Details
Original language | English |
---|---|
Article number | e70065 |
Journal | International Journal for Numerical Methods in Engineering |
Volume | 126 |
Issue number | 12 |
Publication status | Published - 15 Jun 2025 |
Abstract
Thermo-mechanical damage, such as thermal shock, is a common engineering problem. It constitutes a challenging problem that damage and temperature are conversely interacting with each other: Material damage leads to an increase in temperature due to energy dissipation; temperature also influences damage evolution. On the one hand, an increase in temperature decreases the damage threshold, which makes damage more likely to occur. On the other hand, a non-uniform temperature distribution can cause internal stresses within the material, leading to the occurrence of damage. Taking all of the above points into account, we introduce a novel approach based on the Hamilton principle for thermo-mechanically coupled, gradient-enhanced damage modeling. To accelerate the computation speed, we adopt the Neighbored Element Method to calculate the Laplace operator in the governing equation of both the damage variable and temperature. The numerical examples show the robustness and efficiency of our method.
ASJC Scopus subject areas
- Mathematics(all)
- Numerical Analysis
- Engineering(all)
- General Engineering
- Mathematics(all)
- Applied Mathematics
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In: International Journal for Numerical Methods in Engineering, Vol. 126, No. 12, e70065, 15.06.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A Novel Approach to Thermo-Mechanically Coupled, Gradient-Enhanced Damage Modeling
AU - Liu, Fangrui
AU - Jantos, Dustin Roman
AU - Junker, Philipp
N1 - Publisher Copyright: © 2025 The Author(s). International Journal for Numerical Methods in Engineering published by John Wiley & Sons Ltd.
PY - 2025/6/15
Y1 - 2025/6/15
N2 - Thermo-mechanical damage, such as thermal shock, is a common engineering problem. It constitutes a challenging problem that damage and temperature are conversely interacting with each other: Material damage leads to an increase in temperature due to energy dissipation; temperature also influences damage evolution. On the one hand, an increase in temperature decreases the damage threshold, which makes damage more likely to occur. On the other hand, a non-uniform temperature distribution can cause internal stresses within the material, leading to the occurrence of damage. Taking all of the above points into account, we introduce a novel approach based on the Hamilton principle for thermo-mechanically coupled, gradient-enhanced damage modeling. To accelerate the computation speed, we adopt the Neighbored Element Method to calculate the Laplace operator in the governing equation of both the damage variable and temperature. The numerical examples show the robustness and efficiency of our method.
AB - Thermo-mechanical damage, such as thermal shock, is a common engineering problem. It constitutes a challenging problem that damage and temperature are conversely interacting with each other: Material damage leads to an increase in temperature due to energy dissipation; temperature also influences damage evolution. On the one hand, an increase in temperature decreases the damage threshold, which makes damage more likely to occur. On the other hand, a non-uniform temperature distribution can cause internal stresses within the material, leading to the occurrence of damage. Taking all of the above points into account, we introduce a novel approach based on the Hamilton principle for thermo-mechanically coupled, gradient-enhanced damage modeling. To accelerate the computation speed, we adopt the Neighbored Element Method to calculate the Laplace operator in the governing equation of both the damage variable and temperature. The numerical examples show the robustness and efficiency of our method.
UR - http://www.scopus.com/inward/record.url?scp=105008268388&partnerID=8YFLogxK
U2 - 10.1002/nme.70065
DO - 10.1002/nme.70065
M3 - Article
AN - SCOPUS:105008268388
VL - 126
JO - International Journal for Numerical Methods in Engineering
JF - International Journal for Numerical Methods in Engineering
SN - 0029-5981
IS - 12
M1 - e70065
ER -