International Journal of Composite Materials

The International Journal of Composite Materials is a bimonthly peer-reviewed scientific journal. The journal covers all scientific and technological aspects of composite materials and their structures, including physical, chemical, artificial, mechanical, and other properties of Composite Materials as well as microscopic to macroscopic behavior studied both experimentally and theoretically.

Florin Bobaru

Editorial Board Member of International Journal of Composite Materials

Associate Professor, Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA

Research Areas

Computational Analysis of Composites

Experience

April-August 2011Visiting Associate Professor, Department of Mechanical and Civil Engineering, California Institute of Technology, Pasadena, California, USA
January-March 2009Visiting Scholar, Multiscale Dynamic Material Modeling Department, Sandia National Laboratories, Albuquerque, New Mexico, USA
September-December 2008Visiting Scholar, Fracture Group, Cavendish Laboratory, University of Cambridge, Cambridge, U.K.
2007-presentUniversity of Nebraska-Lincoln, Associate Professor, Department of Engineering Mechanics
2001-2007University of Nebraska-Lincoln, Assistant Professor, Department of Engineering Mechanics
2002-2004, 2005Sandia National Laboratories, Computer Science Research Institute, Albuquerque, NM. Summer Research Fellow
1996-2000Cornell University, Ithaca, NY. Graduate Teaching and Research Assistant

Membership

American Society of Mechanical Engineers (ASME): since 2000.
U.S. Association on Computational Mechanics (USACM): since 1999. Chair of the Committee on Materials Modeling (since 2009)
Society for Industrial and Applied Mathematics (SIAM): since 2001.
International Society for Structural and Multidisciplinary Optimization (ISSMO): 2001.

Publications: Journals

[1]  F. Bobaru and W. Hu, “The meaning, selection, and use of the Peridynamic horizon and its relation to crack branching in brittle materials” International Journal of Fracture, in print, DOI: 10.1007/s10704-012-9725-z (2012).
[2]  W. Hu, YD. Ha, F. Bobaru, and S.A. Silling, “The formulation and computation of the nonlocal J-integral in bond-based Peridynamics”, International Journal of Fracture, in print (2012).
[3]  W. Hu, YD. Ha, and F. Bobaru, “Peridynamic model for dynamic fracture in unidirectional fiber-reinforced composites”, Computer Methods in Applied Mechanics and Engineering, 217–220: 247–261 (2012).
[4]  F. Bobaru and M. Duangpanya, “A Peridynamic Formulation for Transient Heat Conduction in Bodies with Evolving Discontinuities”, Journal of Computational Physics, 231(7): 2764-2785 (2012).
[5]  YD. Ha and F. Bobaru, “Characteristics of dynamic brittle fracture captured with peridynamics”, Engineering Fracture Mechanics, 78: 1156–1168 (2011).
[6]  F. Bobaru and YD. Ha, “Adaptive refinement and multiscale modeling in 2D Peridynamics”, International Journal for Multiscale Computational Engineering, 9(6): 635-659 (2011).
[7]  F. Bobaru, “Peridynamics and Multiscale Modeling” Editorial in Special Issue on “Advances in Peridynamics”, International Journal for Multiscale Computational Engineering, 9(6): vii-ix (2011).
[8]  W. Hu, YD. Ha, and F. Bobaru. “Modeling Dynamic Fracture and Damage in Fiber-Reinforced Composites with Peridynamics”, International Journal for Multiscale Computational Engineering, 9(6): 707–726 (2011).
[9]  A.L. Collins, J.W. Addiss, S.M. Walley, K. Promratana, F. Bobaru, W.G. Proud, D.M. Williamson, “The effect of rod nose shape on the internal flow fields during the ballistic penetration of sand”, International Journal of Impact Engineering, 38(12): 951-963 (2011).
[10]  F. Bobaru and M. Duangpanya, “The peridynamic formulation for transient heat conduction,” International Journal of Heat and Mass Transfer, 53(19-20): 4047-4059 (2010). doi:10.1016/j.ijheatmasstransfer.2010.05.024.
[11]  YD. Ha and F. Bobaru, “Studies of dynamic crack propagation and crack branching with peridynamics,” International Journal of Fracture, 162(1-2): 229-244 (2010). doi:10.1007/s10704-010-9442-4
[12]  S. A. Silling, O. Weckner, E. Askari, and F. Bobaru, “Crack nucleation in a peridynamic solid,” International Journal of Fracture, 162(1-2): 219-227 (2010). DOI: 10.1007/s10704-010-9447-z
[13]  K. Rattanadit, F. Bobaru, K. Promratana, J.A. Turner, “Force chains and resonant behavior in bending of a granular layer on an elastic support”, Mechanics of Materials, 41(6): 691-706 (2009).
[14]  F. Bobaru, J.S. Chen, J.A. Turner, “Advances in the Dynamics of Granular Materials”, Editorial in Special Issue on Advances in the Dynamics of Granular Materials, Mechanics of Materials, 41(6): 635-636 (2009).
[15]  F. Bobaru, M. Yang, L.F. Alves, S.A. Silling, E. Askari, and J. Xu, “Convergence, adaptive refinement, and scaling in 1D peridynamics”, International Journal for Numerical Methods in Engineering, 77: 852-877 (2009).
[16]  P. Qiao, M. Yang, and F. Bobaru, “Impact mechanics and high-energy absorbing materials: review”, Journal of Aerospace Engineering 21(4): 235-248 (2008).
[17]  F. Bobaru, “Influence of van der Waals forces on increasing the strength and toughness in dynamic fracture of nanofiber networks: a peridynamic approach”, Modelling and Simulation in Materials Science and Engineering 15: 397-417 (2007).
[18]  F. Bobaru, “Designing optimal volume fractions for functionally graded materials with temperature-dependent material properties”, Journal of Applied Mechanics, 74: 861-874 (2007).
[19]  W. Kang, J.A. Turner, F. Bobaru, L. Yang, and K. Rattanadit, “Granular layers on vibrating plates: Effective bending stiffness and particle-size effects”. Journal of the Acoustical Society of America, 121, 888-896 (2007).
[20]  F. Bobaru and S. Rachakonda, “E(FG)2: a new fixed-grid shape optimization method based on the element-free Galerkin meshfree analysis”, Structural and Multidisciplinary Optimization 32(3): 215-228 (2006).
[21]  R.K. Lakkaraju, F. Bobaru, and S.L. Rohde, “Optimization of multilayer wear-resistant thin films using finite element analysis on stiff and compliant substrates”, Journal of Vacuum Science and Technology (A) - 24 (1): 146-155 (2006).
[22]  S.A. Silling and F. Bobaru, “Peridynamic modeling of membranes and fibers”, International Journal of Non-Linear Mechanics, 40(2-3): 395-409 (2005).
[23]  F. Bobaru and S. Rachakonda, “Optimal shape profiles for cooling fins of high and low conductivity”, International Journal of Heat and Mass Transfer, 47(23): 4953-4966 (2004).
[24]  F. Bobaru and S. Rachakonda, “Boundary layer in shape optimization of convective fins using a meshfree approach”, International Journal for Numerical Methods in Engineering, 60(7): 1215-1236 (2004).
[25]  F. Bobaru and Subrata Mukherjee, “Meshless approach to shape optimization of linear thermoelastic solids”, International Journal for Numerical Methods in Engineering, 53(4): 765-796 (2002).
[26]  F. Bobaru and S. Mukherjee, “Shape Sensitivity Analysis and Shape Optimization in Planar Elasticity Using the Element-Free Galerkin Method”, Computer Methods in Applied Mechanics and Engineering, 190(32-33) 4319-4337 (2001).
[27]  F. Bobaru, “Prestressed Elastic Solid Containing a Crack, Subjected to Normal or Tangential Loadings”, Revue Roumaine des Science Technique, Serie de Mecanique Applique, 41(5-6): 421-429 (1996).

Publications: Conferences/Workshops/Symposiums

[1]  W. Hu, Y.D. Ha, and F. Bobaru, “Peridynamic models for dynamic fracture in an asymmetrically loaded unidirectional composite”, Proceedings of the Computational Structural Engineering Institute of Korea (COSEIK) Annual Conference, Seoul, April 12-13, Korea (4pp) (2012).
[2]  F. Bobaru, and Y.D. Ha, “Peridynamic modeling of dynamic brittle fracture in a multi-layered glass system”, Proceedings of SAMPE 2012, Baltimore, May 22-24, USA (10pp) (2012).
[3]  Y.D. Ha, and F. Bobaru, “Dynamic brittle fracture captured with peridynamics”, Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition IMECE 2011, November 11-17, 2011, Denver, Colorado, USA (6pp), IMECE-65515 (2011).
[4]  J. Addiss, A. Collins, F. Bobaru, K. Promratana, and W. G. Proud, “Dynamic behaviour of granular materials at impact”, The 9th International DYMAT Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading (6pp), (2009).
[5]  E. Askari, F. Bobaru, R. B. Lehoucq, M. L. Parks, S. A. Silling, and O. Weckner, "Peridynamics for multiscale materials modeling," Scidac 2008. Journal of Physics: Conference Series, Vol. 125 (2008) 012078 (11pp). DOI: 10.1088/1742-6596/125/1/012078
[6]  F. Bobaru, K. Rattanadit, and J. A. Turner, “Coupled Dem-Fem For Modeling Granular Layers On Vibrating Elastic Structures” Int. Conf. on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2007, M. Papadrakakis, E. Oñate and B. Schrefler (Eds), CIMNE, Barcelona, (2007).
[7]  J.A. Turner, W. Kang, F. Bobaru, L. Yang, and K. Rattanadit, “Influence of Particle Size on the Vibration of Plates Loaded with Granular Material”, in Proceedings of SPIE Vol. 6217, 621710, pp: 1-8 (2006).
[8]  F. Bobaru, S.A. Silling, and H. Jiang, “Peridynamic fracture and damage modelling of membranes and nanofiber networks”, Proceedings of the XI International Conference on Fracture, Turin, Italy, March 20-25, 5748, pp: 1-6 (2005).
[9]  R.K. Lakkaraju, F. Bobaru, and S.L. Rohde, “Optimization of Multilayer Wear-resistant Thin Films Using Finite Element Analysis”, in Tribological and Decorative Coating, the 48th SVC Technical Conference Proceedings, ISSN 0737-5921, pp: 604-609 (2005).
[10]  F. Bobaru and H. Jiang, “Optimization of functionally graded materials with temperature dependent properties: a meshfree solution”. The XXI International Congress of Theoretical and Applied Mechanics, August 2004, Warsaw, Poland, ISBN 83-89687-01-1, 12789:1-2 (2004).
[11]  F. Bobaru and S.A. Silling, “Peridynamic 3D models of nanofiber networks and carbon nanotube-reinforced composites”, in Materials Processing and Design: Proceedings of Numiform 2004, the 8th International Conference on Numerical Methods in Industrial Forming Processes, American Institute of Physics, pp:1565-1570 (2004).
[12]  F. Bobaru and S.A. Silling, “Modeling and simulation of nanofiber porous membranes and carbon nanotube-reinforced composites”. The 2003 SIAM Conference on Mathematics for Industry: Challenges and Frontiers, Toronto, Canada, October 13-15, pp: 30-31 (2003).
[13]  F. Bobaru and S. Rachakonda, “Numerical Optimal Shape Design of Natural Convection Cooled Fins: Accounting for the Thermal Boundary Layer”, in Proceedings of The 5th International Congress on Thermal Stresses and Related Topics, Volume 2. Blacksburg, VA, USA, June 8-11, pp: WA-7-2-1 to WA-7-2-4 (2003).
[14]  F. Bobaru and S. Rachakonda, “Meshfree method for Shape Optimization of Cooling Fins: Shape Dependence on Conductivity Parameters”, in Papers of The Fifth World Congress On Structural And Multidisciplinary Optimization, Lido di Jesolo-Venice, Italy, May 19-23, pp: 429- 430 (2003).