Development of New Control Techniques for Vibration Isolation of Structures using Smart Materials
In this paper, the effects of the restoring force device on the response of a space frame structure resting on sliding type of bearing with a restoring force device is studied. The NS component of the El - Centro earthquake and harmonic ground acceleration is considered for earthquake excitation. The structure is modeled by considering six-degrees of freedom (three translations and three rotations) at each node. The sliding support is modeled as a fictitious spring with two horizontal degrees of freedom. The response quantities considered for the study are the top floor acceleration, base shear, bending moment and base displacement. It is concluded from the study that the displacement of the structure reduces by the use of the restoring force device. Also, the peak values of acceleration, bending moment and base shear also decreases. The simulation results show the effectiveness of the developed and proposed method.
[1] Abe. M., Yoshida J. and Fujino Y., "Multiaxial behaviours of laminated
rubber bearings and their modeling I : Experimental study", Journal of
Structural Engineering, ASCE, Vol. 130, pp. 1119 - 1132, 2004.
[2] Abe. M., Yoshida J. and Fujino Y., "Multiaxial behaviours of laminated
rubber bearings and their modeling II : Experimental study", Journal of
Structural Engineering, ASCE, Vol. 130, pp. 1133 - 1144, 2004.
[3] Arya A.S, Chandra B. and Qamaruddin M., "A new building system for
improved earthquake performance", Proc. of the Sixth Symposium of
Earthquake Engineering, University of Roorkee, India, 1978.
[4] Bhasker P. and Jangid R.S., "Experimental study of base isolated
structures", Journal of Earthquake Technology, ISET, Vol. 38, pp 1-15,
2001.
[5] Chalhoub, M.S., and Kelly J.M., "Sliders and tension controlled
reinforced bearings combined for earthquake isolation system",
Earthquake Engineering and Structural Dynamics, Vol. 19, 1990, pp.
333 - 358.
[6] Chopra. A.K., "Dynamic of structures : theory and applications to
earthquake engineering Second edition., Prentice Hall, Upper saddle
river, New Jersey, 2001.
[7] Jain S.K and Thakkar S.K., "Response control of buildings with rubber
bearings", International Journal of Structures, Vol. 18, No. 2, pp. 109 -
125, 1998.
[8] Jangid R.S. and Londhe Y.B., "Effectiveness of elliptical rolling rods for
base isolation", Journal of Structural Engineering, ASCE, Vol. 124, pp.
469 - 472, 1998.
[9] Jangid R.S., "Stochastic seismic response of structures isolated by
rolling rods", Journal of Engineering Structures, Vol. 22, pp. 937 - 946,
2000.
[10] Krishnamoorthy. A., "Effects of Damping Ratio of Restoring force
Device on Response of a Structure Resting on Sliding Supports with
Restoring Force Device", Electronics Journal of Structural Engineering,
eJSE Journal, pp. 55 - 68, Vol. 5, 2005.
[11] Krishnamoorthy. A., and Saumil P., "In plane response of a symmetric
space frame with sliding supports", International Journal of Applied
Science and Engineering, Vol. 3, pp. 1-11, 2005.
[12] Paz, M., "Structural Dynamics - Theory and Computation", 1991, Van
Nostrand Reinhold, New York, USA.
[13] Qamaruddin M., Arya A.S. and Chandra B.,"Seismic response of brick
buildings with sliding substructures", Journal of Structural
Engineering, ASCE, Vol. 112, pp. 558-572, 1986.
[14] Vafai. A., Hamidi M., and Ahmadi., "Numerical modeling of MDOF
structures with sliding supports using rigid plastic link", Earthquake
Engineering and Structural Dynamics, Vol. 30, 2001, pp. 27 - 42.
[15] Yang, Y.B., Lee T.Y., and Tsai I.C., "Response of multi - DOF
structures with sliding supports", Earthquake engineering and Structural
Dynamics, Vol. 19, 1990, pp. 739 - 752.
[16] Zayas. V.A., Low. S.S., and Mahin. S.A., "A simple pendulum technique
for achieving seismic isolation", Earthquake Spectra, Vol. 6, 1990, pp.
317 - 333.
[1] Abe. M., Yoshida J. and Fujino Y., "Multiaxial behaviours of laminated
rubber bearings and their modeling I : Experimental study", Journal of
Structural Engineering, ASCE, Vol. 130, pp. 1119 - 1132, 2004.
[2] Abe. M., Yoshida J. and Fujino Y., "Multiaxial behaviours of laminated
rubber bearings and their modeling II : Experimental study", Journal of
Structural Engineering, ASCE, Vol. 130, pp. 1133 - 1144, 2004.
[3] Arya A.S, Chandra B. and Qamaruddin M., "A new building system for
improved earthquake performance", Proc. of the Sixth Symposium of
Earthquake Engineering, University of Roorkee, India, 1978.
[4] Bhasker P. and Jangid R.S., "Experimental study of base isolated
structures", Journal of Earthquake Technology, ISET, Vol. 38, pp 1-15,
2001.
[5] Chalhoub, M.S., and Kelly J.M., "Sliders and tension controlled
reinforced bearings combined for earthquake isolation system",
Earthquake Engineering and Structural Dynamics, Vol. 19, 1990, pp.
333 - 358.
[6] Chopra. A.K., "Dynamic of structures : theory and applications to
earthquake engineering Second edition., Prentice Hall, Upper saddle
river, New Jersey, 2001.
[7] Jain S.K and Thakkar S.K., "Response control of buildings with rubber
bearings", International Journal of Structures, Vol. 18, No. 2, pp. 109 -
125, 1998.
[8] Jangid R.S. and Londhe Y.B., "Effectiveness of elliptical rolling rods for
base isolation", Journal of Structural Engineering, ASCE, Vol. 124, pp.
469 - 472, 1998.
[9] Jangid R.S., "Stochastic seismic response of structures isolated by
rolling rods", Journal of Engineering Structures, Vol. 22, pp. 937 - 946,
2000.
[10] Krishnamoorthy. A., "Effects of Damping Ratio of Restoring force
Device on Response of a Structure Resting on Sliding Supports with
Restoring Force Device", Electronics Journal of Structural Engineering,
eJSE Journal, pp. 55 - 68, Vol. 5, 2005.
[11] Krishnamoorthy. A., and Saumil P., "In plane response of a symmetric
space frame with sliding supports", International Journal of Applied
Science and Engineering, Vol. 3, pp. 1-11, 2005.
[12] Paz, M., "Structural Dynamics - Theory and Computation", 1991, Van
Nostrand Reinhold, New York, USA.
[13] Qamaruddin M., Arya A.S. and Chandra B.,"Seismic response of brick
buildings with sliding substructures", Journal of Structural
Engineering, ASCE, Vol. 112, pp. 558-572, 1986.
[14] Vafai. A., Hamidi M., and Ahmadi., "Numerical modeling of MDOF
structures with sliding supports using rigid plastic link", Earthquake
Engineering and Structural Dynamics, Vol. 30, 2001, pp. 27 - 42.
[15] Yang, Y.B., Lee T.Y., and Tsai I.C., "Response of multi - DOF
structures with sliding supports", Earthquake engineering and Structural
Dynamics, Vol. 19, 1990, pp. 739 - 752.
[16] Zayas. V.A., Low. S.S., and Mahin. S.A., "A simple pendulum technique
for achieving seismic isolation", Earthquake Spectra, Vol. 6, 1990, pp.
317 - 333.
@article{"International Journal of Architectural, Civil and Construction Sciences:62407", author = "Shubha P Bhat and Krishnamurthy and T.C.Manjunath and C. Ardil", title = "Development of New Control Techniques for Vibration Isolation of Structures using Smart Materials", abstract = "In this paper, the effects of the restoring force device on the response of a space frame structure resting on sliding type of bearing with a restoring force device is studied. The NS component of the El - Centro earthquake and harmonic ground acceleration is considered for earthquake excitation. The structure is modeled by considering six-degrees of freedom (three translations and three rotations) at each node. The sliding support is modeled as a fictitious spring with two horizontal degrees of freedom. The response quantities considered for the study are the top floor acceleration, base shear, bending moment and base displacement. It is concluded from the study that the displacement of the structure reduces by the use of the restoring force device. Also, the peak values of acceleration, bending moment and base shear also decreases. The simulation results show the effectiveness of the developed and proposed method.", keywords = "DOF, Space structures, Acceleration, Excitation, Smart structure, Vibration, Isolation, Earthquakes.", volume = "2", number = "2", pages = "38-7", }
