Table 1 Transformation of nodal forces in FE fatigue
From: Structural Stress–Fatigue Life Curve Improvement of Spot Welding Based on Quasi-Newton Method
Point 1 | Point 2 | Point 3 | ||
|---|---|---|---|---|
FE fatigue | NASTRAN CBAR | FE fatigue | NASTRAN CBAR | FE-fatigue |
FX1 | − Z force | FX2 | Z force | FX1 |
FY1 | Y force | FY2 | − Y force | FY1 |
FZ1 | X force | FZ2 | − X force | FZ1 |
MX1 | − Z moment1 | MX2 | Z moment2 | (MX1*t2 + MX2*t1)/(t+ t2) |
MY1 | − Y moment1 | MY2 | Y moment2 | (MY1*t2 + MY2*t1)/(t1+t2) |
MZ1 | X moment | MZ2 | − X moment | (MZ1*t2 + MZ2*t1)/(t1 + t2) |