Experimental and numerical investigation of ram extrusion of bread dough
An experimental and numerical study on ram extrusion of bread dough was conducted. A laboratory ram extrusion rig was designed and manufactured, where dies with different angles and exit radii were employed. Rate dependent behaviour was observed from tests conducted at different extrusion speeds, an...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
AIP Publishing
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/57479/1/Experimental%20and%20numerical%20investigation%20of%20ram%20extrusion%20of%20bread%20dough.pdf |
| _version_ | 1825931620644814848 |
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| author | P. Mohammed, Mohd Afandi Wanigasooriya, Leonard Charalambides, Maria N. |
| author_facet | P. Mohammed, Mohd Afandi Wanigasooriya, Leonard Charalambides, Maria N. |
| author_sort | P. Mohammed, Mohd Afandi |
| collection | UPM |
| description | An experimental and numerical study on ram extrusion of bread dough was conducted. A laboratory ram extrusion rig was designed and manufactured, where dies with different angles and exit radii were employed. Rate dependent behaviour was observed from tests conducted at different extrusion speeds, and higher extrusion pressure was reported for dies with decreasing exit radius. A finite element simulation of extrusion was performed using the adaptive meshing technique in Abaqus. Simulations using a frictionless contact between the billet and die wall showed that the model underestimates the response at high entry angles. On the other hand, when the coefficient of friction value was set to 0.09 as measured from friction experiments, the dough response was overestimated, i.e. the model extrusion pressure was much higher than the experimentally measured values. When a critical shear stress limit, τmax, was used, the accuracy of the model predictions improved. The results showed that higher die angles require higher τmax values for the model and the experiments to agree. |
| first_indexed | 2024-03-06T09:29:31Z |
| format | Conference or Workshop Item |
| id | upm.eprints-57479 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:29:31Z |
| publishDate | 2016 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | upm.eprints-574792017-09-27T11:09:14Z http://psasir.upm.edu.my/id/eprint/57479/ Experimental and numerical investigation of ram extrusion of bread dough P. Mohammed, Mohd Afandi Wanigasooriya, Leonard Charalambides, Maria N. An experimental and numerical study on ram extrusion of bread dough was conducted. A laboratory ram extrusion rig was designed and manufactured, where dies with different angles and exit radii were employed. Rate dependent behaviour was observed from tests conducted at different extrusion speeds, and higher extrusion pressure was reported for dies with decreasing exit radius. A finite element simulation of extrusion was performed using the adaptive meshing technique in Abaqus. Simulations using a frictionless contact between the billet and die wall showed that the model underestimates the response at high entry angles. On the other hand, when the coefficient of friction value was set to 0.09 as measured from friction experiments, the dough response was overestimated, i.e. the model extrusion pressure was much higher than the experimentally measured values. When a critical shear stress limit, τmax, was used, the accuracy of the model predictions improved. The results showed that higher die angles require higher τmax values for the model and the experiments to agree. AIP Publishing 2016 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/57479/1/Experimental%20and%20numerical%20investigation%20of%20ram%20extrusion%20of%20bread%20dough.pdf P. Mohammed, Mohd Afandi and Wanigasooriya, Leonard and Charalambides, Maria N. (2016) Experimental and numerical investigation of ram extrusion of bread dough. In: 19th International ESAFORM Conference on Material Forming (ESAFORM 2016), 27-29 Apr. 2016, Nantes, France. (pp. 1-6). 10.1063/1.4963607 |
| spellingShingle | P. Mohammed, Mohd Afandi Wanigasooriya, Leonard Charalambides, Maria N. Experimental and numerical investigation of ram extrusion of bread dough |
| title | Experimental and numerical investigation of ram extrusion of bread dough |
| title_full | Experimental and numerical investigation of ram extrusion of bread dough |
| title_fullStr | Experimental and numerical investigation of ram extrusion of bread dough |
| title_full_unstemmed | Experimental and numerical investigation of ram extrusion of bread dough |
| title_short | Experimental and numerical investigation of ram extrusion of bread dough |
| title_sort | experimental and numerical investigation of ram extrusion of bread dough |
| url | http://psasir.upm.edu.my/id/eprint/57479/1/Experimental%20and%20numerical%20investigation%20of%20ram%20extrusion%20of%20bread%20dough.pdf |
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