Dr. Sachin Kumar is an Associate Professor in the Department of Mechanical Engineering at Indian Institute of Technology (IIT) Ropar. He embarked on his academic career with a Bachelor’s degree in Mechanical Engineering from Uttar Pradesh Technical University, graduating in 2008. His pursuit of advanced knowledge led him to Motilal Nehru National Institute of Technology, where he earned his Master’s degree in 2010. Furthering his specialization, he obtained his PhD from IIT Roorkee in 2015. During his doctoral studies, he focused on the development of numerical methods for the failure analysis of engineering structures. His research interests are centered on the development of numerical frameworks for the damage and fracture analysis of various materials, including metals, composites, and soft/hard tissues. Before joining IIT Ropar, he served as a Research Fellow at the prestigious National University of Singapore, where he contributed to cutting-edge research projects. Following this, he took on the role of Assistant Professor at the Indian Institute of Information Technology, Design and Manufacturing (IIITDM) Jabalpur, further honing his teaching and research skills.

Work Experience:

• Associate Professor, Indian Institute of Technology Ropar, April 2022 – present

• Assistant Professor, Indian Institute of Technology Ropar, May 2017 – March 2022

• Assistant Professor, Indian Institute of Information Technology, Design and Manufacturing Jabalpur, Dec. 2016 – May 2017

• Research Fellow, National University of Singapore, Singapore, April 2016 – Dec. 2016

• Assistant Professor, BML Munjal University Gurgaon, June 2015 – March 2016

Professional Achievements:

• Dean Academics, Undergraduate Studies, IIT Ropar (Oct, 2023 – Present) 

• Academic Committee for Research & Post Graduate Studies (ACRPGS) member, IIT Ropar (Feb, 2023 – Oct, 2023) 

• Warden of Beas hostel, IIT Ropar (Oct, 2022 – Oct, 2023). 

• Faculty Incharge of Sports Activities, IIT Ropar (Jan, 2019 – August, 2023). 

• Faculty Advisor for 2018 B.Tech Mechanical students, IIT Ropar 

• Associate warden of a hostel at IIITDM Jabalpur, India.

Invited Lectures/Talks:

• Delivered an expert talk on “Localizing gradient damage approach for failure analysis of fiber reinforced composites at IIT BHU on 02nd March, 2023.

• Delivered an expert talk on “Design and development of bone architecture based implant and its suitability for 3D Printing” in a Short Term Course on “Smart Manufacturing and Circular Economy” at PEC Chandigarh on 25th Feb, 2023. 

• Delivered an expert talk on “Nonlinear Finite Element Method” in a Short Term Course on “Finite Element Modelling for Engineering” at IIT Mandi on 12th Dec, 2022. 

• Delivered an expert talk on “Failure Risk Assessment Tool for Proximal Femur with Optimized Parameters” in a Short Term Course on “Statistical Tools: Modeling and Optimization (STMO-22)” at NIT Jalandhar on 23rd July, 2022. 

• Delivered an expert lecture on “Advancement in Continuum Damage Models for Failure Analysis of Structures” in a faculty development program on “Advances in Numerical Methods for Engineering Structures: Fundamentals toward Applications” at IIT Ropar under ATAL-AICTE Program on 26 Oct, 2021.

• Delivered an expert lecture on “Continuum Damage Mechanics Models” in a short term course “Numerical Methods in Engineering: Advances and Applications” at IIT Ropar under AKIN program on 07 July, 2021.

• Delivered an expert lecture on “Computational Mechanics to Model Complex Interfaces and Evolving Discontinuities” at Cardiff University Wales, U.K. on 04th July, 2019

• Delivered an expert lecture on “Some Aspects of Computational Mechanics Based on FEM for Engineering Problems” at Uttaranchal University Dehradun on 19th April, 2019. 

• Delivered an expert lecture on “Finite Element Method in Metal Forming Processes” in a Short Term Course on “Emerging Trends in Industrial Systems (ETIS-18)” at NIT Jalandhar on 11th July, 2018. 

• Delivered an expert lecture on “Numerical Methods and Programming in MATLAB” at PDPM Indian Institute of Information Technology, Design and Manufacturing Jabalpur, India, 24th January, 2017.

Short Term Courses Organized:

• Organized a faculty development program (under ATAL-AICTE scheme) on “Computational and Experimental Analysis of Advanced Materials and Structures” from October 10-21, 2022.

• Organized a faculty development program (under ATAL-AICTE scheme) on “Advances in Numerical Methods for Engineering Structures: Fundamentals toward Applications” from October 25-29, 2021.

• Organized a short term course (under AKIN program, IIT Ropar) on “Numerical Methods in Engineering: Advances and Applications” from July 05-08, 2021.

Research Projects:

• Development of a localized gradient damage based extended-FE model for fatigue analysis of aircraft components, Aeronautics Research & Development Board (AR&DB) India. (Ongoing)

• Design and development of lightweight sandwich composite panels with auxetic core for impact applications, Agency: SERB DST India. (Ongoing)

• Damage assisted failure analysis of engineering structures using cohesive zone approach and XFEM, SERB, Department of Science and Technology India. (July, 2017-Jan, 2021) (Completed)

• Bone fracture analysis for type-2 diabetic patients with osteoporosis based on experimentation and finite element modelling, SERB, Department of Science and Technology India. (May, 2019 – April, 2022) (Completed)

• Advance glycation end-products (AGE) breaker improving mechanical property of osteoarthritic cartilage-A qualitative analysis, Department of Science & Technology & Renewable Energy Chandigarh. Completed (May, 2020 – April, 2022) (Completed).

• An experimental and numerical study to investigate the mechanical properties of soft tissues with dynamic loading under different environmental conditions, ISIRD Grant, IIT Ropar, India. (March, 2018-Feb, 2021), (Completed).

Patents:

• Krashn K. Dwivedi, Piyush Lakhani, Sachin Kumar, Navin Kumar, “Apparatus for mechanical testing of biological tissues”, Indian Patent, Application No: 202111012872

List of Publications:

International Journals:

Year: 2024

1. Umed Singh, Sachin Kumar, H. Pathak, T.Q. Bui and R.K. Gupta, “Modeling of 2D thermos-elastic brittle fracture using smoothed floating node method”, Mechanics of Advanced Materials and Structures, https://doi.org/10.1080/15376494.2024.2311857 Taylor & Francis, IF – 3.338

Year: 2023

2. W Songsuwan, N Wattanasakulpong, Sachin Kumar,” Nonlinear transient response of sandwich beams with functionally graded porous core under moving load”, Engineering Analysis with Boundary Elements, Vol. 155, pp. 11-24, 2023. Elsevier, IF-4.2

3. Krashn K. Dwivedi, Piyush Lakhani, Ashu Yadav, Deepak, Sachin Kumar and Navin Kumar, “Location specific mutli-scale characterization and constitutive modelling of pig aorta”, Journal of Mechanical Behavior of Biomedical Materials, pp. 105809, Vol. 142, 2023. Elsevier, IF-3.902

4. Krashn, P. Lakhani, P. Sihota, K. Tikoo, Sachin Kumar and Navin Kumar,“The multiscale characterization and constitutive modeling of healthy and type 2 diabetes mellitus Sprague Dawley rat skin,” Acta Biomaterialia. Vol.  158, pp. 324-346, 2023. Elsevier, IF-10.633

5. K. Dwivedi, H. Pathak and Sachin Kumar, “Variable node higher-order XFEM for fracture modeling in orthotropic material”, Part C: Journal of Mechanical Engineering Science, https://doi.org/10.1177/0954406222114887 (Accepted). SAGE, IF – 1.015

Year: 2022

6. Umed Singh and Sachin Kumar, “Smoothed Floating Node Method for Modelling Cohesive Fracture in Quasi-Brittle Materials”, Mechanics of Advanced Materials and Structures, https://doi.org/10.1080/15376494.2022.2154874  (Accepted). Taylor & Francis, IF – 3.338

7. Aakash Soni, Sachin Kumar and Navin Kumar, “Stochastic failure analysis of proximal femur using an isogeometric analysis based nonlocal gradient-enhanced damage model”, Computer Methods and Programs in Biomedicine, Vo;, 220, pp. 106820, 2022, Elsevier, IF-7.027

8. Alok Negi, Aakash Soni and Sachin Kumar, “An anisotropic localizing gradient damage approach for failure analysis of fiber reinforced composites” Composite Materials, pp. 115677, Vol. 294, 2022. Elsevier, IF-6.603

9. Alok Negi and Sachin Kumar, “A continuous-discontinuous localizing gradient damage framework for failure analysis of quasi-brittle materials” Computer Methods in Applied Mechanics and Engineering, pp. 114434, Vol. 390, 2022. Elsevier, IF-6.756

10. Umed Singh, Sachin Kumar, Boyang Chen, “Smoothed floating node method for modelling 2D arbitrary crack propagation problems”, Theoretical and Applied Fracture Mechanics, pp. 103190, Vol. 117, 2022. Elsevier, IF-4.017

11. Krashn K. Dwivedi, Piyush Lakhani, Sachin Kumar and Navin Kumar, “Effect of Collagen fiber orientation on the Poisson’s ratio and stress relaxation of skin: An ex-vivo and in-vivo study”, Royal Society of Open Science, Accepted. Royal Society, IF-2.963 

12. Krashn K. Dwivedi, Piyush Lakhani, Sachin Kumar and Navin Kumar, “A hyperelastic model to capture the mechanical behaviour and histological aspects of the soft tissues”, Journal of Mechanical Behavior of Biomedical Materials, pp. 105013, Vol. 126, 2022. Elsevier, IF-3.902

Year: 2021

13. Aakash Soni, Alok Negi, Sachin Kumar and Navin Kumar, “An IGA based nonlocal gradient-enhanced damage model for failure analysis of cortical bone”, Engineering Fracture Mechanics, pp. 107976, Vol. 255, 2021. Elsevier, IF-4.406

14. Alok Negi, Umed Sing and Sachin Kumar, “Structural size effect in concrete using a micromorphic stress-based localizing gradient damage model”, Engineering Fracture Mechanics, pp. 107511, Vol. 243, 2021. Elsevier, IF-4.406

15. R.N. Yadav, P. Uniyal, P. Sihota, Sachin Kumar, V. Dhiman, V.G. Goni, D. Sahni, S.K. Bhadada, N. Kumar, "Effect of ageing on microstructural and fracture behavior of cortical bone as determined by experimental and Extended Finite Element Method (XFEM)", Medical Engineering & Physics, pp. 100-112, Vol. 93, 2021. Elsevier, IF-2.242

16. R.N. Yadav, P. Uniyal, P. Sihota, D. Neradi, J.C. Bose, V. Dhiman, S. Karn, S. Sharma, S. Aggarwal, V.G. Goni, Sachin Kumar, S.K. Bhadada, N. Kumar, "Prediction of mechanical properties of trabecular bone in patients with type 2 diabetes using damage finite element method", Journal of Biomechanics, pp. 110495, Vol. 123, 2021. Elsevier, IF-2.712

Year: 2020

17. Krashn K. Dwivedi, Piyush Lakhani, Sachin Kumar and Navin Kumar, “Frequency dependent inelastic response of collagen architecture of pig dermis under cyclic tensile loading: An experimental study”, Journal of Mechanical Behavior of Biomedical Materials, pp. 104030, Vol. 112, 2020. Elsevier, IF-3.902

18. Alok Negi, Sachin Kumar and L.H. Poh, “A Localizing gradient damage enhancement with micromorphic stress-based anisotropic nonlocal interactions” International Journal for Numerical Methods in Engineering, pp. 4003-4027, Vol. 121(18), 2020. Elsevier, IF-3.477

19. Aakash Soni, Sachin Kumar and Navin Kumar, “Effect of Parametric Uncertainties on Fracture Behavior of Cortical Bone using XIGA”, Engineering Fracture Mechanics, pp. 107079, Vol. 233, 2020. Elsevier, IF-4.406

20. Margi Gajjar, Himanshu Pathak and Sachin Kumar, “Elasto-Plastic Fracture Modeling for Crack Interaction with XFEM”, Transactions of the Indian Institute of Metals, pp. 1679-1687, Vol. 73, 2020. Springer, IF-1.499

21. Krashn K. Dwivedi, Piyush Lakhani, Sachin Kumar, N. Kumar, “The effect of strain rate on the stress relaxation of the pig dermis: a hyper-viscoelastic approach”, Journal of Biomechanical Engineering, pp. 091006, Vol. 142, 2020. ASME, IF-2.097

Year: 2019

22. Alok Negi, Sachin Kumar, “Localizing gradient damage model with smoothed stress based anisotropic nonlocal interactions”, Engineering Fracture Mechanics, pp. 21–39, Vol. 214, 2019. Elsevier, IF-4.406

23. Z. Wang, A.S. Shedbale, Sachin Kumar, L.H. Poh, “Localizing gradient damage model with micro inertia effect for dynamic fracture”, Computer Methods in Applied Mechanics and Engineering, pp. 492–512, Vol. 355, 2019. Elsevier, IF-6.756

24. Sachin Kumar, I.V. Singh, B.K Mishra, Kamal Sharma and I.A. Khan, “A homogenized multigrid XFEM to predict the crack growth behaviour of ductile material in the presence of microstructural defects”, Engineering Fracture Mechanics, pp. 577-602, Vol. 205, 2019. Elsevier, IF-4.406

Year: 2018

25. Sachin Kumar, Yihe Wang, L.H. Poh, B. Chen, Floating node method with domain-based interaction integral for generic 2D crack growths, Theoretical and Applied Fracture Mechanics, pp. 483–496, Vol. 96, 2018. Elsevier, IF-4.017

26. Sachin Kumar, G. Bhardwaj, “A new enrichment scheme in XFEM to model crack growth behavior in ductile materials", Theoretical and Applied Fracture Mechanics, pp. 296–307, Vol. 96, 2018. Elsevier, IF-4.017

27. J.G. Verma, Sachin Kumar, P.K. Kankar, “Crack growth modeling in spur gear tooth and its effect on mesh stiffness using extended finite element method”, Engineering Failure Analysis, pp. 109-120, Vol. 94, 2018. Elsevier, IF-3.114

Till 2017

28. Sachin Kumar, A. S. Shedbale, I. V Singh, B. K. Mishra, "Elasto-Plastic Fatigue Crack Growth Simulations in the Presence of Flaws using XFEM", Frontiers of Structural and Civil Engineering, pp. 420–440, Vol. 9, 2015. Springer, IF=2.370

29. Sachin Kumar, I. V Singh, B. K. Mishra, A. Singh, "New Enrichments in XFEM to Model Dynamic Crack Response of 2-D Elastic Solids", International Journal of Impact Engineering, pp. 198–211, Vol. 87, 2015. Elsevier, IF-4.208

30. Sachin Kumar, I. V Singh, B. K. Mishra, "A Homogenized XFEM Approach to Simulate Fatigue Crack Growth Problems", Computers & Structures, pp. 1–22, Vol. 150, 2015. Elsevier, IF-4.578

31. Sachin Kumar, I. V Singh, B. K. Mishra, T. Rabczuk, "Modeling and Simulation of Kinked Cracks by Virtual Node XFEM", Computer Methods in Applied Mechanics and Engineering, pp. 1425–1466, Vol. 283, 2015. Elsevier, IF-6.756

32. Sachin Kumar, I. V Singh, B. K. Mishra, "A Multigrid Coupled (FE-EFG) Approach to Simulate Fatigue Crack Growth in Heterogeneous Materials", Theoretical and Applied Fracture Mechanics, pp. 121–135, Vol. 72, 2014. Elsevier, IF-4.017

33. Sachin Kumar, I. V Singh, B. K. Mishra, "A Coupled Finite Element and Element-Free Galerkin Approach for the Simulation of Stable Crack Growth in Ductile Materials", Theoretical and Applied Fracture Mechanics, pp. 49–58, Vol. 70, 2014. Elsevier, IF-4.017

34. Sachin Kumar, I. V Singh, B. K. Mishra, "XFEM Simulation of Stable Crack Growth using J-R Curve under Finite Strain Plasticity", International Journal of Mechanics and Materials in Design, pp. 165–177, Vol. 10, 2014. Springer, IF-4.011

International Conferences:

1. Umed Singh, and Sachin Kumar, “Failure analysis of quasi-brittle materials using CZM based floating node method”, 67th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM), December 14-16, 2022, IIT, Mandi, India.

2. R. Premanandan, A. Chilkoti, D. Rathore, A. Soni, and Sachin Kumar, “Design of a Bone-Inspired Composite”, 67th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM), December 14-16, 2022, IIT, Mandi, India.

3. Alok Negi, Sachin Kumar, “A continuous-discontinuous damage model with micromorphic stress-based anisotropic nonlocal interactions, 14th World Congress in Computational Mechanics (WCCM) ECCOMAS Congress 2020, January 11-15, 2021, Paris, France (Online).

4. Aakash Soni, Sachin Kumar, Navin Kumar “Crack Propagation Study in a Cortical Bone using Isogeometric Analysis”, 64th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2019), December 09-12, 2019, Indian Institute of Technology Bhubaneswar, India.

5. Alok Negi, Sachin Kumar, “Modeling Size Effects in Quasi-Brittle Materials using a Smoothed Stress-based Localizing Damage Model”, 64th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2019), December 09-12, 2019, Indian Institute of Technology Bhubaneswar, India.

6. Umed Singh, Sachin Kumar, “Failure Analysis of Quasi-Brittle Materials using Cohesive Zone Model Assisted XFEM”, 64th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2019), December 09-12, 2019, Indian Institute of Technology Bhubaneswar, India.

7. Margi Gajjar, Himanshu Pathak, Sachin Kumar, “A Comparative Study of Linear Elastic and Elasto-Plastic Fracture Modeling by XFEM”, 9th International Conference of Materials Processing and Characterization (ICMPC-2019), March 08-10, 2019, Hyderabad, India.

8. Alok Negi, Sachin Kumar, “Crack Growth Simulation in Quasi-Brittle Materials using a Localized Gradient Damage Model”, 63rd Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2018), December 20-23, 2018, Dayananda Sagar University, Bengaluru, India.

9. Jay Govind Verma, P.K. Kankar, Sachin Kumar, “Crack Propagation Behavior in Spur Gear by XFEM and Its Influence on Dynamic Characteristics”, 1st International and 4th National Conference on “Reliability and Safety Engineering (INCRS 2018), February 26-28, 2018, PDPM IIITDM Jabalpur, India.

10. Sachin Kumar, L.H. Poh, Boyang Chen, “A Floating Node Method for the Crack Growth Analysis of Brittle Materials”, 14th U.S. National Congress on Computational mechanics (USNCCM14), July 17-20, 2017, Montreal, Canada

11. Sachin Kumar, I.V. Singh, B.K. Mishra, M. Dwivedy, “Interfacial Fatigue Crack Growth Analysis in Ductile Materials using XFEM, 60th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2015), December 16-19, MNIT, Jaipur, India.

12. I. V. Singh, B. K. Mishra, Sachin Kumar, A. S. Shedbale, "Nonlinear Fatigue Crack Growth Analysis of a Center Crack Plate by XFEM", 3rd International Conference on Materials Processing and Characterization, March 8–9, 2014, GRIET, Hyderabad, India.

13. Rajat Pratap, Sachin Kumar, I. V. Singh, B. K. Mishra, "Strain Energy Based Semi-homogenized XFEM Approach to Simulate Heterogeneous Problems", International Conference on Multifunctional Materials, Structures and Applications (ICMMSA-2014), pp. 123–126, December 22–24, 2014, MNNIT Allahabad, Uttar Pradesh, India.

14. Sachin Kumar, I. V. Singh, B. K. Mishra, R. Cardoso, J. W. Yoon, "A Multigrid XFEM Approach for the Elasto-Plastic Simulation of Bi-material Interfacial Cracks”, Ist International on Structural Integrity (ICONS-2014), pp. 642–649, February 4–7, 2014, Kalpakkam, Chennai, India.

15. Sachin Kumar, I. V. Singh, B. K. Mishra, "A Coupled Approach for the Simulation of Fatigue Crack Growth Problems", 58th congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2013), December 18–21, 2013, BESU, Kolkata, India.

16. Sachin Kumar, I. V. Singh, B. K. Mishra, "Ductile Crack Growth Simulations under Mode-I Loading using CTOA Criterion", Ist International and 16th National Conference on Machines and Mechanism (INACOMM-2013), pp. 217–223, December 18–20, 2013 IIT Roorkee, Roorkee, India.

17. Sachin Kumar, I. V. Singh, B. K. Mishra, "A Coupled Meshfree-Finite Element Method for the Simulation of Large Deformation Problems", International Conference on Smart Technologies for Mechanical Engineering (STME-2013), October 25–26, 2013 DTU, Delhi, India.

18. Sachin Kumar, I. V Singh, B. K. Mishra (2013), "Numerical Investigation of Stable Crack Growth in Ductile Materials using XFEM", International Conference on Design and Manufacturing (IConDM-2013), July 18–20, IIITD&M, Kancheepuram, Chennai, India.

19. Sachin Kumar, I. V. Singh, B. K. Mishra, "XFEM Simulation of Stable Crack Growth using J-R Curve", 57th congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM 2012), pp. 169–175, December 18–21, 2012, DIAT, Pune, India.