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Solving Finite Element Structural Dynamic Problems on Small Computers Using Semi-Explicit Methods
Numerical techniques based on the partial decomposition of a coefficient matrix, are developed for structural dynamic problems. Improved iterative techniques are discussed which could...

The Lanczos Method in Structural Dynamics
The solution of the equations of motion often results in the solution of an eigenvalue problem in which the system matrices are large. Traditionally, the solution of this problem has employed...

Finite Element Discretization for Mixed-Mode Fracture Problems
The finite element discretization of mixed-mode problems in fracture mechanics is investigated. The characteristics of the mesh near the crack affect the accuracy of the finite element...

Response of Eccentrically Braced Tall Buildings
The inelastic dynamic response aspects of tall steel buildings with eccentric K-bracing and eccentric X-bracing systems are examined, when subjected to factored El-Centro and computer...

Predictions of Thermally Induced Stresses in Thin Walled Grain Storage Bins Under Declining Ambient Temperatures
A generalized constitutive equation for cohesionless sands based on elasto-plastic theories is applied to a grain bin system. The validity of the theory is established through the finite...

Tunnel Closure Prediction by Finite Element Method
Discussed is the tunnel closure prediction of a drainage tunnel using finite element methods. Separately, three finite element programs were used to predict the closure. The results of...

Analysis of R/C Slab Under Turbine Missile Impact
Turbine missile impact on reinforced concrete barrier in nuclear reactor power plants is simulated using the finite element method. One of four full scale turbine missile impact tests...

Improved Method for the Dynamic Response of Bilinear Systems
A procedure is presented to eliminate the error introduced in the step-by-step numerical integration of the equations of motion of hysteretic bilinear systems subjected to earthquake excitations...

Symbols for Controlling CAD Software
The use of graphic symbols for controlling complex CAD software is discussed. Emphasis is put on the advantages of icons over text. Guidelines for developing and adapting graphic symbols...

Conversion of WECAN to a Minicomputer Environment
The increasing use of Virtual Memory Systems (VMS) and their incorporation in a range of computers from large mainframe to micros indicates the desirability of converting WECAN to run...

Interactive Design of Reinforced Concrete Foundations
A new, highly graphical foundation design program, FOUNDATION-3D, provides the designer with a variety of easy to use foundation design tools in a flexible interactive environment. It...

The Electric Power Research Institute's TLWorkstation?
The initial version of the Electric Power Research Institute's TLworkstation software system is described. The factors influencing the software design and the programming...

Nonlinear Structural Analysis on an Engineering Workstation
The objective of this paper is to demonstrate the feasibility of solving nonlinear structural analysis problems on a desktop engineering workstation. The paper summarizes the main features...

Self-Adapting CAD Software
An approach for enhancing CAD and other interactive software is described. The goals of the approach are bifold, to customize complex programs which employ computer graphics, and to improve...

An Interactive Shell for Batch Processors
Many programs have been and are currently being developed in which the input data files or associated databases must be developed independently of the main program. This paper describes...

Interactive Computer Graphic Seismic Design of Frames
An interactive computer graphics approach for earthquake resistant design of two and three-dimensional steel frames is presented. Analysis and design are possible from code-related equivalent...

Structural and Architectural Maintenance Management by Micro-computer
When a new Senior Vice-President for University College, the nonmedical portion of the University of Alabama at Birmingham, was appointed in 1984, one of the problems encountered by the...

Structural Design Optimization of Nonlinear Response With Adina
Procedures for sensitivity analysis and optimization of nonlinear structural systems with the computer program ADINA are described. Formulation of the structural optimization problem and...

Design Improvements Using Finite Elements and Optimizing with Approximate Functions
A design optimization module has been added to the finite element program ANSYS, designed to aid the engineer in reaching an improved or optimum design. The numerical technique employed...

Incorporating Uncertainty in a Dynamic Structural Analysis
A methodology has been developed and exercised for taking into account parametric uncertainties in a structural dynamics analysis and providing an approximation of the probability of response....

 

 

 

 

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