Abstract
The paper analyzes the stress-strain state of a thermal barrier coating buckled on an elastic substrate under thermal shock. For the analysis, the stability loss of an orthotropic plate on an elastic substrate (Winkler foundation) is modeled using the Euler method on the assumption that compressive stresses arise in the plate as it expands on heating while the substrate remains cold and dimensionally stable. The deflection amplitude and stresses in the heated plate are determined, and the stress-strain state in the substrate is estimated by solving a plane elastic problem with displacement boundary conditions. The data suggest that both compressive and tensile stresses arise at the coating-substrate interface since the coating becomes unstable and that extrusion and intrusion zones appear in the substrate, showing their chessboard distribution in the plane strain case.
| Original language | English |
|---|---|
| Pages (from-to) | 498-507 |
| Number of pages | 10 |
| Journal | Physical Mesomechanics |
| Volume | 21 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Nov 2018 |
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Keywords
- stability loss
- thermal barrier coatings
- thermal shock
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Surfaces and Interfaces
Cite this
Stress-Strain State in a Buckled Thermal Barrier Coating on an Elastic Substrate. / Lyukshin, P. A.; Lyukshin, B. A.; Matolygina, N. Yu; Panin, S. V.
In: Physical Mesomechanics, Vol. 21, No. 6, 01.11.2018, p. 498-507.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Stress-Strain State in a Buckled Thermal Barrier Coating on an Elastic Substrate
AU - Lyukshin, P. A.
AU - Lyukshin, B. A.
AU - Matolygina, N. Yu
AU - Panin, S. V.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - The paper analyzes the stress-strain state of a thermal barrier coating buckled on an elastic substrate under thermal shock. For the analysis, the stability loss of an orthotropic plate on an elastic substrate (Winkler foundation) is modeled using the Euler method on the assumption that compressive stresses arise in the plate as it expands on heating while the substrate remains cold and dimensionally stable. The deflection amplitude and stresses in the heated plate are determined, and the stress-strain state in the substrate is estimated by solving a plane elastic problem with displacement boundary conditions. The data suggest that both compressive and tensile stresses arise at the coating-substrate interface since the coating becomes unstable and that extrusion and intrusion zones appear in the substrate, showing their chessboard distribution in the plane strain case.
AB - The paper analyzes the stress-strain state of a thermal barrier coating buckled on an elastic substrate under thermal shock. For the analysis, the stability loss of an orthotropic plate on an elastic substrate (Winkler foundation) is modeled using the Euler method on the assumption that compressive stresses arise in the plate as it expands on heating while the substrate remains cold and dimensionally stable. The deflection amplitude and stresses in the heated plate are determined, and the stress-strain state in the substrate is estimated by solving a plane elastic problem with displacement boundary conditions. The data suggest that both compressive and tensile stresses arise at the coating-substrate interface since the coating becomes unstable and that extrusion and intrusion zones appear in the substrate, showing their chessboard distribution in the plane strain case.
KW - stability loss
KW - thermal barrier coatings
KW - thermal shock
UR - http://www.scopus.com/inward/record.url?scp=85060714454&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060714454&partnerID=8YFLogxK
U2 - 10.1134/S1029959918060048
DO - 10.1134/S1029959918060048
M3 - Article
VL - 21
SP - 498
EP - 507
JO - Physical Mesomechanics
JF - Physical Mesomechanics
SN - 1029-9599
IS - 6
ER -