西南石油大学学报(自然科学版) ›› 1991, Vol. 13 ›› Issue (3): 74-81.DOI: 10.3863/j.issn.1000-2634.1991.03.011

• 石油机械工程 • Previous Articles     Next Articles

USING MODIFIED NEVILLE EXTRAPOLATION TO INCREASE STRESS ACCURACY OF FINITE ELEMENT METHOD FOR DYNAMIC RESPONSE

Zhang Ru-qing1 Dong Shi-er 2
  

  1. 1.Chongqing University 2.Dept,ofMechanical Engineering
  • Received:1990-05-09 Revised:1900-01-01 Online:1991-08-20 Published:1991-08-20
  • Contact: Zhang Ru-qing

Abstract: For dynamic response, especially when frequence is high, the stress ae-
curacy obtained by the finite element method is very low. This question hasn' t been solved theoretically, To solve it, this paper extends Neville extrapolation from one-dimension to multi-dimension, Accordind to numerical characteristics of dynamic response, "outside approach" and "inside approach" are put for-ward, and Neville extrapolation can be used in the finite element method to increase the dynamic stress accuracy.

Key words: Dynamic response Outside approach Inside appro

CLC Number: