Fatigue failure transition analysis in load-carrying cruciform welded joints based on strain energy density approach

2017 ◽  
Vol 40 (7) ◽  
pp. 1164-1177 ◽  
Author(s):  
W. Song ◽  
X. Liu ◽  
F. Berto ◽  
P. Wang ◽  
H. Fang
Keyword(s):  
Energy Density ◽  
Fatigue Failure ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Transition Analysis ◽  
Load Carrying

Strain energy density based fatigue cracking assessment of load-carrying cruciform welded joints

2017 ◽  
Vol 90 ◽  
pp. 142-153 ◽  
Author(s):  
Wei Song ◽  
Xuesong Liu ◽  
Filippo Berto ◽  
Ping Wang ◽  
Jie Xu ◽  
...  
Keyword(s):  
Energy Density ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Fatigue Cracking ◽  
Load Carrying

Fatigue Strength of Three Dimensional Welded Joints: A Synthesis Based on the Strain Energy Density over a Control Volume

2007 ◽  
Vol 348-349 ◽  
pp. 413-416
Author(s):  
M. Zappalorto ◽  
Filippo Berto ◽  
Paolo Lazzarin
Keyword(s):  
Experimental Data ◽  
Energy Density ◽  
Welded Joints ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Complex Geometry ◽  
Control Volume ◽  
Three Dimensional ◽  
Weld Toe ◽  
Weld Root

A recent approach based on the local strain energy density (SED) averaged over a given control volume is applied to well documented experimental data taken from the literature, all related to steel welded joints of complex geometry. This small size volume embraces the weld root or the weld toe, both regions modelled as sharp (zero notch radius) V-notches with different opening angles. The SED is evaluated from three-dimensional finite element models by using a circular sector with a radius equal to 0.28 mm. The data expressed in terms of the local energy fall in a scatter band recently reported in the literature, based on about 650 experimental data related to fillet welded joints made of structural steel with failures occurring at the weld toe or at the weld root.

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