RESEARCH ACTIVITIES                                                                                       
 

On-Going Research Activities

  • Structural Dynamics and Earthquake Engineering

  • Structural Vibration Control Using Passive, Semi-Active and Active Control Systems

  • Smart Materials and Intelligent Structures

  • Benchmark Problem for Response Control of Wind-Excited Tall Buildings

  • System Identification

  • Health Monitoring of Structures

  • Performance Evaluation of Existing Structures Using Measurements

  • Development of Dynamics Laboratory Facility at the City College of New York

 

PUBLICATIONS                                                                                                    
 

Journals

  1. Agrawal, A.K., Fujino, Y. and Bhartia, B.K., "Instability Due To Time-Delay And Its Compensation In Active Control Of Structures", Journal of Earthquake Engineering and Structural Dynamics, Vol. 22, pp. 211-224 (1993).

  2. Agrawal, A.K., Kosaka, H. and Yamanaka, H., "Control Of Hysteretic System Using Velocity And Acceleration Feedbacks", Journal of Engineering Mechanics, ASCE, Vol. 120, No. 2, pp. 416-417 (1994).

  3. Agrawal, A.K., Kosaka, H. and Yamanaka, H., "Stability Of Active-Tendon Structural Control With Time-Delay", Journal of Engineering Mechanics, ASCE, Vol. 120, No. 10, pp. 2240-2243 (1994).

  4. Yang, J.N., Wu, J.C. and Agrawal, A.K., "Sliding Mode Control for Nonlinear and Hysteretic Structures", Journal of Engineering Mechanics, ASCE, Vol. 121, No. 12, pp. 1330-1339 (1995).

  5. Yang, J.N., Wu, J.C. and Agrawal, A.K., "Sliding mode Control for Seismic-excited Linear Structures", Journal of Engineering Mechanics, ASCE , Vol. 121, No. 12, pp. 1386-1390 (1995)

  6. Agrawal, A.K. and Yang, J.N., "Optimal Polynomial Control of Seismically Excited Linear Structures", Journal of Engineering Mechanics, ASCE, Vol. 122, No. 8. Pp. 753-761 (1996a).

  7. Yang, J.N., Agrawal, A.K. and Chen, S., "Optimal Polynomial Control For Seismically Excited Non-Linear And Hysteretic Structures", Journal of Earthquake Engineering & Structural Dynamics, Vol. 25, No. 11, pp. 1211-1230 (1996b).

  8. Agrawal, A.K. and Yang, J.N., "Optimal Polynomial Control for Civil Engineering Structures using Static Output feedback", The Chinese Journal of Mechanics, Vol. 12, No. 1, pp. 91-102 (1996c).

  9. Agrawal, A.K., Yang, J.N., Schmitendorf, W.E. and Jabbari, F., "Stability of Actively Controlled Structures with Actuator Saturation", Journal of Structural Engineering, ASCE, Vol. 123, No. 4, pp. 505-512 (1997).

  10. Agrawal, A.K. and Yang, J.N., "Static Output Polynomial Control for Linear Structures," Journal of Engineering Mechanics, ASCE, Vol. 123, No. 6, pp. 639-643 (1997b).

  11. Agrawal, A.K. and Yang, J.N., "Effect of Fixed Time-Delay on Stability and Performance of Actively Controlled Civil Engineering Structures", Journal of Earthquake Engineering and Structural Dynamics, Vol. 26, pp. 1169-1185 (1997c).

  12. Yang, J.N., Wu, J.C., Agrawal, A.K. and Hsu, S.Y., "Sliding Mode Control With Compensators for Wind and Seismic Response Control", Journal of Earthquake Engineering and Structural Dynamics, Vol. 26, pp. 1137-1156 (1997d).

  13. Agrawal, A.K., Yang, J.N. and Wu, J.C., "Nonlinear Control Strategies for Duffing Systems", International Journal of Non-linear Mechanics, Vol. 33, No. 5, pp. 829-841 (1998).

  14. Agrawal, A.K., Yang, J.N. and Wu, J.C., "Application of Optimal Polynomial Controller to a Benchmark Problem", Journal of Earthquake Engineering & Structural Dynamics , Vol. 27, No. 11, pp. 1291-1302.

  15. Wu, J.C., Yang, J.N. and Agrawal, A.K., "Applications of Sliding Mode Control to Benchmark Problems", Journal of Earthquake Engineering & Structural Dynamics, Vol. 27, No. 11, pp. 1247-1265.

  16. Yang, J.N. and Agrawal, A.K., "Optimal Polynomial Control for Seismic-Excited Structures", submitted for publication in the Journal of Engineering Mechanics (1999).

  17. Agrawal, A.K. and J.N. Yang (1999), "Compensation of Time-Delay for Control of Civil Engineering Structures", submitted for publication in Earthquake Engineering and Structural Dynamics (1999).

  18. Agrawal, A.K. and Yang, J.N., "Design of Passive Energy Dissipation Systems Using Modern Control Theories", to be submitted for publication in Journal of Intelligent Material Systems and Structures (April, 1999).

  19. Agrawal, A.K. and Yang, J.N., "Optimal Placement of Energy Dissipative Systems Using Combinatorial Optimization", to be submitted for publication in Journal of Intelligent Material Systems and Structures (April, 1999).

Conferences / Proceedings

  1. Jain, S.K., Tripathi, R.P., and Agrawal, A. K., "Geotechnical Damage due to Bihar Earthquake of August 1988", Proc. Second International Conference on Recent Advances in Geotechnical Engineering and Soil Dynamics, Missouri Rolla, pp. 519-524 (1991 ).

  2. Agrawal, A.K., Fujino, Y. and Bhartia, B.K., "Stability and Time-Delay Compensation of Actively Controlled Structures", Trans. of the Japan National Symposium on Active Structural Response Control, pp. 33-40 (1992).

  3. Kosaka, H., Noji, T., Yoshida, H., Tatsumi, E., Yamanaka, H. and Agrawal, A. K., "Damping Effects of a Vibration Control Damper Using Sloshing of Water", Proc. 10th World Conference on Earthquake Engineering, pp. 2435-2440 (1992).

  4. Kosaka, H., Agrawal, A.K., Yamanaka, H., Noji, T. and Noda, H., "Comparative Study of Wind Excited Tall Building Using Series and Parallel Type Hybrid Mass Dampers", Proc. 12th Symposium on Wind Engineering (Japan), pp. 309-314 (Dec. 1992).

  5. Tatsumi, E., Noji, T., Ito, Yamanaka, H., Kosaka, H. and Agrawal, Anil, "An Active Vibration Control System Using Tuned Mass Damper, Part 3: Outline of the Vibration Control Device and Control Method", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 889-890 (1992).

  6. Kosaka, H., Noji, T., Tatsumi, E., Yamanaka, H., and Agrawal, Anil, "An Active Vibration Control System Using Tuned Mass Damper, Part 4: Vibration Control Experiments", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 891-892 (1992).

  7. Yamanaka, H., Noji, T., Tatsumi, E., Kosaka, H., Agrawal, Anil and Noda, H., "An Active Vibration Control System Using Tuned Mass Damper, Part 5: Outline of the Vibration Control Device and Control Method", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 893-894 (1992).

  8. Agrawal, A.K., Kosaka, H., Yamanaka, H. and Noji, T., "Active Control Of Structures Using Velocity and Acceleration Feedbacks", Proc. of the 63rd Architectural Research Meetings, Kanto Chapter, Architectural Institute of Japan, pp. 41-44 (1993).

  9. Agrawal, A.K., Yamanaka, H. and Kosaka, H., "Weighting Matrices Satisfying Desired Pole Locations and Optimal Pole Locations in Active Structural Control", Proc. Structural Engineering Conference, Architectural Institute of Japan, Vol. 39B, pp. 185-192 (1993).

  10. Agrawal, A.K., Noji, T., Yamanaka, H. and Kosaka, H., "On Actuator Dynamics and the Effect of Neglecting it in Active Structural Control", Proc. of Motion and Vibration Control (MOVIC), Japan Society Of Mechanical Engineers, pp. 126-131 (1993).

  11. Agrawal, A.K., Kosaka, H. and Yamanaka, H., "Optimal Pole Placement in Active Control of Structures with Multi-Actuators", Proc. 2nd Colloquium on Vibration Control of Structure, Japan Society of Civil Engineering, pp. 191-198 (1993).

  12. Kosaka, H., Agrawal, A.K., Yamanaka, H. and Noji, T., "An Active Vibration Control System Using Tuned Mass Damper, Part 6: The Ratio of Moving Mass of the Actuator and the Mass of TMD", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 785-786 (Sept. 1993).

  13. Agrawal, A.K., Kosaka, H. and Yamanaka, H., "Active Control of Structures: Actuator Dynamics and the Effect of Neglecting It", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 717-718 (Sept. 1993).

  14. Yang, J.N., Agrawal, A.K. and Wu, J.C., "Sliding Mode Control for Structures Subjected to Seismic Loads", Proceedings of First World Conference on Structural Control, Pasadena, CA, pp. WA1-13 to WA1-22 (1994).

  15. Agrawal, A.K. and Kosaka, H., "On Optimality and Robustness in Linear Quadratic Optimal Control of Civil Engineering Structures", Proceedings of First World Conference on Structural Control, Pasadena, CA, FP1-43 to FP1-52 (1994).

  16. Kosaka, H., Noji, T., Tatsumi, E., Ito, Yamanaka, H., and Agrawal, Anil, "Study of Series Type Hybrid Mass Damper, Part 2: Real-time Online Response Experiment", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 949-950 (1994).

  17. Tatsumi, E., Noji, T., Ito, Yamanaka, H., Kosaka, H. and Agrawal, Anil, "Study of Series Type Hybrid Mass Damper, Part 1: Outline of S-HMD", Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Vol. B, pp. 947-948 (1994).

  18. Yang, J.N., Agrawal, A.K. and Chen, S., "Nonlinear Polynomial Optimal Control of Seismic-Excited Nonlinear or Hysteretic Civil Engineering Structures", Proc. Tenth VPI&SU Symposium on Structural Dynamics and Control, Blacksburg, VA, pp. 1-12 (1995).

  19. Agrawal, A.K. and Yang, J.N., "Nonlinear Optimal Control of Seismic-Excited Linear Structures", 1995 Engineering Mechanics Conference, edited by S. Sture, Vol. 2, pp. 1223-1226, ASCE Publication, Boulder, Co.(1995).

  20. Agrawal, A.K. and Yang, J.N., "Nonlinear Output Feedback Control of Seismic-Excited Linear Structures", 1995 American Control Conference, Seattle, pp. 1921-1925 (1995).

  21. Agrawal, A.K. and Yang, J.N., "Hybrid Control of Seismic Response Using Nonlinear Output Feedback", 12th Conference on Analysis and Computation, Proc. Of 1996 ASCE Structures Congress, Chicago, pp. 339-349, April 15-18, 1996.

  22. Agrawal, A.K., Das, A. and Yang, J.N., "Stability of Actively Controlled Civil Engineering Structures with Actuator Saturation", Proc. 11th ASCE Engineering Mechanics Conference, Ft. Lauderdale, Florida, pp. 756-759 (May, 1996).

  23. Agrawal, A.K. and Yang, J.N., "Nonlinear Polynomial Control of a Duffing System", Proc. 11th ASCE Engineering Mechanics Conference, Ft. Lauderdale, Florida, pp. 890-893 (May, 1996).

  24. Yang, J.N., Wu, J.C., Agrawal, A.K. and Hsu, S.Y., "Reduced-Order Sliding Mode Control With Compensators for Seismic Response Control", Proc. of 11th World Conf. on Earthquake Engrg., Paper No. 273, June 23-28, Acapulco, Mexico (1996).

  25. Wu, J.C., Agrawal, A.K. and Yang, J.N., "Application of Sliding Mode Control to a Benchmark Problem", in Building to Last, edited by Leon Kempner, Jr., P.E. and Colin B. Brown, Proceedings of ASCE Structures Congress XV, Portland, Oregon, April 13-16, pp. 1275-1279 (1997).

  26. Agrawal, A.K. and Yang, J.N., "Effect of Time-delay on Multi-Degree-of-Freedom Actively Controlled Civil Engineering", Proceedings of 1997 American Control Conference, Vol. 2, pp. 883-887, June 4-6, 1997, Albuquerque, New Mexico (1997).

  27. Yang, J.N., Wu, J.C., Samali, B. and Agrawal, A.K., "A Benchmark Problem for Response Control of Wind-Excited Tall Buildings", Benchmark Problem Package Available at the World Wide Website: http://www.eng.uci.edu/civil/civileng.html, 1997.

  28. Agrawal, A.K. and Yang, J.N., "Design of Passive Dampers Using Active Control Theories", Proceedings of 1998 Smart Materials and Structures, Paper No. 3325-24, March 1-6, San Diego, CA (1998).

  29. Agrawal, A.K. and Yang, J.N., "Compensation of Time-Delay for Active Control of Civil Engineering Structures", Proceedings of 12th Engineering Mechanics conference to be held in La Jolla, California, May 17-20 (1998).

  30. Agrawal, A.K., Yang, J.N. and Schmitendorf, W.E. , "Hybrid Control of Buildings Using Nonlinear Polynomial Output feedback", proceedings of the 1998 American Control Conference, 24-26 June, 1998, Philadelphia, PA (1998).

  31. Agrawal, A.K. and Yang, J.N., "Optimal Placement Of Energy Dissipative Systems Using Combinatorial Optimization", Proc. Structural Engineers World Congress, ASCE, July 19-23, 1998, San Francisco, CA (1998).

  32. Agrawal, A.K. and Yang, J.N., "Methods of Time-Delay Compensation for Active/Hybrid Control of Civil Engineering Structures", to be published in the Proceedings of Second World Conference on Structural Control, June 29-July 1, 1998, Kyoto, Japan (1998).

  33. Agrawal, A.K. and Yang, J.N., "Passive Damper Control of the 76-Story Wind-Excited Benchmark Building", to be published in the Proceedings of Second World Conference on Structural Control, June 29-July 1, 1998, Kyoto, Japan (1998).

  34. Yang, J.N., Wu, J.C., Samali, B. and Agrawal, A.K., "A Benchmark Problem for Response Control of Wind-Excited Tall Buildings", to be published in the Proceedings of Second World Conference on Structural Control, June 29-July 1, 1998, Kyoto, Japan (1998).

  35. Yang, J.N. and Agrawal, A.K. (1998), "Protective Systems for Microvibration of Buildings", Asia-Pacific Workshop on Seismic Design & Retrofit of Structures, August 10-12, 1998, Taiwan, pp. 319-333.

  36. Yang, J.N., Agrawal, A.K. and Kim, J.-H. (1999), "A Semi-Active Stiffness Damper for Vibration Control of Civil Engineering Structures", Proc. Of 17th International Modal Analysis Conference, Feb. 8-11, 1999, Orlando, FL, pp. 437-443.

  37. Yang, J.N., Agrawal, A.K. and Kim, J.-H. (1999), "A Semi-Active Stiffness Damper for Vibration Control", Proc. of US-Japan Workshop on Collaborative Research on Structural Control, Kyoto, Japan, Feb. 18-20, 1999.

  38. Yang, J.N., Kim, J.-H. and Agrawal, A.K. (1999), "Seismic Response Control Using A Semi-Active Stiffness Damper", to be published in the Proceedings of US-China Workshop to be held on May 6-8, 1999 in Guangzhou, PRC. 

  39. Agrawal, A.K. and Yang, J.N. (1999), "Stability of Actively Controlled Structures in the Presence of Neglected Second Order Actuator Dynamics and Fixed Time-Delay", to be published in Proc. of 13th ASCE Eng. Mech. Conf., June 13-16, 1999, Maryland.

  40. Agrawal, A.K. and Yang, J.N. (1999), "Effect of Actuator Dynamics and Fixed Time-Delay On The Stability Of Actively Controlled Structures", to be published in Proc. 1999 American Control Conference, June 2-4, San Diego, CA.

  41. Yang, J.N. and Agrawal, A.K. (1999), "Protection of Building Facilities Against Microvibration", to be published in the 1st International Conference on Advances in Structural Engineering and Mechanics (ASEM’99), 23-25 August 1999, Seoul, Korea.

Thesis/Reports

  1. Jain, S.K. and Agrawal Anil K. , "Dynamics of Offshore Piles, Interim Report - II: Analytical Solution for Free and Forced Vibrations", Department of Civil Engineering, I.I.T. Kanpur, India ( May 1988 ).

  2. Agrawal Anil K., "On Time-Delay In Active Control Of Structures", M.S. Thesis, Department of Civil Engineering, University of Tokyo (September 1991).

  3. Yang, J.N., Wu, J.C., Agrawal, A.K. and Li, Z., "Sliding Mode Control for Seismic-Excited Linear and Nonlinear Civil Engineering Structures", Technical Report NCEER-94-0017. National Center for Earthquake Engineering Research, (June 21, 1994).

  4. Agrawal, A.K. and Yang, J.N., "Nonlinear Optimal Polynomial Control for Linear and Nonlinear Structures", Technical Report NCEER-95-0019. National Center for Earthquake Engineering Research, (December 11, 1995).

  5. Agrawal Anil K., "Optimal Placement and Innovative Design of Energy Dissipation Systems for Civil Engineering Structures", Ph.D. Dissertation, Department of Civil Engineering, Univ. of California, Irvine, CA (August 1997).

 

PROJECTS                                                                                                             

 

 

 

 
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