Preliminary mesh checking for structural analysis

ABSTRACT

The purpose of this work is to provide tools for checking the nodes and elements of a Finite Element Model for Structural Analysis. All the checks related to single elements (warping and stretch factor, interior angles) can be performed on the whole model with APL scalar functions (without any loop). Operations that involve comparison between elements (such as checking for coincident nodes and coincident elements) require a non-trivial approach. A simple algorithm for recursive space-splitting is described, along with performance considerations for large models. Graphic output obtained using the Graphics Support Library of RTPC and an interface to Interleaf Workstation Publishing System are also provided.

INDEX TERMS

Primary Classification:
  J. Computer Applications
  J.2 PHYSICAL SCIENCES AND ENGINEERING
      Subjects: Engineering

Additional Classification:
  D. Software
  D.3 PROGRAMMING LANGUAGES
      D.3.2 Language Classifications

          Nouns: APL

  G. Mathematics of Computing
  G.1 NUMERICAL ANALYSIS
      G.1.8 Partial Differential Equations
          Subjects: Finite element methods

  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.6 Methodology and Techniques
          Subjects: Interaction techniques

General Terms:
Algorithms, Design, Languages, Performance