Investigation of Inherent Deformation in Fillet Welded Thin Plate T-joints Based on Interactive Substructure and Inverse Analysis Method

In this paper, the inherent deformation of fillet welded thin plate Tjoints is studied. The prediction procedure of inherent deformation consists of three parts: part one, a three dimensional (3D) thermo-elastic-plastic analysis using an in house finite element (FE) code of interactive substructure method (ISM) is utilized to obtain the welding distortions; part two, corresponding experiments are carried out to verify the computational results of ISM; part three, using the verified computational results, the inverse analysis is utilized to evaluate the welding inherent deformation. Based on the results in this study, an inherent deformations database of fillet welded thin plate T-joints with 8 welding materials is developed. Meanwhile, the influence of welding heat input parameter on inherent deformation is discussed. The results show that the prediction procedure of inherent deformation is effectiveness. The inherent deformation is the key parameters to estimate distortion in fillet welded thin plate T-joints by elastic analysis. Welding heat input parameter and material properties have significant influence on welding inherent deformation.

[1]  Tom Gray,et al.  Computationally efficient welding distortion simulation techniques , 2005 .

[2]  P. Dong.  Residual stresses and distortions in welded structures: A perspective for engineering applications , 2005 .

[3]  Alberto Milazzo,et al.  Global/Local FEM-BEM Stress Analysis of Damaged Aircraft Structures , 2008 .

[4]  John Goldak,et al.  Finite element analysis of weld distortion in carbon and stainless steels , 1990 .

[5]  Mohammad Rahim Nami,et al.  Prediction of welding buckling distortion in a thin wall aluminum T joint , 2007 .

[6]  Yuh J. Chao,et al.  Effects of temperature-dependent material properties on welding simulation , 2002 .

[7]  Tom Gray,et al.  Computational prediction of out-of-plane welding distortion and experimental investigation , 2005 .

[8]  Jianxun Zhang,et al.  Parametric studies of welding distortion in fillet welded structure based on FEA using iterative substructure method , 2007 .

[9]  T. Teng,et al.  Analysis of residual stresses and distortions in T-joint fillet welds , 2001 .

[10]  Seung Il Seo,et al.  A Study on the Prediction of Deformations of Welded Ship Structures , 1999 .

[11]  Adan Vega,et al.  Analysis and Prediction of Multi-Heating Lines Effect on Plate Forming by Line Heating , 2008 .

[12]  Yukio Ueda,et al.  Prediction of Residual Stresses in Welded T- and I-Joints Using Inherent Strains , 1996 .

[13]  Lars-Erik Lindgren,et al.  FINITE ELEMENT MODELING AND SIMULATION OF WELDING. PART 2: IMPROVED MATERIAL MODELING , 2001 .

[14]  Shinobu Yoshimura,et al.  Finite element analyses of dynamic problems using graphics hardware , 2008 .

[15]  Hidekazu Murakawa,et al.  Measurement of Inherent Deformations in Typical Weld Joints Using Inverse Analysis (Part2) Prediction of Welding Distortion of Large Structure , 2005 .

[16]  Brian H. Mason,et al.  Structural Analysis of the Right Rear Lug of American Airlines Flight 587 , 2006 .

[17]  Yu Takeda.  Prediction of butt welding deformation of curved shell plates by inherent strain method , 2002 .

[18]  Yukio Ueda,et al.  New Measuring Method of 3-Dimensional Residual Stresses Based on Theory of Inherent Strain , 1979 .

[19]  Hidekazu Murakawa,et al.  Determination of welding deformation in fillet-welded joint by means of numerical simulation and comparison with experimental measurements , 2007 .

[20]  Pierluigi Mollicone,et al.  Alternative simulation techniques for distortion of thin plate due to fillet-welded stiffeners , 2006 .

[21]  Tetsuya Akiyama,et al.  Study on Longitudinal Shrinkage of Bead-On-Plate. , 2002 .

[22]  Yukio Ueda,et al.  FEM Analysis of 3-D Welding Residual Stresses and Angular Distortion in T-type Fillet Welds(Mechanics, Strength & Structural Design) , 1995 .

[23]  Hisashi Serizawa,et al.  Actual application of FEM to analysis of large scale mechanical problems in welding , 2007 .

[24]  Hisashi Serizawa,et al.  Measurement of Inherent deformations in apical weld joints using inverse analysis. (Part 1): Inherent deformation of bead on welding , 2004 .

[25]  P. Michaleris,et al.  Prediction of buckling distortion of welded structures , 2003 .

[26]  Lars-Erik Lindgren,et al.  FINITE ELEMENT MODELING AND SIMULATION OF WELDING PART 1: INCREASED COMPLEXITY , 2001 .

[27]  Hidekazu Murakawa.  Computational Welding Mechanics and Concept of Inherent Strain for Industrial Applications , 2007 .

[28]  P. Michaleris,et al.  Prediction of welding distortion , 1997 .

[29]  S. C. Park,et al.  Weldin g Distortion of a Thin-Plate Panel Structure , 1999 .

[30]  Lars-Erik Lindgren,et al.  FINITE ELEMENT MODELING AND SIMULATION OF WELDING. PART 3: EFFICIENCY AND INTEGRATION , 2001 .