Fatigue assessment of cruciform joints: Comparison between Strain Energy Density predictions and current standards and recommendations

2021 ◽  
Vol 230 ◽  
pp. 111708
Author(s):  
Pietro Foti ◽  
Dario Santonocito ◽  
Giacomo Risitano ◽  
Filippo Berto
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Cruciform Joints ◽  
Fatigue Assessment ◽  
Current Standards

scholarly journals Local strain energy density for the fatigue assessment of hot dip galvanized welded joints: some recent outcomes

2017 ◽  
Vol 11 (42) ◽  
pp. 205-213 ◽  
Author(s):  
M. Peron ◽  
S.M.J. Razavi ◽  
F. Berto ◽  
J. Torgersen ◽  
F. Mutignani
Keyword(s):  
Energy Density ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Local Strain ◽  
Fatigue Assessment

Assessment of Welded Joints by Strain Energy Density Approach Accounting for Misalignments and Geometrical Imperfections

2017 ◽  
Author(s):  
Marco Gaiotti ◽  
Cesare Mario Rizzo ◽  
Filippo Berto
Keyword(s):  
Energy Density ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Control Volume ◽  
Element Analysis ◽  
Fatigue Assessment ◽  
Magnification Factors ◽  
Notch Stress ◽  
Geometrical Imperfections ◽  
Straightforward Computation

Among recently introduced fatigue assessment approaches, the ones based on the notch stress intensity factor (N-SIF) concept appear to be very promising, both because of their theoretically soundness and because of the possibility of straightforward computation of parameters believed to govern the fatigue process. Actually, while such approaches can be considered in between stress-based approaches and crack propagation ones, quantities like N-SIF and strain energy density in a control volume can be evaluated by finite element analysis according to nowadays well-established procedures, mostly already implemented in commercial FEM software. The present study moves from a former one, dealing with butt joints between typical shipbuilding shell plates, and aims at assessing how the misalignment influences the fatigue strength estimation when applying the strain energy density approach. Eventually, the capabilities of such approach in accounting for misalignments is demonstrated and results are found in agreement with magnification factors currently recommended by guidelines and rules when applying other, stress based, fatigue assessment approaches.

Sign in / Sign up

Export Citation Format

Share Document