Calculated and Observed Vibration Amplitudes
Comparisons between the observed and calculated (Sung solution) maximum displacement amplitudes suggest that for sandy and silty soils the stress distribution beneath the footing changes...

Torsional Vibrations of Circular Foundations
Vibrations of circular foundation about their axis of symmetry are investigated. The analytical solutions of forced torsional oscillations on an elastic homogeneous isotropic half space...

Two Innovations for Improving Harbor Resonators
The results of an experimental study on two aspects of resonator behavior for harbor entrances are presented. The first aspect involves a battery of three resonators tuned to cover a wide...

Design of Offshore Structures Against Resonant Response

Resonance in Pressurized Piping Systems
A new approach, based on the transfer matrix method used in the theory of vibrations, is presented to study the steady-oscillatory flows, and to determine the resonating characteristics...

Prediction of Footing Vibrations
The vibrations of massive footings on soil are investigated. The experiments with bodies having variable mass and foundation base size are compared with the half-space theory. The amplitudes...

Modal Interference in Vibration Tests
The paper is devoted to the dynamics of building structures excited by-sinusoidal excitation. The analysis indicates that the complicated response curves found for higher modes of some...

Abnormality Detection on Simulated Arterial Systems
As the need exists for improvement of current techniques for detecting and evaluating disorders of the arterial system, a feasibility study was made to investigate the use of changes in...

Steady Free Surface Flow Over Wavy Bed
By studying the nonlinear problem to higher order, the steady free surface flow past a wavy bed is analyzed near the resonance speed. It is shown that the free surface amplitude always...

Runway Roughness Effects on New Aircraft Types
The effects of runway roughness on control and vertical acceleration during the takeoff operation are discussed. In particular, published NASA data have been researched and extended to...

A Synthesis on Wave Run-Up
A critical survey of existing theories and experiments on wave run-up is carried out. The theories of run-up of nonbreaking waves are analyzed first. Breaking criteria and the main theories...

Equivalent Viscous Damping for Yielding Structures
The paper treats the application of the concept of equivalent viscous damping to the steady-state response of simple yielding structures subjected to sinusoidal excitation. Using the elasto-plastic...

Response of Multi-Degree-of-Freedom Yielding Systems
The steady-state frequency response equations for a class of multi-degree-of-freedom yielding structures are determined using approximate analytic techniques. The yield model used is a...

Steady State Vibration of Damped Timoshenko Beams
A method for the analysis of the steady state vibration of damped Timoshenko beams is presented. The usual four differential equations of the Timoshenko Theory are increased to eight differential...

Force-Deflection Relations From Dynamic Tests
A method is developed for determining the dynamic force-deflection relation of a one-degree of freedom hysteretic structure from the steady-state response to sinusoidal excitation. The...

Vibration Tests of a Nine-Story Steel Frame Building
A nine-story steel frame building has been subjected to an extensive ser of forced resonance tests. Seven translational and three torsional modes were investigated in detail. A mode in...

Analysis of Four-legged Tower for Dynamic Loads
An analysis, applicable to wind-loaded tower structures and wave-loaded off-shore platforms, is presented. First a mathematical analysis, which considers time dependent loadings, a large...

Resonance of Beams Due to Cyclic Moving Loads
An analysis is presented for determining the conditions of resonance and the dynamic response of a simply supported beam subjected to a moving point load of variable magnitude P...

Synthesis of A Space Truss Based on Dynamic Criteria
The development of a computer program for the automated design of hyperstatic truss structures subject to alternative resonant frequency requirements is described. The program is based...

Wave-Induced Oscillations in Harbors
The problem of wave induced oscillations of a small rectangular harbor that is connected to a larger rectangular wave basin is treated. This model system, without artificial energy dissipators,...

 

 

 

 

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