Abstract
The proposed work extends the well-known assumed stress elements to the framework of hyperelasticity. In order to obtain the constitutive relationship, a nonlinear set of equations is solved implicitly on element level. A numerical verification, where two assumed stress elements are compared to classical enhanced assumed strain elements, depicts the reliability and efficiency of the proposed concept. This work is closely related to the publication of Viebahn et al. (2019)
The financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) is gratefully acknowledged - 255432295.
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Viebahn, N., Schröder, J., Wriggers, P. (2020). A Concept for the Extension of the Assumed Stress Finite Element Method to Hyperelasticity. In: Schröder, J., de Mattos Pimenta, P. (eds) Novel Finite Element Technologies for Solids and Structures. CISM International Centre for Mechanical Sciences, vol 597. Springer, Cham. https://doi.org/10.1007/978-3-030-33520-5_4
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