Quadratic solid‒shell elements for nonlinear structural analysis and sheet metal forming simulation
TypeArticles dans des revues avec comité de lecture
In this paper, two quadratic solid‒shell (SHB) elements are proposed for the three-dimensional modeling of thin structures. These consist of a twenty-node hexahedral solid‒shell element, denoted SHB20, and its fifteen-node prismatic counterpart, denoted SHB15. The formulation of these elements is extended in this work to include geometric and material nonlinearities, for application to problems involving large displacements and rotations as well as plasticity. For this purpose, the SHB elements are coupled with large-strain anisotropic elasto-plastic constitutive equations for metallic materials. Although based on a purely three-dimensional approach, several modifications are introduced in the formulation of these elements to provide them with interesting shell features. In particular, a special direction is chosen to represent the thickness, along which a user-defined number of integration points are located. Furthermore, for efficiency requirements and for alleviating locking phenomena, an in-plane reduced-integration scheme is adopted. The resulting formulations are implemented into the finite element software ABAQUS/Standard and, to assess their performance, a variety of nonlinear benchmark problems are investigated. Attention is then focused on the simulation of various complex sheet metal forming processes, involving large strain, anisotropic plasticity, and double-sided contact. From all simulation results, it appears that the SHB elements represent an interesting alternative to traditional shell and solid elements, due to their versatility and capability of accurately modeling selective nonlinear benchmark problems as well as complex sheet metal forming processes.
Files in this item
Showing items related by title, author, creator and subject.
Efficient solid–shell finite elements for quasi-static and dynamic analyses and their application to sheet metal forming simulation WANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (Trans Tech Publications, 2015)Thin structures are commonly designed and employedin engineering industries to save material, reduce weight and improve the overall performance of products. The finite element (FE) simulation of such thin structural ...
Explicit dynamic analysis of sheet metal forming processes using linear prismatic and hexahedral solid‒shell elements WANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (EMERALD INSIGHT, 2017)This paper proposes two linear solid‒shell finite elements for the three-dimensional modeling of thin structures in the context of explicit dynamic analysis. These solid‒shell formulations, which are extensions of their ...
Quadratic prismatic and hexahedral solid‒shell elements for geometric nonlinear analysis of laminated composite structures WANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (Elsevier, 2017)The current contribution proposes two quadratic, prismatic and hexahedral, solid–shell elements for the geometric nonlinear analysis of laminated composite structures. The formulation of the proposed solid–shell elements ...
Linear and Quadratic Solid-Shell Elements for Quasi-Static and Dynamic Simulations of Thin 3D Structures: Application to a Deep Drawing Process WANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (University of Ljubljana, 2017)A family of prismatic and hexahedral solid–shell (SHB) elements, with their linear and quadratic versions, is proposed in this work to model thin structures. The formulation of these SHB elements is extended to explicit ...
RACZ, Sever-Gabriel; KHAN, Salim; CHALAL, Hocine; ABED-MERAIM, Farid; BALAN, Tudor (Francisco Chinesta , Yvan Chastel and Mohamed El Mansori, 2011)Within the framework of sheet metal forming, the importance of hardening models for springback predictions has been often emphasized. While some specific applications require very accurate models, in many common situations ...