Reduced relative entropy techniques for a priori analysis of multiphase problems in elastodynamics
Reduced relative entropy techniques for a priori analysis of multiphase problems in elastodynamics
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DOI:
10.1007/s10543-015-0560-2
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发表时间:
2014-05
影响因子:
1.5
通讯作者:
J. Giesselmann;T. Pryer
中科院分区:
文献类型:
--
作者:
J. Giesselmann;T. Pryer
We give an a priori analysis of a semi-discrete discontinuous Galerkin scheme approximating solutions to a model of multiphase elastodynamics which involves an energy density depending not only on the strain but also the strain gradient. A key component in the analysis is thereduced relative entropystability framework developed in Giesselmann (SIAM J Math Anal 46(5):3518–3539, 2014). The estimate we derive is optimal in thenorm for the strain and thenorm for the velocity, wheredGis an appropriate mesh dependent-like space.