Behaviour of ultra-high strength steel hollow tubes subjected to low velocity lateral impact: Experiment and finite element analysis

2019 ◽  
Vol 134 ◽  
pp. 524-536 ◽  
Author(s):  
Wei Li ◽  
Ying-Zhuo Gu ◽  
Lin-Hai Han ◽  
Xiao-Ling Zhao ◽  
Rui Wang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Strength Steel ◽  
High Strength ◽  
Lateral Impact ◽  
Low Velocity ◽  
Element Analysis ◽  
Ultra High Strength Steel ◽  
Impact Experiment

Experimental fatigue characterization and elasto-plastic finite element analysis of notched specimens made of direct-quenched ultra-high-strength steel

2016 ◽  
Vol 231 (22) ◽  
pp. 4209-4226 ◽  
Author(s):  
Mohammad Dabiri ◽  
Matti Isakov ◽  
Tuomas Skriko ◽  
Timo Björk
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Strength Steel ◽  
Low Cycle Fatigue ◽  
High Strength ◽  
Cyclic Softening ◽  
Cycle Fatigue ◽  
Element Analysis ◽  
Notched Specimens ◽  
Ultra High Strength Steel

The low-cycle fatigue behavior of a direct-quenched ultra-high-strength steel was experimentally characterized and numerically modeled. Fatigue and cyclic parameters were obtained by conducting strain-controlled low-cycle fatigue tests on uniform-gage specimens. Surface residual stresses were minimized and axial deflection eliminated by optimization of machining parameters and post-machining electro-polishing. The steel material showed cyclic softening and decrease in yield strength. Cyclic softening, stabilized response, and the cyclic stress–strain curve were numerically simulated using finite element analysis with a model capable of describing nonlinear kinematic-isotropic hardening. The results showed good agreement with experimental values and validated the model’s ability to simulate the softening and cyclic stabilization of the material under investigation. The same numerical method was then used in elasto-plastic stress–strain analysis of notched specimens made of the same material to make fatigue life predictions. Estimated lives were compared with predictions made by analytical approximations such as the linear rule, Neuber’s rule, and the strain energy density method and verified by experimental data. Finite element analysis using stabilized cyclic response yields the most accurate predictions and, thus, provides an effective tool for the fatigue analysis of this material.

Finite Element Analysis of Shear Behavior of Reinforced Concrete Beam Strengthened by High-Strength Steel Wire Mesh

2013 ◽  
Vol 482 ◽  
pp. 15-19
Author(s):  
Chen Xing Yang ◽  
Zheng Liu ◽  
Li Ping Sun ◽  
Jiong Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Shear Strength ◽  
High Strength Steel ◽  
Steel Wire ◽  
High Strength ◽  
Wire Mesh ◽  
Element Analysis ◽  
Strength And Stiffness ◽  
Steel Wire Mesh

Based on the experimental study of shear strengthened of reinforced concrete rectangular beam strengthened by high-strength steel wire mesh and polymer mortar , the finite element extended analysis was used. The finite element analysis software showed that with the increasing of the strand dosage and reinforcement strand length,the shear strength and stiffness of strengthened members improved . However,with the increasing of shear span ratio , the shear strength and stiffness reduced obviously .

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