
Applicable simulation type: Sintering
RELATED TOPICS
Related keywords: OBJTYP (2D), OBJTYP (3D), YOUNG, POISON