Journal Publications

M.N. Das, R. Ranjan, K. Wu, J. Wu, and C. Ayas, A physics-motivated geometric method for overheating prevention in topology optimization for additive manufacturing, Computer Methods in Applied Mechanics and Engineering, Volume 447, 2025, 118363, https://doi.org/10.1016/j.cma.2025.118363
R. Ranjan, Z. Chen, C. Ayas, M. Langelaar and F. Van Keulen, Overheating control in additive manufacturing using a 3D topology optimization method and experimental validation, Additive Manufacturing, Volume 61, 2023, 103339, ISSN 2214-8604, https://doi.org/10.1016/j.addma.2022.103339
R. Ranjan, C. Ayas, M. Langelaar and F. Van Keulen, Controlling local overheating in topology optimization for additive manufacturing. Struct Multidisc Optim 65, 162 , 2022, https://doi.org/10.1007/s00158-022-03258-1

R. Ranjan, C. Ayas, M. Langelaar and F. Van Keulen, Fast Detection of Heat Accumulation in Powder Bed Fusion Using Computationally Efficient Thermal Models. Materials, 2020, 13, 4576. https://doi.org/10.3390/ma13204576

R. Ranjan, M. Langelaar, F. Van Keulen and C. Ayas, Classification and analysis of common simplifications in part-scale thermal modelling of metal additive manufacturing processes. Advanced Modeling and Simulation in Engineering Sciences, 10, 15, 2023, https://doi.org/10.1186/s40323-023-00253-z

R. Samant, R. Ranjan, K. Mhapsekar and S. Anand, Octree data structure for support accessibility and removal analysis in additive manufacturing, Additive Manufacturing, Volume 22, 2018, Pages 618-633, ISSN 2214-8604, https://doi.org/10.1016/j.addma.2018.05.031

R. Ranjan, R. Samant and S. Anand, Integration of Design for Manufacturing Methods With Topology Optimization in Additive Manufacturing. ASME. J. Manuf. Sci. Eng. June 2017; 139(6): 061007https://doi.org/10.1115/1.4035216

Conference Publications

R. Ranjan, Z. Chen, C. Ayas, M. Langelaar and F. Van Keulen. A physics-based topology optimization method for enhancing precision in metal AM parts, In: Proceedings of ASPE and Euspen Summer Topical Meeting on Advancing Precision in Additive Manufacturing, Knoxville, United States, 2022. Link

R. Ranjan, M. Bayat, C. Ayas, M. Langelaar and F. Van Keulen. Reducing computational expenses associated with thermal modeling of additive manufacturing, In: Proceedings of 14th World Congress on Computational Mechanics. Virtual event, 2021. Video presentation PDF

R. Ranjan, C. Ayas, M. Langelaar and F. Van Keulen. Detecting Heat Accumulation in Additive Manufacturing Parts using Computationally Efficient Thermal Models, In: Proceedings of International conference on Simulation for Additive Manufacturing (Sim-AM), 2019. PDF

M. Sinico, R. Ranjan, M. Moshiri, C. Ayas, M. Langelaar, A. Witvrouw, F. van Keulen, W. Dewulf. A mold insert case study on Topology Optimized design for Additive Manufacturing, In: Proceedings of Solid Freeform Fabrication Symposium, Austin (TX), USA, 2019. PDF

U. Paggi, R. Ranjan, L. Thijs, C. Ayas, M. Langelaar, F. van Keulen, B. Van Hooreweder. New support structures for reduced overheating on downfacing regions of direct metal printed parts, In: Proceedings of Solid Freeform Fabrication Symposium, Austin (TX), USA, 2019. PDF

R. Ranjan, C. Ayas, M. Langelaar and F. Van Keulen. Towards design for precision additive manufacturing: A simplified approach for detecting heat accumulation, In: Proceedings of Advancing Precision in Additive Manufacturing. Berkeley, USA, 2018. PDF

R. Ranjan, Y. Yang, C. Ayas, M. Langelaar and F. Van Keulen. Controlling local overheating in additive manufacturing parts using topology optimization, 10th European Solid Mechanics Conference, Bologna, Italy, 2018. PDF

R. Ranjan, Y. Yang, C. Ayas, M. Langelaar and F. Van Keulen. Controlling Local Overheating in Topology Optimization for Additive Manufacturing, In: Proceedings of Special Interest Group Meeting: Additive Manufacturing, Leuven, Belgium, 2017. PDF

R. Ranjan, R. Samant and S, Anand. Design for Manufacturability in Additive Manufacturing Using a Graph Based Approach, In: Proceedings of the ASME 2015 International Manufacturing Science and Engineering Conference, Charlotte, North Carolina, USA, 2015. Link

Book chapter

R. Ranjan, C. Ayas, M. Langelaar and F. Van Keulen. Topology Optimization Techniques. In: Precision Metal Additive Manufacturing, Eds. by R. Leach and S. Carmignato, CRC press, pp. 11–34, 2020. Link

Doctoral Thesis

Ranjan, R. (2023). Efficient Thermal Modelling and Topology Optimization for Additive Manufacturing. https://doi.org/10.4233/uuid:43ed643d-0934-4f5c-a0e9-16d66b6c6c50 PDF 5 min Video summary

Reviewer