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Titel:

An essentially non-hourglass formulation for total Lagrangian smoothed particle hydrodynamics

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Wu, Dong; Zhang, Chi; Tang, Xiaojing; Hu, Xiangyu
Abstract:
The total Lagrangian smoothed particle hydrodynamics (TL-SPH) for elastic solid dynamics suffers from hourglass modes which can grow and lead to the failure of simulation for problems with large deformation. To address this long-standing issue, we present an essentially non-hourglass formulation based on volumetric-deviatoric stress decomposition. Inspired by the fact that the artifact of nonphysical zigzag particle distribution induced by the hourglass modes is mainly characterized by shear def...     »
Stichworte:
Hourglass modes; Kirchhoff stress; Smoothed particle hydrodynamics; Total Lagrangian formulation; Zero-energy modes
Dewey Dezimalklassifikation:
620 Ingenieurwissenschaften
Zeitschriftentitel:
Computer Methods in Applied Mechanics and Engineering
Jahr:
2023
Band / Volume:
407
Seitenangaben Beitrag:
115915
Nachgewiesen in:
Scopus
Sprache:
en
Volltext / DOI:
doi:10.1016/j.cma.2023.115915
Verlag / Institution:
Elsevier BV
E-ISSN:
0045-7825
Hinweise:
Funding text D. Wu is partially supported by the China Scholarship Council (No. 201906130189 ). C. Zhang and X.Y. Hu would like to express their gratitude to the German Research Foundation (DFG) for their sponsorship of this research under grant number DFG HU1527/12-4 .
Eingereicht (bei Zeitschrift):
14.10.2022
Angenommen (von Zeitschrift):
23.01.2023
Publikationsdatum:
01.03.2023
TUM Einrichtung:
Lehrstuhl für Aerodynamik und Strömungsmechanik
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