Multi‐level hp‐finite cell method for embedded interface problems with application in biomechanics
Multi‐level hp‐finite cell method for embedded interface problems with application in biomechanics
复制标题
嵌入式界面问题的多级 HP 有限元方法及其在生物力学中的应用
DOI:
10.1002/cnm.2951
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发表时间:
2018
影响因子:
2.1
通讯作者:
Martin
中科院分区:
文献类型:
--
作者:
Elhaddad;Mohamed;Zander;Kudela;László;Kollmannsberger;Stefan;Kirschke;Thomas;Martin
This work presents a numerical discretization technique for solving 3‐dimensional material interface problems involving complex geometry without conforming mesh generation. The finite cell method (FCM), which is a high‐order fictitious domain approach, is used for the numerical approximation of the solution without a boundary‐conforming mesh. Weak discontinuities at material interfaces are resolved by using separate FCM meshes for each material sub‐domain and weakly enforcing the interface conditions between the different meshes. Additionally, a recently developed hierarchicalhp‐refinement scheme is used to locally refine the FCM meshes to resolve singularities and local solution features at the interfaces. Thereby, higher convergence rates are achievable for nonsmooth problems. A series of numerical experiments with 2‐ and 3‐dimensional benchmark problems is presented, showing that the proposedhp‐refinement scheme in conjunction with the weak enforcement of the interface conditions leads to a significant improvement of the convergence rates, even in the presence of singularities. Finally, the proposed technique is applied to simulate a vertebra‐implant model. The application showcases the method's potential as an accurate simulation tool for biomechanical problems involving complex geometry, and it demonstrates its flexibility in dealing with different types of geometric description.
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DOI:
10.1016/j.jcp.2016.05.004
发表时间:
2016-08
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Masoud Safdari;A. Najafi;N. Sottos;P. Geubelle
通讯作者:
Masoud Safdari;A. Najafi;N. Sottos;P. Geubelle
影响因子:
3.1
作者:
N. Akbar;O. Bég
通讯作者:
O. Bég
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Elhaddad;N. Zander;S. Kollmannsberger;Ali Shadavakhsh;V. Nübel;E. Rank
通讯作者:
E. Rank
影响因子:
2.4
作者:
A. Wirth;R. Müller;G. H. van Lenthe
通讯作者:
G. H. van Lenthe
影响因子:
2.9
作者:
S.Bindick;M. Stiebler;M. Krafczyk
通讯作者:
M. Krafczyk