A general isogeometric finite element formulation for rotation‐free shells with in‐plane bending of embedded fibers
International Journal for Numerical Methods in Engineering, vol. 123, pp. 3115–3147
Abstract
Abstract This article presents a general, nonlinear isogeometric finite element formulation for rotation‐free shells with embedded fibers that captures anisotropy in stretching, shearing, twisting, and bending—both in‐plane and out‐of‐plane. These capabilities allow for the simulation of large sheets of heterogeneous and fibrous materials either with or without matrix, such as textiles, composites, and pantographic structures. The work is a computational extension of our earlier theoretical work that extends existing Kirchhoff‐Love shell theory to incorporate the in‐plane bending resistance of initially straight or curved fibers. The formulation requires only displacement degrees‐of‐freedom to capture all mentioned modes of deformation. To this end, isogeometric shape functions are used in order to satisfy the required ‐continuity for bending across element boundaries. The proposed formulation can admit a wide range of material models, such as surface hyperelasticity that does not require any explicit thickness integration. To deal with possible material instability due to fiber compression, a stabilization scheme is added. Several benchmark examples are used to demonstrate the robustness and accuracy of the proposed computational formulation.
Authors 3
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Thang X. Duong Aachen Aachen Institute for Advanced Study in Computational Engineering Science (AICES) Department of Continuum Mechanics
RWTH Aachen University · Aachen Institute for Advanced Study in Computational Engineering Science
Affiliation as printed
Aachen Institute for Advanced Study in Computational Engineering Science (AICES) RWTH Aachen University Aachen Germany
Department of Continuum Mechanics RWTH Aachen University Aachen Germany
Aachen Institute for Advanced Study in Computational Engineering Science (AICES), RWTH Aachen University, Aachen, Germany
Department of Continuum Mechanics, RWTH Aachen University, Aachen, Germany
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Affiliation as printed
Department of Continuum Mechanics RWTH Aachen University Aachen Germany
Department of Continuum Mechanics, RWTH Aachen University, Aachen, Germany
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Roger A. Sauer corresponding Aachen Aachen Institute for Advanced Study in Computational Engineering Science (AICES)
RWTH Aachen University · Aachen Institute for Advanced Study in Computational Engineering Science · Gdańsk University of Technology · Indian Institute of Technology Kanpur
Affiliation as printed
Aachen Institute for Advanced Study in Computational Engineering Science (AICES) RWTH Aachen University Aachen Germany
Department of Mechanical Engineering Indian Institute of Technology Kanpur Kanpur Uttar Pradesh India
Faculty of Civil and Environmental Engineering Gdańsk University of Technology Gdańsk Poland
Aachen Institute for Advanced Study in Computational Engineering Science (AICES), RWTH Aachen University, Aachen, Germany
Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India
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