On the mitigation of shear locking in laminated plates through p-version refinement. (December 2019)

• Record Type: Journal Article
• Authors: Li, G.; Carrera, E.
• Is Part Of: Computers & structures. Volume 225(2019)
• Publication Date: 2019-12
• Subjects: Shear locking -- Finite element -- Composite plate -- p-refinement -- Carrera Unified Formulation; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2019.106121
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: The effectiveness of p -version refinement in mitigating shear locking is assessed. A decomposition of strain energy is introduced and used to evaluate shear locking. Selective and reduced integration techniques on p -version elements are explored. The efficiency of p -refinement and Lagrangian elements with MITC are compared. Abstract: This article presents an evaluation of higher-order p -version plate elements in the mitigation of shear locking phenomenon in the analysis of multi-layered structures. Carrera Unified Formulation (CUF) is employed to construct the refined plate finite element models. The decomposition of strain energy components is introduced and used in the assessment of shear locking. The evolution of the displacement and stress solutions and the strain energy components with the increase of the polynomial degree of the p -version elements are reported. Reduced and selective integration techniques on p -version plate elements to alleviate locking are explored. Numerical results show that plain p -version plate elements with sufficient, higher-order shape functions are capable of mitigating shear locking effectively.