[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 4, pp.308-315

ISSN: 2508-5107 (Online)

Print publication date 15 Aug 2021

Received 07 May 2021 Revised 10 Jun 2021 Accepted 19 Jul 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.4.308

판구조물의 절단에서 발생하는 잔류변형을 적용한 용접해석

윤희찬^a ; 노홍준^a ; 한영환^a ; 임헌봉^b ; 양현익^c^{, *}

Welding Analysis using Residual Stress and Deformation Generated During Cutting of Plate Structure

Hee-Chan Yoon^a ; Hong-Jun Noh^a ; Young-Hwan Han^a ; Hun-Bong Lim^b ; Hyun-Ik Yang^c^{, *}

aDepartment of Mechanical Design Engineering, Hanyang University
bDepartment of Mechanical Design Engineering, Myongji College
cDepartment of Mechanical Engineering, Hanyang University

Correspondence to: ^*Tel.: +82-31-400-5285 E-mail address: skynet@hanyang.ac.kr (Hyun-Ik Yang).

Abstract

Cutting and welding are essential processes in constructing complex steel structures. In these processes, local heating and cooling generate strains and stresses in the cut and welded areas, resulting in deformation of the entire structure. To accurately predict the welding deformation of the model, it is necessary to consider the effects of previous cutting. In this study, thermal conduction analysis was used to derive the temperature history via cutting and bead-on-plate welding. Additionally, temperature history was applied to thermal–elastic–plastic analysis of welds while cutting. When applied to large structures, a simplified analysis was performed. Thus, the thermal–elastic–plastic analysis results were applied in a shell structure as equivalent shrinkage and moment, and elastic analysis was performed. Through this study, it was confirmed that cutting influenced the final welding deformation. Further, the suitability of the simplified method for analyses of large structures was verified.

Keywords:

Laser cutting, Heat conduction analysis, Thermal-elastic-plastic analysis, Inherent strain, Welding distortion, Simplified method

References

Arif, A. F. M., Yilbas, B. S., Aleem, B. J. A., 2009, Laser Cutting of Thick Sheet Metals: Residual Stress Analysis, Opt. Laser Technol., 41:3 224-232. [https://doi.org/10.1016/j.optlastec.2008.07.006]
Yilbas, B. S., Arif, A. F. M., 2011, Laser Cutting of Steel and Thermal Stress Development, Opt. Laser Technol., 43:4 830-837. [https://doi.org/10.1016/j.optlastec.2010.11.002]
Wang, J., Rashed, S., Murakawa, H., 2014, Mechanism Investigation of Welding Induced Buckling using Inherent Deformation Method, Thin-Walled Struct., 80 103-119. [https://doi.org/10.1016/j.tws.2014.03.003]
Kartal, M. E., Kang, Y.-H., Korsunsky, A. M., Cocks, A. C. F., Bouchard, J. P., 2016, The Influence of Welding Procedure and Plate Geometry on Residual Stresses in Thick Components, Int. J. Solids Struct., 80 420-429. [https://doi.org/10.1016/j.ijsolstr.2015.10.001]
Ha, Y., 2011, A Study on Weldment Boundary Condition for Elasto-Plastic Thermal Distortion Analysis of Large Welded Structures, J. Welding and Joining, 29:4 48-53. [https://doi.org/10.5781/KWJS.2011.29.4.410]
Maeda, A., Jin, Y., Kuboki, T., 2015, Light Press of Sheet Metal Edge for Reducing Residual Stress Generated by Laser Cutting Considering Mechanical Properties and Intensity of Residual Stress, J. Mater. Process. Technol., 225 178-184. [https://doi.org/10.1016/j.jmatprotec.2015.05.019]
Yilbas, B. S., Akhtar, S. S., 2014, Laser Bending of Metal Sheet and Thermal Stress Analysis, Opt. Laser Technol., 61 34-44. [https://doi.org/10.1016/j.optlastec.2013.12.023]
Yilbas, B. S., Akhtar, S., Keles, O., 2014, Laser Cutting of Triangular Blanks from Thick Aluminum Foam Plate: Thermal Stress Analysis and Morphology, Appl. Therm. Eng., 62:1 28-36. [https://doi.org/10.1016/j.applthermaleng.2013.09.026]
Murakawa, H., Deng, D., Ma, N., Wang, J., 2012, Applications of Inherent Strain and Interface Element to Simulation of Welding Deformation in Thin Plate Structures, Comput. Mater. Sci., 51:1 43-52. [https://doi.org/10.1016/j.commatsci.2011.06.040]
Deng, D., Zhou, Y., Bi, T., Liu, X., 2013, Experimental and Numerical Investigations of Welding Distortion Induced by CO₂ Gas Arc Welding in Thin-plate Bead-on joints, Mater. Des. (1980-2015), 52 720-729. [https://doi.org/10.1016/j.matdes.2013.06.013]
Kim, J. S., Kim, I. J., 2012, A Study on Characteristic of Residual Stresses in a wind Tower Using the Tandem Circumferential Welding Process, J. Korean Soc. Manuf. Technol. Eng., 21:6 938-945. [https://doi.org/10.7735/ksmte.2012.21.6.938]
Yilbas, B. S., Akhtar, S. S., 2011, Laser Cutting of Alloy Steel: Three-Dimensional Modeling of Temperature and Stress Fields, Mater. Manuf. Process., 26:1 104-112. [https://doi.org/10.1080/10426914.2010.501092]
Goldak, J., Chakravarti, A., Bibby, M., 1984, A New Finite Element Model for Welding Heat Sources, Metall. Mater. Trans. B, 15 299-305. [https://doi.org/10.1007/BF02667333]
Yilbas, B. S., Arif, A. F. M., 2008, Modelling of Residual Stresses during Laser Cutting of Small-diameter Holes, Proc. Inst. Mech. Eng. Part B-J. Eng. Manuf., 222:12 1577-1587. [https://doi.org/10.1243/09544054JEM1233]
Ko, D. E., Jang, C. D., Seo, S. I., Lee, H. W., 1999, Realtime Simulation of Deformation due to Line Heating for Automatic Hull Forming System, J. Soc. Nav. Archit. Korea, 36:4 116-127.
Jin, B. J., Park, M. H., Tun, T. J., Kim, I. S., Park, K. Y., Kim, Y., Yang, H. J., 2018, A Study on Performance Prediction of Purging Device using CFD in Laser Welding of Titanium Sheet, J. Korean Soc. Manuf. Technol. Eng., 27:1 70-75. [https://doi.org/10.7735/ksmte.2018.27.1.70]
Bang, Y., Kang, Y., Song, M., Jeon, Y., 2020, Analysis of Welding Conditions and Weld Joints of Advanced High-strength Steel Through Cold-metal Transfer Welding, J. Korean Soc. Manuf. Technol. Eng., 29:2 141-146. [https://doi.org/10.7735/ksmte.2020.29.2.141]