Abstract
This paper summarizes an on-going comprehensive effort to develop an integrated interdisciplinary modeling approach to simulate the performance properties of resistance spot welded joints. The integrated modeling approach incorporates a number of fundamental physical phenomena that occur during welding and under the subsequent service loading conditions. The approach consists of (1) process model that performs coupled electrical-thermal-mechanical computations to determine the temperature history and weld nugget growth based upon prescribed welding conditions; (2) microstructure model that determines the microstructure and property gradients in resistance spot welds based on steel's composition and temperature history of the welding process; and (3) structural model that incorporate the effects of the microstructure and propriety gradients to evaluate the load-carrying capacity of spot weld joints. This study was made using 0.81-mm-thick uncoated DQSK plain carbon steel.
| Original language | English |
|---|---|
| Pages (from-to) | 29-35 |
| Number of pages | 7 |
| Journal | Welding Research Abroad |
| Volume | 49 |
| Issue number | 2 |
| State | Published - Feb 2003 |
Keywords
- Austenite
- Bainite
- Contact resistance
- Cooling rate
- Electrical resistance
- Interfaces
- Microstructure
- Pearlite
- Phase diagrams
- Pressure
- Resistance welding
- Simulating
- Spot welding
- Strength
- TTT diagrams
- Temperature
- Temperature distribution
- Welded joints