A hysteresis approach of thermal expansion effect on residual stresses due to welding
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Bibliographic record
Abstract
A three-dimensional model with shell elements is used, with the Ansys finite element program, to simulate a GMAW welding process in an AISI 516 carbon steel plate. The objective of this work is to approximate the volume change effect on welding residual stresses by using a modified curve of the coefficient of thermal expansion (CTE). This modification consists of introducing a hysteresis behavior into the CTE curve. The existence of such hysteresis is consistent with the fact that a similar hysteresis is observed in the curve of the thermal strain during a heating and cooling cycle. It is found that the hysteresis effect of CTE could make the longitudinal residual stress well below yield stress in the weld.
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| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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