Artigo Revisado por pares

A new approach to reduce membrane and transverse shear locking for one-point quadrature shell elements: linear formulation

2005; Wiley; Volume: 66; Issue: 2 Linguagem: Inglês

10.1002/nme.1548

ISSN

1097-0207

Autores

Rui P.R. Cardoso, Jeong Whan Yoon, Robertt Valente,

Tópico(s)

Dynamics and Control of Mechanical Systems

Resumo

International Journal for Numerical Methods in EngineeringVolume 66, Issue 2 p. 214-249 Research Article A new approach to reduce membrane and transverse shear locking for one-point quadrature shell elements: linear formulation Rui P. R. Cardoso, Corresponding Author Rui P. R. Cardoso [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, PortugalDepartment of Mechanical Engineering, University of Aveiro, Campus Univ. Santiago, 3810-193 Aveiro, PortugalSearch for more papers by this authorJeong Whan Yoon, Jeong Whan Yoon [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal Alloy Technology and Material Research Division, Alcoa Technical Center, 100 Technical Dr., PA 15069-0001, U.S.A.Search for more papers by this authorRobertt A. Fontes Valente, Robertt A. Fontes Valente [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, PortugalSearch for more papers by this author Rui P. R. Cardoso, Corresponding Author Rui P. R. Cardoso [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, PortugalDepartment of Mechanical Engineering, University of Aveiro, Campus Univ. Santiago, 3810-193 Aveiro, PortugalSearch for more papers by this authorJeong Whan Yoon, Jeong Whan Yoon [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal Alloy Technology and Material Research Division, Alcoa Technical Center, 100 Technical Dr., PA 15069-0001, U.S.A.Search for more papers by this authorRobertt A. Fontes Valente, Robertt A. Fontes Valente [email protected] Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, PortugalSearch for more papers by this author First published: 14 November 2005 https://doi.org/10.1002/nme.1548Citations: 39AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract In the last decade, one-point quadrature shell elements attracted many academic and industrial researchers because of their computational performance, especially if applied for explicit finite element simulations. Nowadays, one-point quadrature finite element technology is not only applied for explicit codes, but also for implicit finite element simulations, essentially because of their efficiency in speed and memory usage as well as accuracy. In this work, one-point quadrature shell elements are combined with the enhanced assumed strain (EAS) method to develop a finite element formulation for shell analysis that is, simultaneously, computationally efficient and more accurate. The EAS method is formulated to alleviate locking pathologies existing in the stabilization matrices of one-point quadrature shell elements. An enhanced membrane field is first constructed based on the quadrilateral area coordinate method, to improve element's accuracy under in-plane loads. The finite element matrices were projected following the work of Wilson et al. (Numerical and Computer Methods in Structural Mechanics, Fenven ST et al. (eds). Academic Press: New York, 1973; 43–57) for the incompatible modes approach, but the present implementation led to more accurate results for distorted meshes because of the area coordinate method for quadrilateral interpolation. The EAS method is also used to include two more displacement vectors in the subspace basis of the mixed interpolation of tensorial components (MITC) formulation, thus increasing the dimension of the null space for the transverse shear strains. These two enhancing vectors are shown to be fundamental for the Morley skew plate example in particular, and in improving the element's transverse shear locking behaviour in general. Copyright © 2005 John Wiley & Sons, Ltd. REFERENCES 1 Belytschko T, Tsay CS. A stabilization procedure for the quadrilateral plate element with one-point quadrature. International Journal for Numerical Methods in Engineering 1983; 19: 405. 2 Belytschko T, Lin JI, Tsay CS. Explicit algorithms for the nonlinear dynamics of shells. 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