Showing papers in "Advances in Engineering Software in 1985"

TL;DR: The Program SAFE (Structural Analysis by Finite Elements) as mentioned in this paper is an advanced industrial version of a former academic prototype (ELFIN) which includes nearly 20 families of elements, automatic mesh and data generators, free format input with simple command language and extensive graphical pre-and post processing.

TL;DR: In this article, the authors deal further with the calculation of the stress intensity factors in two-dimensional crack problems by the sub-region mixed finite element method on the basis of earlier work.

TL;DR: In this paper, a method to compute the cross bispectrum and the associated variance of several time series is presented, together with its implementation on an array processor, and benchmark comparisons between several computers and the array processor are discussed.

TL;DR: The paper contains a survey of literature on database management for engineering applications, broadly classified into database management concepts and systems.

TL;DR: This note describes an improved version of the Nordbeck and Rystedt algorithm for determining whether a point is inside a polygon of arbitrary shape that is compatible with FORTRAN 77.

TL;DR: The BAKWATR as mentioned in this paper computer program computes profiles of gradually varied flow in open channels of irregular shape using a microcomputer, which can be used to compute the steady flow depth through rectangular weirs and submerged or unsubmerged circular culverts, or the user may input a known depth at the control section for the given flow rate.

TL;DR: In this article, a model for the dynamics and control of the flexible pinhole/occulter facility is developed and discussed, and a controller is designed that actively adds damping to the flexible modes.

TL;DR: This paper describes a complete three-dimensional finite element package suitable for the design and analysis of membrane and pneumatic structures that utilises both the linear two-node element as well as the three-node triangular flat membrane element formulated using the natural mode technique.

TL;DR: In this paper, a FORTRAN program based on the coupled algorithms of the Galerkin finite element method and the Newton-Raphson iterative technique for simultaneous solutions of two one-dimensional, non-linear, hyperbolic, partial differential equations for streamflow system is described.

TL;DR: Different ways of handling large matrices, which may arise in dynamics or other applications, are discussed and some techniques such as the use of ‘ram buffers’ in conjunction with hard disk or theUse of unidimensional arrays with pointers and modular programming, are presented as an effective alternative to cope with memory limitations.

TL;DR: A generalised continuous parabolic interpolation algorithm which produces a smooth composite parabolic curve through the data points is presented which is computationally more efficient than its original version and requires less data points to model a design chart.

TL;DR: A general workstation manager program is reviewed that provides a support layer between the user and the operating system, organizes software and data files, and facilitates on-line documentation and demonstrations.

TL;DR: A simple procedure for analysis of torsion of orthotropic bars is presented that considers an equivalent isotropic region for which the warping function satisfies Laplace's equation.

TL;DR: In this paper, a six-channel magnetotelluric (MT) method is used to determine the distribution of the Earth's electrical conductivity structure from measurements of the naturally occurring time changes in the electric and magnetic fields on the ground surface.

TL;DR: A Fortran preprocessor is described which maps VAX Fortran into standard Fortran 77, and Supported extensions include long variable names, DO WHILE loops, ENDDO loop terminations, Vax Fortran tab convention, and a MODULE facility to limit the access of external programs to subprogram and common block names.

TL;DR: A microcomputer program is presented for determining the lowest eigenfrequencies of large structural systems by using the finite element method and very accurate results can be obtained, although the computer system used sets a few constraints which often imply very long computing times.

TL;DR: The total weight resulting from the individual weight sum of structural elements or parts is assumed as a cost function, enabling an iterative process to be performed aimed at the achievement of a designed structure which is lighter and in accordance with the technological constraints and the limitations envisaged by code requirements.

TL;DR: Bi-dimensional and quasi-three-dimensional FE networks for geological applications are generated starting from digitalised network generation maps that comprises both grid density and selected geological contours that must be matched by sequences of generated network element sides.

TL;DR: In this paper, the authors analyzed the influence of ESS predictor variables on overall satisfaction as determined by multiple regression and confirmed the theories that suggest that ease of operation, computer reliability and technical support are the major determinants of overal computer user satisfaction.

TL;DR: A method to perform computer aided analysis and design of thermodynamic cycles for steam power plants and an optimisation program that performs a search for the best cycle, according to the criteria selected by the user, are described.

TL;DR: In this paper, an iterative procedure for the design of frames in the elastic range is given, where the total weight resulting from the individual weight sum of structural elements or parts is assumed as a cost function.

TL;DR: A package of routines written in PASCAL language is presented, in order to simplify the input process to any application program.

TL;DR: In this paper, the authors extend previous work on product B-spline integration to give quadrature rules which involve function evaluations at the spline knots, i.e. Lobatto-type formulae.

TL;DR: The advanced concepts embodied in the SALT (Systems Analyses Language Translator) systems code are discussed, which include general system theory, preprocessing, precompilation of models, multi-dimensioned equation solving, optimization, dynamic systems and language translation.

TL;DR: A procedure that links output from a discretised mesh to the input needed by a column profile solver is described, takes arbitrarily ordered mesh output and prepares it for the highly structured input of the solver.

TL;DR: The features of an interactive computer aided package for bevel and worm gears and the method of coding standard design data and charts into computer software is outlined.

TL;DR: In this article, a program has been developed which aids the designer in this task and all of the fairly simple but very time-consuming calculations involved are done rapidly by the machine, while leaving complete control with the designer.