Browse > Article
http://dx.doi.org/10.1016/j.ijnaoe.2017.05.001

Development of stress correction formulae for heat formed steel plates  

Lim, Hyung Kyun (Hyundai Mipo Dockyard Co., Ltd.)
Lee, Joo-Sung (School of Naval Architecture and Ocean Engineering, University of Ulsan)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.10, no.2, 2018 , pp. 141-152 More about this Journal
Abstract
The heating process such as line heating, triangular heating and so on is widely used in plate forming of shell plates found in bow and stern area of outer shell in a ship. Local shrinkage during heating process is main physical phenomenon used in plate forming process. As it is well appreciated, the heated plate undergoes the change in material and mechanical properties around heated area due to the harsh thermal process. It is, therefore, important to investigate the changes of physical and mechanical properties due to heating process in order to use them plate the design stage of shell plates. This study is concerned with the development of formula of plastic hardening constitutive equation for steel plate on which line heating is applied. In this study the stress correction formula for the heated plate has been developed based on the numerical simulation of tension test with varying plate thickness and heating speed through the regression analysis of multiple variable case. It has been seen the developed formula shows very good agreement with results of numerical simulation. This paper ends with usefulness of the present formula in examining the structural characteristic of ship's hull.
Keywords
Heat input; Heat transfer analysis; Line heating; Shell plate; Stress correction; Thermo-elasto-plastic analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Aronofsky, J., 1951. Evaluation of stress distribution in the symmetrical neck of flat tensile bars. J. Appl. Mech. 18, 75-84.
2 ASTM E8, 2004. Standard Test Methods from Tension Testing of Metallic Materials. American Society for Testing and Materials.
3 Bridgman, P.W., 1952. Studies in Large Plastic Flow and Fracture. McGraw-Hill, New York.
4 Choung, J.M., 2007. On the Fracture Criteria of Steels for Marine Structures Subjected to Impact Loadings (Ph.D thesis). University of Ulsan.
5 Ha, Y.S., 2001. A Study on the Prediction of Plate Deformation by Heating of Weaving Path in Thick Plate Bending (Master thesis). Seoul National University.
6 Hollomon, J.H., 1945. Tensile deformation. Trans. AIME 162, 268-290.
7 Jang, C.D., Ko, D.E., Kim, B.I., Park, J.U., 2001. An experimental study of characteristics of plate deformation by heating process. J. Soc. Nav. Archit. Korea 38 (2), 62-70.
8 Jang, C.D., Ha, Y.S., Ko, D.E., Moon, S.C., 2002. Determination of inherent strain regions to estimate plate deformation by line heating. J. Soc. Nav. Archit. Korea 39 (1), 82-89.   DOI
9 Kim, J.W., Lee, J.S., 2011. A study of thermal deformation characteristics of steel plate due to multi-line heating. In: Proceedings of the Annual Autumn Meeting, SNAK, Mokpo, pp. 849-852, 3-4 November.
10 Lee, B.I.,Yoo, H.S., Byun, G.G., Kim, H.G., 2002. Astudy on automation of steel plate forming by heating method. J. Soc. Nav. Archit. Korea 39 (2), 34-44.   DOI
11 Lee, J.S., 1996. Plate forming automation system of steel plates by line heating method (II). J. Soc. Nav. Archit. Korea 33 (3), 81-93.
12 Lee, J.S., 1997. Plate forming automation system of steel plates by line heating method (III). J. Soc. Nav. Archit. Korea 34 (2), 85-89.
13 Lim, H.K., 2012. Study on the Plasticity and Fracture of Steels for Ship Shell Structure by Line Heating (Ph.D. thesis). University of Ulsan.
14 Ling, Y., 1996. Uniaxial true stress-strain after necking. AMP J. Technol. 5, 37-48.
15 Nomoto, T., Ohmori, T., Enosawa, M., Aoyama, K., Saitoh, M., 1991. Development of simulator for plate bending by line heating. J. Soc. Nav. Archit. Jpn. 168, 527-535.
16 Shin, J.G., 1992. A two-dimensional simulator for plate forming by line heating. J. Soc. Nav. Archit. Korea 29 (1), 191-200.
17 Simulia, 2013. Introduction to Abaqus. BB-Media, Korea.
18 Tsuji, I., Okumura, Y., 1988. A study on line heating process for plate bending of ship steels. J. West. Soc. Nav. Archit. 76, 149-160.
19 Zhang, K.S., Li, Z.H., 1994. Numerical analysis of the stress-strain curve and fracture initiation for ductile material. Eng. Fract. Mech. 49, 235-241.   DOI
20 Lee, J.S., 2010. Development of knowledge-based method to automatically derive the deformation estimation formula due to line heating. J. Weld. Join. 28 (1), 92-99.   DOI