On a least‐squares formulation for hyperelastic, transversely isotropic problems
On a least‐squares formulation for hyperelastic, transversely isotropic problems
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关于超弹性横观各向同性问题的最小二乘公式
DOI:
10.1002/pamm.201410111
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
und B. Müller
中科院分区:
文献类型:
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作者:
K. Steeger;A. Schwarz;J. Schröder;G. Starke;und B. Müller
In the present work a mixed finite element based on a least‐squares formulation is proposed. In detail, the provided constitutive relation is based on a hyperelastic free energy including terms describing a transversely isotropic material behavior. Basis for the element formulation is a weak form resulting from a least‐squares method, see e.g. [1]. TheL2‐norm minimization of the residuals of the given first‐order system of differential equations leads to a functional depending on displacements and stresses. The interpolation of the unknowns is executed using different approximation spaces for the stresses (Wq(div, Ω)) and the displacements (W1,p(Ω)), under consideration of suitablepandq. For the approximation of the stresses vector‐valued shape functions of Raviart‐Thomas type, related to the edges of the respective triangular element, are applied. Standard interpolation polynomials are used for the continuous approximation of the displacements. The performance of the proposed formulation will be investigated considering a numerical example. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
DOI:
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发表时间:
2013
期刊:
影响因子:
--
作者:
K. Steeger;A. Schwarz;J. Schröder;G. Starke;B. Müller
通讯作者:
B. Müller
DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
K. Steeger;A. Schwarz;J. Schröder;G. Starke;B. Müller
通讯作者:
B. Müller