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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...

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...

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...

Managing Software for More Efficient Design
Efficient design of structural members with microcomputers requires a large variety of analysis, design, and check programs. The management of these programs can best be accomplished with...

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...

Experience With Workstation-Based Design of Steel Structures
An example is presented of an interactive graphical structural analysis and design system suitable for individual-user workstations. The experience of a corporate engineering services...

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...

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...

Integrated Design of Concrete Flat Plate Structures
An integrated structural design and drafting system for concrete flat plate floor systems is described. This system provides at a single computer workstation the tools necessary to layout...

Seismic Structural Optimization and Computer Programs
A generic system has been developed for the geometric design of highway retaining walls. Merging the three-dimensional coordinate geometry capabilities of the roadway design system (RDS)...

How To Design Highway Retaining Walls?A Practical Application of CADD
The recent work developed at the University of Missouri-Rolla (UMR) including optimization algorithms and two computer programs, ODSEWS-2D-II and ODRESB-3D are discussed. Several numerical...

Engineering Optimization Via Genetic Algorithm
The application of a genetic algorithm (GA) to the optimal design of a ten member, plane truss is considered. Genetic algorithms are search procedures based upon the mechanics of natural...

Analysis and Optimum Design of Nondeterministic Structures under Random Loads
The importance of analyzing and designing structural systems by using a reliability-based approach is emphasized, including system safety requirements with regard to both serviceability...

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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