Study on Distributed Properties of Welding Residual Stress in Bridge Nodes

Jia Liu; Run Chang Zhang; Wei Lian Qu; Li Jiang

doi:10.4028/www.scientific.net/AMM.501-504.1166

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 501-504Study on Distributed Properties of Welding...

Study on Distributed Properties of Welding Residual Stress in Bridge Nodes

Abstract:

The distributed properties of residual stress in bridge nodes have been investigated in the paper. Based on some bridge node, the three dimensional thermodynamics finite element model has been established, meanwhile, the double ellipsoidal distributed heat source model are used to simulate the whole welding procedure of bridge nodes according to the welding parameters. Thus, the distributed regularities of residual stress of bridge node have been obtained. Simulating results show that the residual stresses distribute uniformly in the welding direction, and the max value reaches the yield strength of steel Q345qD. Besides, the residual stress in the lateral direction reaches the max value in the place of welding district, and decreases rapidly when far away from the welds.

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Periodical:

Applied Mechanics and Materials (Volumes 501-504)

Pages:

1166-1169

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.501-504.1166

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Online since:

January 2014

Authors:

Jia Liu, Run Chang Zhang, Wei Lian Qu, Li Jiang

Keywords:

Bridge Nodes, Distribution Property, Numerical Simulation, Residual Stress

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References

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