Abstract
This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM). A simplified 2D numerical heat conduction equation along with additional assumptions, such as heat effect from previously generated crater on a subsequent crater and instantaneous evaporation of the workpiece, are considered. For the material removal rate, an axisymmetric rectangular domain was utilized, while for the surface roughness, a rectangular domain where every discharge resides at the end of previous crater was considered. Simulated results obtained by solving the heat equation based on a finite element scheme suggested that results are more realistic by considering instantaneous evaporation of the material from the workpiece and the effect of residual heat generated from each spark. Good agreement between our model and previously published data validated the newly proposed models and demonstrate that instantaneous evaporation, as well as residual heat, provide more realistic predictions of the EDM process.
| Original language | English |
|---|---|
| Article number | 47 |
| Journal | Machines |
| Volume | 7 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 1 2019 |
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Keywords
- Crater
- EDM
- Heat source
- Material removal rate (MRR)
- Surface roughness
ASJC Scopus subject areas
- Control and Systems Engineering
- Computer Science (miscellaneous)
- Mechanical Engineering
- Control and Optimization
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering
Cite this
Modeling of material removal rate and surface roughness generated during electro-discharge machining. / Razeghiyadaki, Amin; Molardi, Carlo; Talamona, Didier; Perveen, Asma.
In: Machines, Vol. 7, No. 2, 47, 01.06.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling of material removal rate and surface roughness generated during electro-discharge machining
AU - Razeghiyadaki, Amin
AU - Molardi, Carlo
AU - Talamona, Didier
AU - Perveen, Asma
PY - 2019/6/1
Y1 - 2019/6/1
N2 - This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM). A simplified 2D numerical heat conduction equation along with additional assumptions, such as heat effect from previously generated crater on a subsequent crater and instantaneous evaporation of the workpiece, are considered. For the material removal rate, an axisymmetric rectangular domain was utilized, while for the surface roughness, a rectangular domain where every discharge resides at the end of previous crater was considered. Simulated results obtained by solving the heat equation based on a finite element scheme suggested that results are more realistic by considering instantaneous evaporation of the material from the workpiece and the effect of residual heat generated from each spark. Good agreement between our model and previously published data validated the newly proposed models and demonstrate that instantaneous evaporation, as well as residual heat, provide more realistic predictions of the EDM process.
AB - This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM). A simplified 2D numerical heat conduction equation along with additional assumptions, such as heat effect from previously generated crater on a subsequent crater and instantaneous evaporation of the workpiece, are considered. For the material removal rate, an axisymmetric rectangular domain was utilized, while for the surface roughness, a rectangular domain where every discharge resides at the end of previous crater was considered. Simulated results obtained by solving the heat equation based on a finite element scheme suggested that results are more realistic by considering instantaneous evaporation of the material from the workpiece and the effect of residual heat generated from each spark. Good agreement between our model and previously published data validated the newly proposed models and demonstrate that instantaneous evaporation, as well as residual heat, provide more realistic predictions of the EDM process.
KW - Crater
KW - EDM
KW - Heat source
KW - Material removal rate (MRR)
KW - Surface roughness
UR - http://www.scopus.com/inward/record.url?scp=85069439958&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069439958&partnerID=8YFLogxK
U2 - 10.3390/machines7020047
DO - 10.3390/machines7020047
M3 - Article
VL - 7
JO - Machines
JF - Machines
SN - 2075-1702
IS - 2
M1 - 47
ER -