Implicit modelling and mesh refinement for complex structures
作者:
Ian C. Taig,
期刊:
International Journal for Numerical Methods in Engineering
(WILEY Available online 1986)
卷期:
Volume 22,
issue 1
页码: 17-38
ISSN:0029-5981
年代: 1986
DOI:10.1002/nme.1620220104
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractWhen analysing complex structures it is rarely feasible to represent explicitly all the structural features which may contribute significantly to local or global structural performance. This paper presents a variety of methods for representing features which are below the economic analysis scale. Two approaches are described—referred to as implicit stiffness calculation and implicit mesh refinement. The former is essentially approximate and uses relatively simple formulae and computations. The latter involves quite extensive subsidiary calculation, but can lead to numerically exact simulation of fine mesh behaviour in so far as it affects neighbouring structure. Stiffness equivalence principles are stated and a number of computation schemes are presented and illustrated with simple two‐dimensional examp
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