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Das, Sanjoy
- Micro-indentation of a Conical Rigid Wedge by Numerical Slip-line Field Theory: A Hybrid Approach
Abstract Views :386 |
PDF Views:3
Authors
Affiliations
1 Mechanical Engineering Department, Kalyani Government Engineering College, Kalyani-741235, West Bengal, IN
2 Mechanical Engineering Department, Kalyani Government Engineering College, Kalyani -741235, West Bengal, IN
3 Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, West Bengal, IN
1 Mechanical Engineering Department, Kalyani Government Engineering College, Kalyani-741235, West Bengal, IN
2 Mechanical Engineering Department, Kalyani Government Engineering College, Kalyani -741235, West Bengal, IN
3 Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, West Bengal, IN
Source
Indian Science Cruiser, Vol 31, No 3 (2017), Pagination: 36-42Abstract
Slip-line field theory is generally applied for determination of plastic flow lines, stress, velocity of flow and plastic work. In this work, micro-indentation of a conical wedge into an infinitely long block has been analysed by numerical simulation of slip-line field equations. Though the previous works in this field considered straight line profile of the bulged material around the wedge, experimental results showed that the free surface of the material is not actually straight but curvilinear in shape. This work computes the slip line field considering the free surface separately as linear, or parabolic, or circular in nature. The combinations of linear and parabolic as well as linear and circular profiles are also studied. Results obtained in this work indicate suitability of the method showing good matching with the results reported in published literature.Keywords
Surface Profile, Micro-indentation, Slip-line Field, Numerical Technique, Hybrid Analysis.
References
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- A K Biswas, S Das, B Das and S Das, A SlipLine Field Solution for Micro-Indentation of a Rigid Conical Wedge by Numerical Technique, Int. Journal of Innovative Research in Science, Engineering and Technology, Vol 4, page 9094, 2015.
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- Bibliography
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- Comparisons Extensions of Plastic zones for Micro-indentation of a Rigid Wedge to a semi-infinite block by Finite Element Analysis and Numerical Slip-line Field Techniques
Abstract Views :320 |
PDF Views:3
Authors
Affiliations
1 Department of Mechanical Engineering, Kalyani Govt. Engineering College, West Bengal-741235, IN
2 Department of Engineering and Technological Studies, University of Kalyani, Kalyani, West Bengal-741235, IN
1 Department of Mechanical Engineering, Kalyani Govt. Engineering College, West Bengal-741235, IN
2 Department of Engineering and Technological Studies, University of Kalyani, Kalyani, West Bengal-741235, IN
Source
Indian Science Cruiser, Vol 33, No 6 (2019), Pagination: 48-52Abstract
The present work compares the extension of plastic zones when a rigid indenter is indented to a semi-infinite block of Mild Steel by finite element analysis (FEA) and numerical slip-line field (SLF) technique. The semi-apex angle of the wedge is varied from 10° to 80° with different friction conditions. The previous works of the present authors showed that the lip profiles of deformed material around the wedge are nonlinear in nature. The results obtained from the present analysis, showed that extend of plastic zones obtained by SLF with parabolic lip and FEA are very close. Hence, the original proposition of the previous works by present authors that the nature of lip profile is non-linear is again proved in this present work.Keywords
Micro-indentation, Finite Element Analysis, Numerical Technique, Slip-line Field.References
- R. Hill, E.H. Lee and S.J. Trupper, “The Theory of Wedge Indentation of Ductile Materials”, Proc. R. Soc. Lond. A, 188, pp. 273-289, 1947.
- J. Grunzweiz, I.M. Longman and N.J. Petch, “Calculation and Measurement of Wedgeindentation”, Journal of Mech. and Phys. of Solids, 2, pp. 81-86, 1954.
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- A.K. Biswas, S. Das, B. Das and S. Das, “A slipline field solution for micro-indentation of a rigid conical wedge by numerical technique”, International Journal of Innovative Research in Science, Engineering and Technology, volume 4, 2015, 90-94.
- A. K. Biswas, S. Das and S. Das, “MicroIndentation of Conical Rigid Wedge by Numerical Slip-line field theory: A Hybrid Approach”, Indian Science Cruiser, 31(3), pp.36-42, 2017.
- A.K. Biswas, S. Das, B. Das and S. Das, “Estimating Conical Indentation Load by Numerical Slip-line Field Technique”, J. of Structural Engineering, Vol. 45, No.1, 2018, pp.118-124.
- A. K. Biswas, S. Das and S. Das, “Determination of Hardness for Cone Indentation to a Semi-Infinite Block for Various Cone Angles and Friction Parameters by Numerical Slip-Line Field Technique”, Proc. ICTACEM-2017, Dec., 2017.
- Evaluation of Linear Stability of Porous Hydrodynamic Journal Bearings under Micropolar Lubrication Condition
Abstract Views :108 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, Bipradas Pal Chowdhury Institute of Technology, Krishnanagar-741101, IN
2 Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, IN
3 Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani-741235, IN
1 Department of Mechanical Engineering, Bipradas Pal Chowdhury Institute of Technology, Krishnanagar-741101, IN
2 Department of Engineering and Technological Studies, Kalyani University, Kalyani-741235, IN
3 Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani-741235, IN
Source
Indian Science Cruiser, Vol 37, No 1 (2023), Pagination: 16-27Abstract
This theoretical investigation has been performed to explore the dynamic performance characteristics of micropolar lubricated porous hydrodynamic journal bearing considering slip effect along tangential direction. The properties of finite porous hydrodynamic journal bearings and micropolar lubricant and the Beavers-Joseph slip model are combined to reestablish the modified Reynolds equation. Dynamic nature of the bearing can be obtained by implementation of the first order perturbation technique in bearing properties. This research work on micropolar lubricated porous hydrodynamic journal bearing in dynamic condition has produced superior linear stability as compared to lubrication using Newtonian fluid.Keywords
Micropolar lubricant; critical mass parameter; whirl ratio; porous bearing.References
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