Matrix Eigenvalue Problem of Multiple-Shaker Testing
It is shown that the problem of dynamic testing using multiple shaker excitations can be represented by a matrix-eigenvalue formulation. A problem is formulated and an optimal solution...

Body Wave Excitations of Embedded Hemisphere
Solutions of three-dimensional vibrations of an embedded hemispherical foundation are presented for excitation by incident plane P, SV, and SH waves with arbitrary angles of incidence....

Movable-Bed Tidal Inlet Model
The effectiveness of movable-bed tidal inlet hydraulic models in predicting prototype behavior is evaluated by comparing the model predictions with the observations made in the prototype....

Control of Tall Building Under Earthquake Excitation
A method of analysis for tall buildings implemented by active control systems and excited by earthquake ground motions is proposed. The effectiveness of the active mass damper and the...

Application of Modulus Degradation Model of Clays
A degradation model is applied in conjunction with different soil models and stress-strain relations to site response analyses during earthquakes. To evaluate the effects of degradation,...

Long Wave Problems in Laboratory Models
For the design of harbors, offshore terminals, floating platforms, etc. it is of great importance that the long waves in nature are correctly represented in the physical model, because...

Prediction and Control of Pedestrian-Induced Vibration in Footbridges
Footbridges vibrate because the forces imparted by the user are applied with the frequency of the pace and movement, however small, is therefore a forced vibration. In instances where...

Wind-Induced Lock-In Excitation of Tall Structures
Circular and square tower models were tested in a boundary layer wind tunnel. At close to the critical reduced velocity and particularly at low values of structural damping, displacement...

Response of a Stochastic Linear System
A method is presented for determining the covariance function of response of a stochastic linear system in which coefficients and excitation are stochastic processes. Such a system is...

Stochastic Analysis of Elasto-Plastic Systems
A new approximate and simple technique is presented for predicting the response of elasto-plastic type yielding systems under stationary random excitation. The total response is spilt...

Dynamic Response of Elastic Cylinders in Fluid Layer
The dynamics of multiple cylindrical elastic beams in a horizontal fluid layer are examined. The hydrodynamic interaction forces on the cylinders, due to the base motion of the entire...

Midtown Manhattan Circulation and Surface Transit Study and Demonstration Project
Low cost capital improvement techniques can be used to improve the efficiency of surface transportation systems as demonstrated in New York City. A project was undertaken to improve air...

Hydroconsolidation Potential of Palouse Loess
Many loessial soils are susceptible to structural collapse due to inundation or a rise in ground-water levels near hydraulic structures. These soils are often classified as unstable without...

Wind Tunnel Design for Physical Modeling of Atmospheric Boundary Layer
Wind in the lower atmosphere has had direct adverse and beneficial impacts of the entirety of humanity throughout the ages. The evolution of wind tunnels for the physical modeling of natural...

Identification of Streamflow Stochastic Models
The identification of streamflow stochastic models is explored. The identification of the type of stochastic model is made, based on a conceptual physical representation of natural watershed....

Physical Modelling of Rotterdamse Waterweg Estuary
Hydraulic scale models are still the most powerful tools in studying estuarine problems (density flows and salinity intrusion). Weak points are, however, uncertainties in the scaling laws...

Heated Discharge in an Estuary: Case Study
Two physical model studies were conducted to evaluate the thermal patterns produced in the Hudson River by the condenser cooling water discharge from the Indian Point Nuclear Generating...

Random Response to Flow-Induced Forces
The response statistics of a linear structure subjected to excitation induced by a random flow with a non zero-mean velocity is examined. The technique of statistical linearization is...

Far Field Physical Models of Thermal Discharges

Design of Pump Intakes Through Physical Modeling

 

 

 

 

Return to search