Table 6 Comparison of thermal stress and coupling stress at key positions of the piston.
From: Experimental and simulation study on aluminium alloy piston based on thermal barrier coating
Position | Thermal stress of the scheme (MPa) | Thermo-mechanical coupling stress of the scheme (MPa) | ||||||
|---|---|---|---|---|---|---|---|---|
A | B | C | D | A | B | C | D | |
Bottom surface of combustion chamber | 61.7 | 52.1 | 58.5 | 51.8 | 41.4 | 33.2 | 42.6 | 36.9 |
Throat | 48.6 | 59.1 | 47.8 | 53.8 | 54.3 | 65.2 | 51.4 | 57.9 |
First ring groove | 69.1 | 70.4 | 53.9 | 53.9 | 71.3 | 72.5 | 55.2 | 55.2 |
Bottom of the cooling gallery | 46.0 | 43.7 | 34.5 | 32.4 | 45.6 | 43.7 | 35.5 | 33.9 |
Top of the inner cavity | 64.4 | 57.9 | 47.7 | 42.4 | 44.5 | 38.1 | 28.9 | 23.9 |
