کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7221339 1470345 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and numerical investigations of welding distortion induced by CO2 gas arc welding in thin-plate bead-on joints
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental and numerical investigations of welding distortion induced by CO2 gas arc welding in thin-plate bead-on joints
چکیده انگلیسی
Thin plates are widely used in aerospace, naval, and automobile industries to reduce the weight of component. Welding distortion occurring in thin plate joint or structure is inevitable and often results in loss of dimensional control, structural integrity and manufacturing costs increase due to additional straightening work. In the present study, a computational approach based on finite element method with considering both materials nonlinearity and geometrical nonlinearity was developed to investigate welding distortion and residual stress in low carbon steel thin-plate bead-on joints induced by arc welding process. Besides temperature-dependent thermal physical and mechanical properties and moving heat source model, the weld reinforcement shape was also considered in the finite element model. Meanwhile, experiments were carried out to verify the numerical results. In the experiments, an arc welding robot was used to perform the bead-on welding. The comparison between simulation results and measurements suggests that the developed finite element model can capture the features of welding distortion and residual stress distribution in thin plate welded joints. Moreover, the influences of heat input on buckling propensity were examined numerically. In addition, the mechanisms of out-of-plane deformation formation in the thin-plate bead-on joints were discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design (1980-2015) - Volume 52, December 2013, Pages 720-729
نویسندگان
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