4-node EAS-ANS strain element in 6—field nonlinear theory of shells
Abstract
We propose a 4-node C° shell element with the drilling degree of freedom, appropriate for shell structures undergoing large displacements and rotations. The element is developed within the 6-field theory of irregular shell structures. To avoid the well-known locking phenomena, the proposed element combines two techniques: the Assumed Natural Strain (ANS) for shear locking and the Enhanced Assumed Strain (EAS) for membrane locking. The performance of the element is evaluated on three classical benchmark problems.
Fields of Study & Subjects
Advanced Numerical Methods in Computational Mathematics
Composite Structure Analysis and Optimization
Structural Analysis and Optimization
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 451–456
- Publication date
- 4 February 2026
- Language
- EN
- Document type
- Book chapter