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On mixed finite element formulations and stress recovery techniques

✍ Scribed by Alejandro Mota; John F. Abel

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
100 KB
Volume
47
Category
Article
ISSN
0029-5981

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✦ Synopsis

The relationship between a mixed ΓΏnite element formulation based on the Hu-Washizu (HW) functional and stress recovery techniques is elucidated. Although mixed formulations are primarily motivated by avoidance of locking phenomena in ΓΏnite element solutions, it is shown that a mixed formulation based on the HW functional, with displacements, stresses and strains as ΓΏelds, is so intimately related to stress recovery that the formulation itself can also be viewed as a stress recovery method.

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