Çağlar Oskay, Ph.D.

Assistant Professor
Civil and Environmental Engineering Department
Vanderbilt University

VU Station B # 351831
2301 Vanderbilt Place
Nashville, TN 37235

Tel: (615) 343-0583

Fax: (615) 322-3365

Summary

Dr. Oskay concentrates his research efforts to bringing understanding to multi-scale, multi-physics problems through computational modeling and simulation. Dr. Oskay research focus is on computational characterization of the failure response of systems that involve multiple temporal and spatial scales, development of computational methodologies for failure and fragmentation of composite systems subjected to extreme loading conditions including impact, blast and crushing loads, characterization of complex, hybrid and bio-composite systems, and analysis of multiphysics problems.

Research Interests

· Multiscale Computational Modeling of Solids and Structures

· Life Prediction and Performance Assessment of Structures

· Computational Modeling of Composites

· Modeling of Multiphysics Systems

Education

Ph.D.	Civil Engineering	Rensselaer Polytechnic Institute	2003
M.Sc.	Civil Engineering	Rensselaer Polytechnic Institute	2001
M.Sc.	Applied Mathematics	Rensselaer Polytechnic Institute	2000
B.Sc.	Civil Engineering	Middle East Technical University	1998

Journal Publications

C. Oskay and G. Pal, “A multiscale model for analysis of thin heterogeneous plates,” International Journal of Damage Mechanics, Special Issue on Multiscale Damage and Failure Mechanics, in review, 2008.

C. Oskay and J. Fish, “On calibration and validation of eigendeformation-based multiscale models for failure analysis of heterogeneous materials,” Computational Mechanics, in press, DOI: 10.1007/s00466-007-0197-3, 2008.
C. Oskay and J. Fish, “Eigendeformation-based Reduced Order Homogenization for Failure Analysis of Heterogeneous Materials,” Computer Methods in Applied Mechanics and Engineering, 196(7):1216-1243, 2007.
M. Zeghal, P. V. Kallou, C. Oskay, T. Abdoun and M. K. Sharp, “Identification and Imaging of Soil and Soil-Pile Deformation in the Presence of Deformation,” Earthquake Engineering and Engineering Vibration, 5(2):1-12, 2006.
J. Fish and C. Oskay, “A nonlocal multiscale fatigue model,” Mechanics of Advanced Materials and Structures, 12(6):485-500, 2005.
C. Oskay and J. Fish, “Multiscale modeling of fatigue for ductile materials,” International Journal for Computational Multiscale Engineering, 4(3), 2004.
C. Oskay and J. Fish, “Fatigue life prediction using 2-scale temporal asymptotic homogenization,” International Journal for Numerical Methods in Engineering, 61:329-359 2004.
M. Zeghal and C. Oskay, “A local identification technique for geotechnical and geophysical systems,” International Journal for Numerical and Analytical Methods in Geomechanics, 27:967-987, 2003.
M. Zeghal and C. Oskay, “Local system identification analyses of the dynamic response of soil systems,’’ Soil Dynamics and Earthquake Engineering, 22:985-993, 2002.
C. Oskay and M. Zeghal, “Geotechnical system identification: a survey,” Progress in Structural Engineering and Materials, accepted, 2006.

Other Publications

1. C. Oskay and J. Fish, “A multiscale model of composite failure under impact,” Proceedings of the ASME International Mechanical Engineering Congress and Exposition, Chicago, IL, November 5-10, 2006.

2. C. Oskay and J. Fish, “Multiscale modeling of heterogeneous materials with interface damage,” Proceedings of the 8^th US National Congress on Computational Mechanics, Austin, TX, July 24-28, 2005.

3. C. Oskay and J. Fish, “A nonlocal multiscale model for fatigue,” Proceedings of the 8^th US National Congress on Computational Mechanics, Austin, TX, July 24-28, 2005.

4. J. Fish and C. Oskay, “A Multiscale model for crash prediction of composite cars,” Research Report, USCAR Energy Management Research Group, February 28, 2005.

5. J. Fish and C. Oskay, “Multiscale analysis of interfacial debonding under impact,” Research Report, USCAR Energy Management Research Group, May 24, 2005.

6. M. Zeghal, T. Abdoun and C. Oskay, "A Novel Shape-Acceleration Array and Local Identification of Geotechnical Systems," International Workshop for Site Selection, Installation and Operation of Geotechnical Strong-Motion Arrays: Inventory of Current and Planned Arrays, Los Angeles, CA, October 14-15, 2004.

7. C. Oskay, P. V. Kallou, M. Zeghal and T. Abdoun, “Visualization of the seismic response of soil systems,’’ Proceedings of the 1^stInternational Conference on Physical Modeling in Geotechnics, St. John’s, Newfoundland, Canada, July 2002.

8. C. Oskay and M. Zeghal, “Identification of the dynamic response of soil systems,” Proceedings of the 15^th ASCE Engineering Mechanics Division Conference, New York, NY, June 2-5, 2002.

9. T. Abdoun, C. Oskay, Y. Wang, C-J. Lee and M. Zeghal, “Visualization of measured quay wall seismic response,’’ Proceedings of the XV^th International Conference on Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, August 27-31, 2001.

10. C. Oskay and M. Zeghal, “Identification and analyses of the deformation of soil systems subjected to seismic excitations,’’ Proceedings of the XV^th International Conference on Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, August 27-31, 2001.

11. M. Zeghal, C. Oskay, M. K. Sharp and R. Dobry, “Visual interpretation of site dynamic response,’’ Proceedings of the 7th US-Japan Workshop on Earthquake Resistant Design of Lifeline Facilities and Countermeasures Against Liquefaction, Seattle, WA, August 15-17, 1999.

Research Group

· Robbie Crouch: Ph.D Thesis Topic: Characterization of fracture and fragmentation of heterogeneous materials subjected to impact loads (Expected Graduation: Spring 2011)

· Ghanshyam Pal: M.Sc. Thesis Topic: Multiscale modeling of failure of heterogeneous plates and shells (Expected Graduation: Spring 2008)

· Veda Laohom: M.Sc. Thesis Topic: Characterization of biodegradable bone/polyurethane composite fracture fixation devices. (Graduated: Spring 2007)

Courses Taught

· CE 240 Geotechnical Engineering (Fall’06-08)

· CE 302 Advanced Solid Mechanics II (Spring’07-08)

· CE 182 Mechanics of Materials (Fall’08)

Synergistic Activities

· Guest Editor for International Journal of Computational Multiscale Engineering (IJMCE)

· Member of ASME Committee on Computing in Applied Mechanics

Curriculum Vitae

Page maintained by: Caglar Oskay
Last modified: 25 July 2008