2006 - Fisia Italimpianti

Finite Element Modeling of pump frames, calibration with experimental vibration measurements and numerical verification of retrofitting solutions. Non-linear modeling of the contact surface of the bolted flange, evaluation of the stress amplitude in bolts and relevant parts of the frame. Fatigue analysis by hot-spot method.

Cesare Rizzo (DINAEL, University of Genova)
Chiara Calderini (DICAT, University of Genova)



FE Model of column pipe and discharge elbow


FE Model - Detail of the bolted flange. Links to model bolts and contact elements on the flange contact surface.


Stress analysis calibrated by in-field vibration measurements


Flange contact pressure at the characteristic amplitude of vibration


Bolt stress at the characteristic amplitude of vibration


Numerical verificatio of column pipe modifications


Modified structure