# Parallel Preconditioned Conjugate Gradient Methods for Structural Analysis Problems with Multiple Loadings

*This paper describes the use of conjugate gradient method for finite element problems with multiple loading cases. Specifically, we introduce a modified conjugate gradient method for the...*

Low Stream Flow Frequency Analysis with Ordinary and Tobit Regression

*In order to estimate the low-flow quantiles at ungaged sites, it is necessary to estimate low-flow quantiles at gaged sites. Two linear regression methods, denoted NR and NE, are compared...*

A Prototype Distributed Processing System Water Control Data Processing at Tulsa District U.S. Army Corps of Engineers

*The Tulsa District, Corps of Engineers operates 50 multi-purpose reservoirs controlling runoff from all or parts of 7 states. These reservoirs are operated for flood control, water supply,...*

Creativity and Water Resources: Theory and Stimulation

*An attempt was made to assess the evolution of the water resources field. First, the most significant scientific advancements in the field since 2000 BC until early 1900 AD were listed...*

Methods for Designing Hydraulic Aquifer Remediation Techniques

*This paper reports on recent research to develop methods for accommodating uncertainty in designing hydraulic remediation systems for contaminated aquifers. The methods rely respectively...*

Improved Finite Element Modeling with Q-MESH and PARA

_{—}LIB Parallel Processing

*Distributed-memory multiprocessing, based on the Inmos transputer, provides orders-of-magnitude reductions in computing time at the lowest cost per MFLOPS. The PARA_LIB runtime library...*

Block-based Solvers for Engineering Applications

*This paper compares the performance of standard linear system solvers, LINPACK, widely used in engineering applications, and PARALIN (a block-based package for linear systems) on the Alliant...*

Stochastic Response Analysis of Nonlinear Plane Trusses with Spatial Variability

*This study considers responses of geometrically and materially nonlinear plane truss structures with spatially uncertain system parameters, subjected to random excitations. A stochastic...*

Explicit Integration Schemes in Structural Dynamics

*Based on the recursive explicit form of Newmark γ-β method developed by Zienkiewicz for displacements, similar recursive expressions for velocities and accelerations are developed. General...*

Nonlinearities and Imperfections in Creep Stability

*The effects of material and geometric nonlinearities and imperfections on the 'safe-load-limit' and the 'safe-service-period' of structures...*

Reliability of Beams on Uncertain Foundation

*A two phase approach is developed to evaluate the reliability of a finite linear elastic beam subject to a random point load on uncertain elastic foundation. In phase 1, an approximate...*

Wave Loading Linearization for Offshore Structures

*The linearization of Morison-type wave loading is to replace u|u| by cu, where u is a zero mean, stationary Gaussian random process and c is a constant. In the present study an optimal...*

A Contact Problem Modeling the Squeeze-Film Mode of Synovial Joint Lubrication

*A contact problem modeling synovial joint lubrication under squeeze-film conditions is studied. In this model, the thin synovial fluid layer is incompressible and linearly viscous, and...*

Engineering Applications of the Analysis of a Spherical Shell

*In a companion paper, a set of two integral equations have been established for a spherical shell under axisymmetric loads. This set of equations may be solved numerically by using Nystrom...*

Input-Output Discrete-Time Control of Structures

*This paper outlines an approach for active control of structures based on the identification of a linear difference equation to describe the control loop and the design of a discrete-time...*

Cumulants of the Nonlinear Combination of Independent Random Variables

*A random variable of interest is often the sum of linear or nonlinear combinations of many independent random variables. In calculating the statistics of this random sum, advantages of...*

Adequacy of Statistical Linearization for Nonlinear Degrading Structural Systems

*An investigation is carried out to examine the validity of current practice in using statistical linearization method for nonlinear degrading structures subject to random ground acceleration....*

Large Deflection of Simply Supported Inplane Loading Rectangular Plate Under Uniform Random Pressure

*The procedure for obtaining an approximate solution for the mean-square deflection as well as maximum mean-square stress of geometrically nonlinear rectangular plate with arbitary power...*

Buckling of Frames with Load-Dependent Supports

*The supports of frames may increase their rotational resistance as they are compressed. It is assumed here that this stiffening is a linear function of the load. Sway and nonsway buckling...*

Safe-Load-Limit of Plates in Cylindrical Bending

*The derivation of a closed-form expression for the viscoelastic critical load of long thin plates undergoing cylindrical bending and made of a linear time-dependent 'solid'-type...*

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