Abstract
A relief valve parallel to the throttle valve is added to a Velocity dependent hydraulic damper (VDHD) so that the orifice size that regulates the oil flow can be adjusted. This device adjustment will allow the damper to have an adaptive control of damping by changing its damping coefficient. A mathematical model including a serial friction model and a small damper that is parallel to the friction model added to the Maxwell model for simulating the actual energy-dissipating behaviour of the VDHD was proposed in this research. To extend the useful value of VDHD, a numerical analysis model based on the SAP2000 nonlinear analysis programwas applied to simulate the energy-dissipating characteristics of VDHD in this study. The analysis results obtained by using the mathematical model and the proposed SAP2000 numerical model conform to the seismic resistant test results, and confirm that the SAP2000 nonlinear analysis program can accurately describe the actual energy-dissipating behaviour of the VDHD installed on structures under various energy-dissipating situations.
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Shih, M.H., Sung, W.P. & Wu, M.J. Development of numerical modelling of analysis program for energy-dissipating behaviour of velocity dependent hydraulic damper. Sadhana 35, 631–647 (2010). https://doi.org/10.1007/s12046-010-0038-5
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DOI: https://doi.org/10.1007/s12046-010-0038-5