The quasi-static deformation and fracture behavior of novel high-strength steel for emerging applications

2013 ◽  
Vol 2 (1) ◽  
pp. 17-26 ◽  
Author(s):  
T. S. Srivatsan ◽  
K. Manigandan ◽  
A. M. Freborg ◽  
T. Quick
Keyword(s):  
High Strength Steel ◽  
Fracture Behavior ◽  
High Strength ◽  
Static Deformation ◽  
Deformation And Fracture

The quasi static deformation and fracture behavior of aluminum alloy 7150

2008 ◽  
Vol 29 (4) ◽  
pp. 742-751 ◽  
Author(s):  
T.S. Srivatsan ◽  
G. Guruprasad ◽  
Vijay K. Vasudevan
Keyword(s):  
Aluminum Alloy ◽  
Fracture Behavior ◽  
Static Deformation ◽  
Deformation And Fracture

Investigation of ductile fracture behavior of lap-welded joints with 460 MPa steel

2017 ◽  
Vol 21 (9) ◽  
pp. 1376-1387 ◽  
Author(s):  
Gang Shi ◽  
Yufeng Chen
Keyword(s):  
Ductile Fracture ◽  
Welded Joints ◽  
High Strength Steel ◽  
Fracture Behavior ◽  
Steel Structures ◽  
High Strength ◽  
Welded Steel ◽  
Fracture Parameters ◽  
Tension Tests ◽  
Micromechanics Models

Fractures in welded connections usually occurred at Earthquake. The lap-welded joints are an important type of welded connections in high strength steel structures. In this article, the ductile fracture behavior of lap-welded joints has been studied experimentally and numerically with 460 MPa steel. A series of coupon tests were used to determine two corresponding weld materials (ER55-D2 and ER55-G) mechanical properties. Two micromechanics models (void growth model and stress-modified critical strain models) had been calibrated by circumferentially notched tension specimens and calculated the fracture parameters numerically, which had been applied in predicting in five lap-welded joints. The experimental study showed that the fracture mode of 460 MPa lap-welded joints exhibited plastic damage under the tension tests. Numerical analysis of the fracture parameters also showed that the ductile fracture behavior of lap-welded joint with ER55-G was better. The study establishes an accurate numerical model for analyzing the ductile fracture behavior of Q460 high strength steel lap-welded joints that is applicable in predicting the fracture failure of welded steel structures.

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