On the influence of far-field model reduction techniques using a coupled FEM-SBFEM approach in time domain

Marco SCHAUER

doi:https://doi.org/10.33187/jmsm.435146

Makale detayları

On the influence of far-field model reduction techniques using a coupled FEM-SBFEM approach in time domain

Yazarlar:

Marco SCHAUER

Yayıncı:

Mahmut AKYİĞİT

Ana Başlıklar:

Matematik

Dergi:

Journal of Mathematical Sciences and Modelling 2018 Vol.1 Issue 2, pp.93-104

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000486722

Sıklık:

Aylık

pISSN:

2636-8692

DOI:

https://doi.org/10.33187/jmsm.435146

Özet:

 


To analyse soil-structure-interaction problems, often unbounded domain has to be taken into account. Since the finite element method (FEM) does not provide open boundary itself the scaled boundary finite element method (SBFEM) which fulfils the radiation condition for wave propagation to infinity is used. The coupling of FEM and SBFEM in time domain is very time and memory consuming, due to the almost fully populated acceleration unit-impulse matrices and the convolution integral, which has to be solved at every time step. This paper studies ways to overcome this drawback and describes the influence of different model reduction techniques: like extrapolated acceleration unit-impulse response matrices, geometric far-field decoupling and sub-structured far-fields which can be applied to the far-field and also their combination. The different techniques for a FEM-SBFEM coupling in time domain are evaluated in terms of accuracy and computational effort.

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Makale detayları

On the influence of far-field model reduction techniques using a coupled FEM-SBFEM approach in time domain

Yazarlar: Marco SCHAUER

Yayıncı: Mahmut AKYİĞİT

Ana Başlıklar: Matematik

Dergi: Journal of Mathematical Sciences and Modelling 2018 Vol.1 Issue 2, pp.93-104

Belge Tipi: Makale

Yayın Tarihi: 9/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000486722

Sıklık: Aylık

pISSN: 2636-8692

DOI: https://doi.org/10.33187/jmsm.435146

Sayı

Yazarlar:

Marco SCHAUER

Yayıncı:

Mahmut AKYİĞİT

Ana Başlıklar:

Matematik

Dergi:

Journal of Mathematical Sciences and Modelling 2018 Vol.1 Issue 2, pp.93-104

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000486722

Sıklık:

Aylık

pISSN:

2636-8692

DOI:

https://doi.org/10.33187/jmsm.435146