NEHRP Clearinghouse

displaying 71 - 80 results in total 91

  • Sadek, F.; Mohraz, B.; Taylor, A. W.; Chung, R. M.
    Method of Estimating the Parameters of Tuned Mass Dampers for Seismic Applications.
    National Inst. of Standards and Technology (BFRL), Gaithersburg, MD. Structures Div., April 1996, 48 p.
    Keywords: Seismic loads; Structural vibration; Seismic waves; Tuning; Dynamic response; Buildings; Structural response; Energy dissipation; Degrees of freedom; Vibration damping; Earthquake engineering; Passive systems; Dampers; Loads (Forces); Seismic effects; Passive control

  • Sadek, F.; Mohraz, B.; Taylor, A. W.; Chung, R. M.
    Passive Energy Dissipation Devices for Seismic Applications.
    November 1996, 66 p.
    Identifying Number(s): NISTIR-5923
    Keywords: ; Vibration control; Performance evaluation; Vibration damping; Design analysis; Tuning; Viscosity; Structural vibration; Dampers; Seismic effects; Shape memory alloys; Friction; Earthquake resistance; Degrees of freedom; Ground motion; Earthquake engineering; Energy dissipation; Passive systems; Structural response; Viscoelasticity; Dynamic structural analysis

  • Sadek, F.; Mohraz, B.; Lew, H. S.
    Single and Multiple Tuned Liquid Column Dampers for Seismic Applications.
    November 1996, 43 p.
    Identifying Number(s): NISTIR-5920
    Keywords: Energy absorption; Loads (Forces); Liquid column dampers; Performance evaluation; Vibration damping; Acceleration; Design analysis; Tuning; Structural vibration; Seismic effects; Earthquake resistance; Dynamic response; Ground motion; Degrees of freedom; Energy dissipation; Earthquake engineering; Passive systems; Structural response; Dynamic structural analysis

  • Bradley, G. L.; Taylor, A. W.; Chang, P. C.
    Ultimate Capacity Testing of Laminated Elastomeric Base Isolation Bearings under Axial Loading.
    March 1997, 56 p.
    Identifying Number(s): NISTIR-6002
    Keywords: ; Elastomers; Seismic design; Compression tests; Standards; Research; Buildings; Earthquake engineering; Vibration damping; Vibration isolators; Bearings

  • Sadek, F.; Mohraz, B.
    Semi-Active Control Algorithms for Structures with Variable Dampers.
    October 1997, 50 p.
    Identifying Number(s): NISTIR-6052
    Keywords: ; Seismic design; Design; Algorithms; Buildings; Earthquake engineering; Vibration damping; Accelerometers; Dynamic structural analysis

  • Bradley, G. L.; Chang, P. C.; Taylor, A. W.
    Determination of the Ultimate Capacity of Elastomeric Bearings under Axial Loading.
    National Inst. of Standards and Technology (BFRL), Gaithersburg, MD. Structures Div., February 1998, 158 p.
    Keywords: ; Elastomers; Seismic design; Buildings; Earthquake engineering; Vibration damping; Tests; Bearings; Loads (Forces); Construction

  • Sadek, F.; Mohraz, B.; Riley, M. A.
    Linear Static and Dynamic Procedures for Structures with Velocity-Dependent Supplemental Dampers.
    May 1999, 60 p.
    Identifying Number(s): NISTIR-6329
    Keywords: Seismic effects; Structural vibration; Earthquake resistance; Performance evaluation; Degrees of freedom; Structural response; Energy dissipation; Static response; Vibration damping; Design analysis; Passive systems; Dampers; Building codes; Linearity; Dynamic structural analysis

  • Chang, T. S.; Singh, M. P.
    Study of Seismic Response of Rotating Machines Subjected to Multi-Component Base Excitations.
    National Science Foundation, Washington, DC., May 1992, 114 p.
    Identifying Number(s): VPI-E-92-11
    Keywords: ; Equations of motion; Seismic waves; Turbomachinery; Rotary stability; Mathematical models; Earthquake damage; Mechanical properties; Vibration damping; Displacement; Seismic effects; Rotating electrical machines

  • Yang, J. N.; Danielians, A.
    Two Hybrid Control Systems for Building Structures under Strong Earthquakes.
    National Center for Earthquake Engineering Research, Buffalo, NY.; National Science Foundation, Washington, DC., June 29, 1990, 80 p.
    Keywords: Earthquake resistant structures; Adaptive control; Structural vibration; Earthquake resistance; Control equipment; Seismic waves; Mathematical models; Earth movements; Dynamic response; Earthquake engineering; Active control; Vibration damping; Displacement; Acceleration (Physics); Bearings; Dynamic structural analysis

  • Yang, J. N.; Li, Z.
    Instantaneous Optimal Control with Acceleration and Velocity Feedback.
    National Center for Earthquake Engineering Research, Buffalo, NY.; National Science Foundation, Washington, DC., June 29, 1990, 56 p.
    Keywords: Numerical analysis; Seismic waves; Feedback control; Earth movements; Displacement; Mathematical models; Vibration damping; Stochastic processes; Earthquake resistant structures; Structural vibration; Active control; Acceleration (Physics); Floors; Control equipment; Earthquake resistance; Dynamic response; Earthquake engineering; Velocity measurement; Dynamic structural analysis