Now showing items 1-10 of 26
Digital Simulation of Seismic Ground Motion
The method of spectral representation for uni-variate, one-dimensional, stationary stochastic processes and multi-dimensional, uni-variate (as well as multi-dimensional, multi-variate) homogeneous stochastic fields has ...
Horizontal Impedances for Radially Inhomogeneous Viscoelastic Soil Layers
A study of the dynamic impedances of horizontally excited, radially inhomogeneous, infinite viscoelastic soil layers with a circular hole, and of piles embedded in a medium represented by such layers is made considering ...
Report on the Whittier-Narrows, California, Earthquake of October 1,1987
An abbreviated report of the findings of a post-earthquake reconnaissance team from the National Center for Earthquake Engineering Research. Surveys structural behavior and policy issues.
Seismic Probabilistic Risk Assessment and Seismic Margins Studies for Nuclear Power Plants
This report presents a review of the seismic probabilistic risk assessment and seismic margin studies for nuclear power plants in the United States. The techniques employed in these studies are briefly described. A few ...
Symbolic Manipulation Program (SMP) -Algebraic Codes for Two and Three Dimensional Finite Element Formulations
A computer algebra package entitled the Symbolic Manipulation Program (SMP) has been briefly reviewed. Its capabilities of handling the Finite Element Method (FEM) and Matrix Structure Analysis (MSA) are studied. The ...
Vertical and Torsional Impedances for Radially Inhomogeneous Viscoelastic Soil Layers
A study of the dynamic impedances of thin, infinite viscoelastic soil layers with a circular hole is made considering a continuous, ramp-like variation for the shear modulus of the material. Both vertically and torsionally ...
Frequency Response of Secondary Systems Under Seismic Excitation
The main objective of this report is to investigate how the component-mode procedure can be utilized to full advantage by including the smallest number of normal modes of the primary system in the analysis while still ...
First-Year Program in Research, Education and Technology Transfer
The goal of the National Center for Earthquake Engineering Research (NCEER) is to coordinate a team effort in the study of earthquake engineering which will substantially enhance the state-of-the-art. Current activities ...
A Nonstationary Solution in Random Vibration Theory
An approximate Markov process for a function of the system response of a class of lightly damped, nonlinear random vibration problems is derived using the method of stochastic averaging. The solution of the associated ...
Experimental Evaluation of Instantaneous Optimal Algorithms for Structural Control
In a continuing effort to determine the feasibility of applying optimal control to building structures, a comprehensive experimental study was carried out using a standardized structural model under base excitation supplied ...