Media Center

Residual stresses and distortion of components due to welding can significantly influence the components’ functionality and life time. The stresses affect the calculation of the static strength of the structure as well as the assessment of fatigue, wearing and crack corrosion behavior. Therefore, the determination of residual welding stresses as well as respective process optimizations are essential steps for ensuring the components’ safety and stability.

 

Residual stress and distortion in structures caused by welding can be calculated by means of numerical simulation based on the Finite Element Method. Our team at Framatome proceeds as follows:

  •  Determination of the relevant process parameters and material properties
  • Finite Element Modeling of the examined structure (2D or 3D)
  • Calculation of the temperature distribution in the component during welding
  • Calculating the residual stresses and distortion of the component based on the temperature distribution
  • Application of loads occurring during operation
  • Evaluating the calculations.

The impact of welding on the residual stresses of the component can be determined fast and cost-efficiently compared to experimental test arrangements. Consequently, finite element calculations are the perfect tool for optimizing pending welding as well as for evaluating already performed welding.


Your Benefits

  • Long-time experience with the Finite Element Method
  • Cost saving compared to experimental methods for residual welding stress determination
  • Short response times even for complex tasks
  • Extensive laboratory infrastructure in associated disciplines (materials testing, corrosion, fracture mechanics, chemistry, radiochemistry, hot cells, thermal hydraulics and component testing)
  • Integrated solution competence from one source

 

References

Western Europe: Germany, Sweden, Switzerland, Spain

Interested in Simulation of Weld Residual Stresses?