Prediction of Residual Stresses in a Plate Subject to Accelerated Cooling-A 3-D Finite Element Model and an Approximate Model-

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  • Koo Jin-Mo
    Department of Mechanical Engineering, Pohang University of Science and Technology
  • Ryoo Syong-Ryong
    Plate Research Group, POSCO Technical Research Laboratories
  • Lee Chang-Sun
    Plate Research Group, POSCO Technical Research Laboratories
  • Sun Cheng-Gang
    Stainless Steel Research Group, POSCO Technical Research Laboratories
  • Han Heung-Nam
    School of Materials Science and Engineering, Seoul National University
  • Hwang Sang-Moo
    Department of Mechanical Engineering, Pohang University of Science and Technology

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Other Title
  • Prediction of Residual Stresses in a Plate Subject to Accelerated Cooling
  • —A 3-D Finite Element Model and an Approximate Model—

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Description

In this paper, we present finite element (FE) models for the analysis of heat transfer and for the analysis of 3-D elastic–viscoplastic deformation of steel at elevated temperatures. Then, it is shown that, in conjunction with the models for the prediction of phase fraction, and thermal and mechanical properties, an integrated FE model can be obtained which is capable of predicting the detailed aspects of the thermal and mechanical behavior of the plate subject to accelerated cooling in a plate mill. Also, we present an approximate model for on-line prediction. The prediction accuracy of the approximate model is examined through comparison with the predictions from the integrated FE model. Then, using the model, the effect of some selected process variables on the residual stress distributions is investigated.

Journal

  • ISIJ International

    ISIJ International 47 (8), 1149-1158, 2007

    The Iron and Steel Institute of Japan

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