Numerical Simulation of Bending Performance of Laser-Welded I-Core Sandwich Plates Considering Weld Material Properties

Abstract:

The properties of the base metal, weld and joint of CCS-B material for sandwich plate used in ship structurewasconfirmedthrough the tensile test,which provided the data parameters for the finite element simulation;The three points bending test for laser-weldedI-coresandwich plate was simulated by ABAQUS,and two kinds of models were establishedby considering and without considering weld material properties, which load-displacement curve shows that the influence of the weld material properties is larger to plates stiffness, but less to bearing capacity; For the model whichwas considered the weld material property, the development of plastic zone and the measurement of stress state show:In the elastic stage, the localposition yield in the junction zone between the web and upper and lower weld; In the plastic stage,the large areayield in the panel and the web of T-joint zone; The mapping relationship from the stress state to macroscopic deformation shows that both of the panel and the web occur S shape deformation and the whole web plate occur inclination deformation.

• Periodical: Advanced Materials Research (Volume 742)
• Pages: 24-29
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.742.24
• Online since: August 2013
• Authors: Yu Ping Sun, Wei Li Zhou, Hui Li, Jin Mei Li
• Keywords: Bearing Capacity, I-Core, Laser-Welded, Sandwich Plate, Stiffness, Three Points Bending Test

References

[1] Zok FW., Rathbun H., He M., Ferri E., et al. Structural performance of metallic sandwich panels with square honeycombcores[J]. Philosophical Magazine,Vol.85, (2005), pp.3207-3234.

DOI: 10.1080/14786430500073945

[2] WicksN., Hutchinson J W.. Performance of sandwich plates with truss cores[J]. Mechanics of Materials, Vol.36, (2004), pp.739-751.

DOI: 10.1016/j.mechmat.2003.05.003

[3] Romanoff J.,Varsta P..Bending response of web-core sandwich plates[J].Composite Structures, Vol.81, (2007), pp.292-302.

DOI: 10.1016/j.compstruct.2006.08.021

[4] Romanoff J.,Varsta P..Bending response of web-core sandwich beams[J].Composite Structures, Vol.73, (2006), pp.478-487.

DOI: 10.1016/j.compstruct.2005.02.018

[5] Kolsters H., Wennhage P..Optimization of laser-welded sandwich panels with multiple design constraints [J]. Marine Structures, Vol.22,(2009), pp.154-171.

DOI: 10.1016/j.marstruc.2008.09.002

[6] Wu Li, Liu Jun, Cheng Yuansheng.A new algorithm for solving bending response ofsquare-honeycomb sandwich plates [J].Journal of Ship Mechanics,Vol.16, (2012), pp.926-934 (in Chinese).

[7] Yuping Sun, Jin Li, Zunli Teng.The optimization design of laser welded sandwich plate structure[J]. Materials Processing Technology , Vol.418-420 (2012) , pp.656-659..

DOI: 10.4028/www.scientific.net/amr.418-420.656

[8] GB/T 1456-2005, Test method for flexuralpropertiesofsandwichconstruction [S](in Chinese).

[9] Li Jiaju,Zeng Hanmin.TheStudy and Applieationof TestMethod of HoneycombSandwichPanel StiffnessDissociationof Compo sites[J]. ACTASCIENTIARUMNATURALIUMUNIVERSITATISSUNYATSENI,Vol. 3, (1994),pp.68-72(in Chinese).