A Numerical Model for the Prediction of Air Entrapment in Powder Compaction
The purpose of this work is to enhance simulations of powder compaction by predicting the air entrapment mechanism. A previous numerical solution predicted the entrapped air pressure of a one dimensional compact. This work expands on this previous solution to produce a model that predicts the entrap...
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| Main Author: | |
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| Format: | Dissertation |
| Language: | English |
| Published: |
ProQuest Dissertations & Theses
01-01-2018
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| Online Access: | Get full text |
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| Summary: | The purpose of this work is to enhance simulations of powder compaction by predicting the air entrapment mechanism. A previous numerical solution predicted the entrapped air pressure of a one dimensional compact. This work expands on this previous solution to produce a model that predicts the entrapped air pressure of a compact in two dimensions. By increasing the model to two dimensions, a more accurate estimate of entrapped air was produced. Additional insights on the mechanism of air entrapment were explored. The effects of compaction speed and the size of the punch-die gap on the entrapped air pressure were studied. Pre-compression was also modeled and the effects of the pre-compression relative density and the rest period were determined. |
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| ISBN: | 9780438195684 043819568X |