| Pitfall | Solution | |---------|----------| | Using implicit solver for high-frequency motion | Use explicit for > 10 Hz content or strong nonlinearity. | | Incorrect Rayleigh damping causing energy growth | Check frequency range; use *ENERGY PRINT to verify. | | Boundary reflections in SSI model | Use infinite elements or absorbent boundaries (viscous or Lysmer–Kuhlemeyer). | | Mass scaling too aggressive | Keep mass scaling factor < 5; monitor ALLPM (percent mass increase). | | Ignoring P-Delta effects | Activate NLGEOM=YES even for small strains. |
While traditional equivalent static methods and response spectrum analyses are common in standard structural engineering software, they often fail to capture the true nonlinear behavior of a structure during a catastrophic event. This is where comes into play. abaqus earthquake analysis