Effect of Hydrogen on the Fracture Behavior of High-Strength Cr-Mo Steel

2006 ◽  
pp. 55-60
Author(s):  
Mao Qiu Wang ◽  
Eiji Akiyama ◽  
Kaneaki Tsuzaki
Keyword(s):  
Fracture Behavior ◽  
High Strength

Loading rate effect on fracture behavior of fiber reinforced high strength concrete using a semi-circular bending test

2020 ◽  
Vol 240 ◽  
pp. 117681
Author(s):  
Mehran Aziminezhad ◽  
Sahand Mardi ◽  
Pouria Hajikarimi ◽  
Fereidoon Moghadas Nejad ◽  
Amir H. Gandomi
Keyword(s):  
High Strength Concrete ◽  
Fracture Behavior ◽  
Loading Rate ◽  
High Strength ◽  
Rate Effect ◽  
Bending Test ◽  
Fiber Reinforced ◽  
Strength Concrete

Analysis of fracture behavior of high-strength steels in tension after fire exposure

2021 ◽  
Vol 231 ◽  
pp. 111750
Author(s):  
Wen-Yu Cai ◽  
Jian Jiang ◽  
Yan-Bo Wang ◽  
Guo-Qiang Li
Keyword(s):  
Fracture Behavior ◽  
High Strength Steels ◽  
High Strength ◽  
Fire Exposure

Prediction of Fracture in Square-Cup Forming of Aluminium Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 703-706
Author(s):  
Zhong Qi Yu ◽  
Zhong Qin Lin ◽  
Yu Ying Yang
Keyword(s):  
Aluminium Alloy ◽  
Fracture Behavior ◽  
Fracture Criterion ◽  
High Strength ◽  
Fracture Initiation ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Ductile Fracture Criterion ◽  
Vehicle Mass ◽  
Experimental Values

Aluminum alloy sheet is becoming one of the main materials to take the place of steel components to reduce the vehicle mass due to the advantage of low special density, high strength and corrosion resistance. To predict the formability during the aluminium alloy sheet forming accurately, , a ductile fracture criterion developed by the authors, was for numerical simulation, in this paper. Fracture behavior in square-cup forming of the aluminium alloy LF21M was predicted by means of the criterion. Comparison of the predicted results with experimental values shows that the critical punch stroke and the fracture initiation position in square-cup forming of the aluminium alloy have been predicted successfully by the criterion.

Numerical Study of Fracture Behavior of Gradient Nano-Grained Metals by Molecular Dynamics Simulations

2020 ◽  
Vol 843 ◽  
pp. 99-104
Author(s):  
Ya Ping Liu ◽  
Fan Yang
Keyword(s):  
Molecular Dynamics ◽  
Grain Size ◽  
Crack Growth ◽  
Fracture Behavior ◽  
Numerical Study ◽  
High Strength ◽  
Initial Position ◽  
Common Neighbor ◽  
Gradient Distribution ◽  
Voronoi Method

Benefit from the gradient distribution of microstructure, gradient nanograined (GNG) metals have broad application prospect owing to their advantages of both high strength and good tensile ductility. Meanwhile, the fracture behavior of gradient nanograined metals is different from that of traditional homogeneous materials. Using molecular dynamics (MD) method, we simulated the propagation of a crack in a pre-cracked GNG Cu. Voronoi method was adopted to generate the polycrystalline topology with gradient grain size, and FCC copper atoms were filled into the topological structure. The crack was introduced by removing three layers of atoms. Then, the MD specimen was loaded to simulate the crack growth and/or blunting. The micro-defects were identified by the common neighbor analysis parameter. The effects of the grain size gradient and the crack tip initial position on the crack growth were also investigated.

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