# Multiple Modes of Steady-State Slide-Rock Response

*The dynamic response of free standing rigid bodies to base excitation can be quite complex, as evidenced by the five motions or modes to be considered in a two-dimensional analysis: rest,...*

Screen Breakwaters

*The diffraction of water waves by an offshore breakwater consisting of an infinite row of equally-spaced vertical screens is investigated theoretically. The reflected and transmitted wave...*

Computation of Wind Pressures on L-Shaped Buildings

*The paper refers to the numerical simulation of turbulent wind conditions around an arbitrarily-shaped building composed of two rectangular blocks. The time-averaged Navier-Stokes equations...*

Computation of Flow in Ice-Covered Dune-Bed Channels

*A numerical method for solution of the Reynolds-averaged Navier-Stokes equations is developed to study the flow over sand dunes in two-dimensional channels. The method is applied to calculate...*

Improved Time-History Analysis for Structural Dynamics Calculations

*Methods are developed to reduce the computational effort in time-history analysis of nonlinear structures. The methods permit use of much larger time intervals than are possible in conventional...*

Modal Coupling Effect of Non-Classically Damping

*The equations of motion of a structure in undamped modal coordinates may have non-zero off-diagonal terms in the damping matrix. Although these terms are commonly neglected, studies have...*

Free Vibration Analysis of Asymmetric Buildings

*A simple procedure for free vibration analysis of asymmetric buildings is presented. This method assumes that each floor is a rigid diaphragm with three degrees of freedom (two lateral...*

Wave Propagation in a Nonlocal Strain-Softening Continuum

*The problem of wave propagation in a nonlocal strain softening solid is first discussed analytically. It is demonstrated that 'loading' waves can still propagate in the strain softening...*

Routes to Chaos of a Vertically Rotating Pendulum

*Each blade of a mechanical shredder may be modeled by a pendulum whose pivot rotates in a vertical circle. The transition to chaos of small periodic motion about radial lines us the driving...*

Roll-Waves on a Non-Newtonian Mud Layer

*This article extends the theory of roll-waves due to Dressler (1949) to a thin layer of mud modeled as a power law fluid. Roll-waves are periodic bores moving at a constant velocity down...*

Inflation Instability of Cylindrical Membranes

*A new procedure which investigates inflation instability of cylindrical nonlinear membranes is developed. The general characteristics of inflation instability are described. An efficient...*

Stochastic Finite and Boundary Elements

*The random coefficients in partial differential equations, which govern the responses of stochastic thermo-mechanical systems, (Dasgupta, 1991), pose a computational challenge. The large...*

Investigation of Parametrically-Induced Excitation in Concrete Columns

*A mathematical model is developed which accounts for the non-linear material characteristic of concrete members. The axial and transverse motions of concrete columns, are found to be second-order...*

Tripod Crane Concept for Lunar Surface Construction

*A construction scheme using three integrated cranes is proposed. Mikulas proposed a lunar crane concept which introduces a set of three cables in order to stabilize the payload. This paper...*

Tide and Hurricane Storm Surge Computations for the Western North Atlantic and Gulf of Mexico

*The development of a finite element (FE) model to study tides and hurricane storm surge in the Western North Atlantic and Gulf of Mexico is discussed. Issues that are emphasized include...*

A Finite Element Model for Three-Dimensional Flows Along the West Coast of Vancouver Island

*Extensive salinity and temperature measurements taken during June 1984 are used to calculate a three-dimensional density field for the west coast of Vancouver Island. Combining this field...*

Approximation of Convective Processes by Cyclic AOI Methods

*Convective or advective processes play a role in many models for civil engineering applications. For example in transport equations, in hydrodynamic equations or wave energy equations....*

Linearisation and Offshore Fatigue Reliability

*In determining the force effects due to wave action on offshore structures it is conventional to use an equivalent linearisation to convert wave velocities to forces via Morison's equation....*

Asymptotic Importance Sampling

*One of the main issues in reliability analysis is the accurate and efficient calculation of the multivariate reliability integral. The Asymptotic Importance Sampling Technique (AIS) selects...*

Responses of Nonlinear Oscillators Excited by Non-Gaussian Pulse Processes

*The estimation of the response statistics of nonlinear systems subjected to Poisson-distributed pulse processes is addressed. The procedure to be followed is based on an extension of the...*

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