Dr. Krishnakumar, R.

Name : R. Krishna Kumar
Present Position : Professor, Department of Engineering Design, IIT Madras, Chennai.
Postal Address: Prof. R. Krishna Kumar
Department of Engineering Design
Indian Institute of Technology Madras
Chennai 600 036
E-mail address: rkkumar@iitm.ac.in
Phone Number : 04422574661 (O); 04424418170 ®
Education Qualification: Ph.D. in Engineering (IIT Madras)
Number of Ph.Ds guided : No. of Ph.Ds completed : 9 (Annexure A)
No. of Ph.Ds under progress: 4
Number of Publications : International : 49;
National : 5 (Annexure B)
Number of Projects: As Prin. Investigator: 9; (Annexure C)
Completed: 7
Ongoing: 2
Total Amount: Rs. 6,56,80,000
As Co-Investigator: 2 (Ongoing 1)
Membership in Societies : Fellow, Indian National Academy of Engineers
Courses taught: Graduate:
  1. Finite Element Analysis (Entire course available in the youtube)
  2. Advanced Finite Element Analysis (Entire course available in the youtube)
  3. Vehicle Dynamics
  4. Design of Automotive Structure
  5. Biomedical Signal and Image Processing
  6. Computational Methods in Biomedical Engineering

Undergraduate:
  1. Introduction to Materials Science
  2. Manufacturing Science

ANNEXURE A


Name of the Scholar

Title of Thesis

Year of Award

Ph.D.

 

 

B.Anil

Experimental and theoretical studies for forming continuous helicoids from metal strips

1998

Ch Pavana Chand

Yield function for metal powder compaction based on micromechanics of particle deformation

1996

D.Roshan Kumar

Dynamic compaction of metal powders

2000

S.N. Kurbet

Finite Element Analysis of the dynamics of internal Combustion engine

2003

A. Venugopal Rao

Workability in cold forging: Evaluation of the Performance of theoretical criteria through finite element analysis

2005

K.V.Narasimha Rao

Design of Pneumatic Tyres with Finite Element Analysis

2005

C. Ravishankar

Stretchability of Type 304 Austenitic Stainless Steel Sheet and Some aspects of stretchability in sheet metal

2006

N. Balaramakrishna

Vehicle and Tyre Models for Vehicle Handling and Ride Comfort

2009


ANNEXURE B

LIST OF RESEARCH PUBLICATIONS


Refereed  International Journals

  1. S.Chithambaram, K.Chinnathambi, R.Krishna Kumar and O.Prabhakar, FEM modeling and quality assessment of TIG Surface remelted pattern grade CI, AFS Trans, 87, pp.129- 135, 1987.

 

  1. R.Krishna Kumar, R. Narasimhan and O. Prabhakar, Finite Element Analysis of dynamic crack growth under plane stress in a viscoplastic material, Engg. Fracture Mechanics, Vol.37, No.5, pp.1071-1084, 1990.
  2. R.Krishna Kumar, R.Narasimhan and O.Prabhakar, Temperature rise in a viscoplastic material during dynamic crack growth.  Int. Jl. of Fracture, Vol.48, pp.23-40, 1991.
  1. R.Krishna Kumar, R.Narasimhan and O.Prabhakar, Dynamic Growth of Tensile Crack by Ductile and Brittle Fracture Mechanisms in a Viscoplastic Material, Acta Metall. Materials, Vol.40, No.7, pp.1563-1572, 1992.

 

  1. K.S.Kannan, R.Krishna Kumar and O.Prabhakar, Finite Element Crack Growth Algorithm for Dynamic Fracture, Computational Mechanics, Vol.12, No.6, pp.349-359, 1993.
  1. V.B.Shenoy and R.Krishna Kumar, Dynamic Crack Growth in a Power Hardening Viscoplastic Material, Trans ASME Jl. Engg. Materials and Technology, Vol.116, No.4, pp.465-470, 1994.
  2.  
  3. G.Ravichandran, V.P.Ragupathy, N.Ganesan and R.Krishna Kumar, Prediction of temperature distribution during circumferential welding of thin pipes using f.e.m., Intl. Jl. for Joining of Materials, Vol.7, No.1, pp.34-44, 1995.
  1. R.Krishna Kumar and J.N.Reddy, Stress distributions during fibre pull out, Trans. ASME, Jl. App. Mech., Vol.63, pp.301.306, June 1996.

 

  1. M.Vijaya Babu, R.Krishna Kumar, O.Prabhakar and N.Gowrishankar, Fracture mechanics approaches to coating strength evaluation, Engineering Fracture Mech., Vol.55, No.2, pp.235-248, 1996.
  1. M.Vijaya Babu, R.Krishna Kumar, O.Prabhakar and N.Gowrishankar, Simultaneous optimization of flame spraying process parameters for high quality Mo coatings using Taguchi Methods, Surface and Coatings Technology, Vol.79, No.1-3, pp.276-288, 1996.

 

  1. Ch Pavanachand and R.KrishnaKumar, Yield function for metal powder compaction based on micromechanics of particle deformation, Scripta Meterialia, Vol.35, No.6, 767-774, 1996.
  1. Ch Pavanachand and R.KrishnaKumar, A new one-pass approach for large deformation multibody frictional contact analysis, Communications in Numerical Methods in Engineering, Vol.12, pp.569-579, 1996.

 

  1. Ch Pavanachand and R.KrishnaKumar, Yield function parameters for metal powder compaction based on unit cell studies, Acta Met., V.45, No.4, pp.1425-1444, 1997.
  2.  
  3. G.Ravichandran, V.P.Raghupathy, N.Ganesan and R.KrishnaKumar, Prediction of axis shift distortion during circumferential welding of thin pipes, Welding Journal, V.76, No.1, pp.39s-54s, 1997.
  1. P.Nainan Kurian, K.S.Beena, and R.Krishna Kumar, Settlement of reinforced sand in foundations, ASCE Intl. Jl. of Geotechnical and Geoenvironmental Engineering, Vol.123, No.9, pp.818-826, 1997.
  2.  
  3. Ch.Pavana Chand and R.KrishnaKumar, Remeshing issues in the Finite Element Analysis of metal forming problems, Jl. of Material Processing Tech., Vol.75/1-3, pp.63-74, March 1998.
  4.  
  5. G.Rangarajan, R.Krishna Kumar and J.N.Reddy, Numerical modelling of super-plastic behaviour of shape memory alloys, Intl. Jl. of solids and structures, Vol.35, Issue 14, pp.1489-1513, 1998.

     

  1. D.Roshan Kumar, R.Krishna Kumar and P.K.Philip, Simulation studies on compression of porous metals by dynamic loading, Powder Metallurgy (Institute of Materials U.K.), Vol.41, No.4,pp.281-287, 1998.

     

  1. D.Roshan Kumar, R.Krishna Kumar and P.K.Philip, Simulation of Dynamic compaction of metal powders, Jl. App. Physics, Vol.85, Issue 2, pp.767-775,1999.
  1. L.Ramanan, R.Krishna Kumar and S.Sriraman, Thermo-mechanical analysis of rail-wheel, Intl. Jl. of Mechanical Sciences, Vol 41,pp. 487-505, 1999.

 

  1. M.Senthil Kumaran, R.Krishna Kumar, R.Sriraman, Finite element simulation of arc welding distortion and correction of thin sidepanel sheets of a railway coach, Proc. Inst. Mech. Engrs. (UK), Part-F, Jl. Rail & Rapid Transit, Vol 214, pp 27-43, 2000.
  1. M.Senthil Kumaran, R.Krishna Kumar, R.Sriraman,Finite element simulation of railway coach shell assembly process, Proc. Inst. Mech. Engrs. (UK), Part-B, Jl. of Engg. Mfr.  Vol. 214 pp 582 – 592, 2000

 

  1. M.N.Ravindranath, R.Krishna Kumar, Simulation of cold forging using contact and practical adaptive meshing algorithms, Jl. of Material Processing Tech.,   Vol. 104  pp 110 – 126 2000.
  1. D.Roshan Kumar, R.Krishna Kumar and P.K.Philip, Numerical Investigation of pyramid indentation on powder compacts , Scripta Metallurgica, Vol. 44, 12, pp.2713 – 2719, 2001.

 

  1. Ramakrishna Gnyaneshwar, Ramarathnam Krishna Kumar and Komarakshi R. Balakrishnan, Dynamic Analysis of the Aortic Valve using a Finite Element Model.  The Annals of Thoracic Surgery, Vol. 73, 4, 1122 – 1129, 2002
  1. D. Roshan Kumar R.Krishna Kumar and P.K. Philip, Investigations on dynamic compaction of Metal powders Part I : Experimental. Powder Metallurgy (Institute of Materials U.K.), Vol.45, 3, 1 – 8 2002.

 

  1. A. Venugopal Rao, N. Ramakrishnan, and R. Krishna Kumar (2003) A Comparative evaluation of the theoretical failure criteria for workability in cold forging;   Journal of Materials Processing TechnologyVol. 142, 29 – 42
  1. G. Unnithan, R. KrishnaKumar and A. Prasad (2003), Application of shell-spring model for optimisation of radial tyre contour using Genetic Algorithm,   Tire Science and Technology, Vol. 31, 39 – 63

 

  1.   K. Rao, R. Kumar, P. Bohara, (2003) “Transient Finite Element Analysis of Tyre Dynamic Behaviour”,    Tire Science & Technology Vol. 31, 104 – 127
  1. S.N. Kurbet and R K Kumar, (2004) “ A finite element study of piston tilt effects on piston ring dynamics in internal combustion engines” Proc. Inst. of  Mech. Engineers Part K : J. Multi-body Dynamics Vol. 218 107 – 117, 2004.

 

31. Vangipuram Canchi Sripathi, Ramarathnam Krishna Kumar and Komarakshi R. Balakrishnan (2004) “Further insights into normal aortic valve function: role of a compliant aortic root on leaflet opening and valve orifice”    The Annals of Thoracic Surgery, Vol. 77, Issue 3,   844-851

32. R. Krishna Kumar and K.R. Balakrishnan (2005) “Influence of lumen shape and vessel    geometry on plaque stresses. Possible role in the vulnerability of  a remodelled vessel   and the shoulder of a plaque  Heart ( British Medical Journal  Publication) Vol. 91, 1459-1465   

33. Hiremath, Somashekhar S.; Singaperumal, M.; Kumar, R. Krishna (2006) “ Steady State Analysis of a precision hydraulic flow control servovalve using the finite element method”,   Journal of Micromechatronics Volume 3, Number 2, 2006 , pp. 103-122(20)

34. Somashekar, S. Hiremath, Singaperimal, M and Krishna Kumar, R (2006).  “Modelling the steady-state  of a jet pipe electrohydraulic servovalve” Proceedings of the Institution of Mechanical Engineers, Part I, Journal of Systems and Control Engineering, Vol. 220, 2, 109-129

35. K. Narasimha Rao; R. Krishna Kumar; R. Mukhopadhyay; V. K. Misra (2006). “ A Study of Relationship between Magic Formula Coefficients and Tyre Design attributes through Finite Element Analysis”   Vehicle Systems Dynamics, Vol. 44, 1, 33 – 64

36.  K V Narasimha Rao, R Krishna Kumar, and P C Bohara (2006) A Sensitivity Analysis of Design Attributes and Operating Conditions on Tyre Operating Temperatures and Rolling Resistance using Finite Element Analysis. Proc. Inst. of Mech. Engineers – Part D: Journal of Automobile Engineering, 220, 501-517.

37.  K. V. Narasimha Rao, R. Krishna Kumar, P. C. Bohara, and R. Mukhopadhyay  
(2006) A Finite Element Algorithm for the Prediction of Steady State   Temperatures of Rolling Tyres. Tire Science and Technology, 34, 195-214.

38. K. V. Narasimha Rao; R. Krishna Kumar (2007), Simulation of Tyre Dynamic Behaviour using Various Finite Element Techniques Int. Journal of Computational Methods in Engineering Science and Mechanics , Vol. 8, No.5, 363 – 372  

39. S. H. Somashekhar, M. Singaperumal and R. Krishna Kumar (2007), Mathematical modelling and simulation of a jet pipe electrohydraulic flow control servo valve., IMechE International Journal of Systems and Control Engineering - Proceedings of the Institution of Mechanical Engineers Part I., Vol. 221, 365-382

40. A. Venugopal Rao; R. Krishna Kumar; N. Ramakrishnan (2007), “Workability limits in Cold Forging: Investigation of the Deformation Mechanics through FEA”   Mechanics of Advanced Materials and Structures,  14, No.3, 213 – 224

41. S Sowmianarayanan, A Chandrasekaran, and R Krishna Kumar (2008) “ Finite Element Analysis of a Subtrochantric fractured Femur with DHS, DCS, PFN Implants – A comparative Study,    Proceedings of the Institution of Mechanical Engineers, Part H, Journal of Engineering in Medicine, 222, No. H1, 117 – 128, 

42.   S N Kurbet and R Krishna Kumar (2007), “ Finite Element Modeling of Piston – Ring Dynamics and blow-by Estimation in Four-Cylinder Diesel Engine, to appear in Proceedings of the Institution of Mechanical Engineers, Part D, Journal of Automobile Engineering    221, No.   11,   pp. 1405-1414(10)

43. N. Balaramakrishna; R. Krishna Kumar (2009) “A Study on the effect of different tyre  imperfections on  steering wheel vibration” Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility, 1744-5159, Volume 47, Issue 6,  pp. 753 – 770

44. P. Maboo Subhani; R. Krishna Kumar, “A New Stored Energy Function for Rubber like Materials for low Strains” Mechanics of Advanced Materials and Structures, 1537-6532, Volume 16, Issue 5, 2009, pp. 402 – 416

45.  N. Balaramakrishna; R. Krishna Kumar (2009), “A study on the estimation of SWIFT model Parameters by finite element analysis” Proceedings of the Institution of Mechanical Engineers, Part D, Journal of Automobile Engineering Vol. 223 pp 1283-1300.

46. C. Ravishankar; R. Krishna Kumar “ Stretchability of Prior cold Worked AISI Type 304 Stainless Steel Sheet”, Mechanics of Advanced Materials and Structures, 336-349, Vol.19, 2012
47. C. Ravishankar; R. Krishna Kumar, “Finite Element Simulation of Sheet Stretched Over a Hemispherical Punch: A Parametric Study” Mechanics of Advanced Materials and Structures, Vol.19 663-675, 2012
48. Arun Mangalprakash, Ramarathnam Krishna Kumar, Komarakshi R. Balakrishnan, “ Effect of Calcification on Plaque Stresses and Vulnerability”, Mechanics of Advanced Materials and Structures, Vol. 20, 309-315, 2013

49. Maboo Subhani, Ramarathnam Krishna Kumar, Komarakshi R. Balakrishnan, “Normal aortic valves stay open much longer in systole than porcine    substitutes” Asian Cardiovascular and Thoracic Annals June 2013 21: 275-280

 

Indian Journals

  1. R.Krishnakumar, Dynamic Fracture Mechanics - A scientific tool for prevention of catastrophic failure, Bull. Material Science, Vol.15, No.1, pp.27-34 , Feb. 1992, Won the Best Paper Award for 1992.
  2. Somashekhar. S. Hiremath, M. Singaperumal and R. Krishna Kumar., Finite element approach: Steady state analysis of electrohydraulic flow control servovalve., Journal of Fluid Power, 28, 17-23, 2002

 

  1. Somashekhar. S. Hiremath, M. Singaperumal and R. Krishna Kumar. , Design of precision hydraulic components through reverse engineering., Journal of Fluid Power, 29, 13-25, 2003
  1. Somashekhar. S. Hiremath, M. Singaperumal and R. Krishna Kumar., Stiffness analysis of precision hydraulic component feedback spring assembly by finite element method and experimental validation., Journal of Fluid Power, 29, 15-20, 2003

 

  1. Somashekhar. S. Hiremath, M. Singaperumal and R. Krishna Kumar., Dynamic Analysis of Electrohydraulic Servovalve., Journal of Fluid Power., 30, 12-17, 2004

 

ANNEXURE C

As Principal Investigator:

S.No.

Name of the Project

Duration

Sponsoring Agency

Amount

1.

Centre of Excellence in Tyre and Vehicle Mechanics – Phase I

4 years    (2004-2008)

J.K.Tyres

Rs.1.5 crores

2.

Centre of Excellence in Tyre and Vehicle Mechanics – Phase II

3 years
(2008-2011)

J.K.Tyres

Rs.1.5 crores

3.

Centre of Excellence in Tyre and Vehicle Mechanics – Phase III

3 years
(2011-2014)

J.K.Tyres

Rs.1.5 crores

4.

Trivitron Innovation Centre

2 years
(2011-2013)

Trivitron

Rs.25 lakhs

5.

Dynamic Analysis of Tyres

2 years
(2001-2003)

J.K.Tyres

Rs.15 lakhs

6.

CAD/ FEM for coach Design

3 years
(1997-2000)

ICF Chennai

Rs.6.5 lakhs

7.

Analysis of P/M connecting Rod and rolling of spur gears

2 years
(1998-2000)

Sundaram Fasteners, Hosur

Rs.13 lakhs

8.

Finite Element Analysis
of Friction Welding Process

6 months

DMRL

Rs.5 lakhs

9.

CAD/ CAM of Dies

3 years

DST

Rs.17.8 lakhs

 

 

 

As Co-investigator:


S.No.

Name of the Project

Duration

Sponsoring Agency

Amount

1.

Center for FEA and Design

3 years

Group of Industries

Rs.38 lakhs

2.

Development of experimental set up to perform multi-axial mechanical tests on soft times

3 years

DBT

Rs.43,56,300/-

 

Total

81,56,300/-