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Finite Element Modeling Of Residual Stress Formation In Polycarbonate Welds
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Book Synopsis Finite Element Modeling of Residual Stress Formation in Polycarbonate Welds by : Kittichai Sojiphan
Download or read book Finite Element Modeling of Residual Stress Formation in Polycarbonate Welds written by Kittichai Sojiphan and published by . This book was released on 2008 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Formation of residual stresses during hot plate welding and other plastic welding processes can have detrimental effects on the joint quality under static and dynamic loading as well as reduce the corrosion resistance of the joints. Therefore, it is important to measure and predict residual stress level to prevent premature failures. Uncoupled finite element thermal analysis and viscoelastic stress-strain analysis were used to calculate the temperature distribution and history in the parts and thermal and residual stress formation during welding. Thermal properties and viscoelastic relaxation modulus of polycarbonate were compiled from the literature to build the material model for the finite element simulation. Residual stress levels in hot plate polycarbonate welds were computed for different hot plate temperatures and heating times. It was found that shorter heating times resulted in faster cooling rates and higher residual stress. The model was also used to calculate residual stresses in through transmission infrared and vibration welding of polycarbonate. The predicted residual stress levels and distributions were in good agreement with published experimental results for hot plate and through transmission infrared welding. Thus, finite element modeling is an effective way for predicting residual stress for a wide range of plastic welding method.
Book Synopsis Theoretical and Experimental Analysis of Residual Stress Formation After Implant Resistance Welding of Polycarbonate by : Joon Boo Park
Download or read book Theoretical and Experimental Analysis of Residual Stress Formation After Implant Resistance Welding of Polycarbonate written by Joon Boo Park and published by . This book was released on 1992 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Formation of residual stress during thermoplastic welding causes detrimental effects to the joint quality under both dynamic and static loading conditions. Residual stress can reduce the solvent resistance of polymers as well as the tensile strength and fatigue life of the joint. Therefore, it is vital to predict and measure the level of residual stresses. Here, the formation of thermal and residual stresses during implant resistance welding of polycarbonate was studied. Thermocouples and an infrared temperature sensor were used to measure the temperature history and temperature distribution in the parts during welding. Heat flow analysis during implant resistance welding was done using Finite Element Method (FEM) and Finite Difference Method (FDM) which are connected with FEM and a simplified modeling analysis so-called "multi-bar analogy" respectively for stress analysis. FEM and FDM predictions of heat flow analysis were in good agreement with experimental measurements. The formation of thermal and residual stress was predicted using 2-D finite element analysis and multi-bar analogy in conjunction with non-isothermal linear viscoelasticity for a thermorheologically simple material. The residual stresses in the parts were measured using both photoelasticity and moire interferometry. Sectioning method utilizing moire interferometry was used to measure residual stress. FEM prediction of residual stress was in good agreement with photoelasticity measurement and moire interferometry measurement. Residual stress formation in the weld was predicted by multi-bar analogy modeling analysis and multi-bar analogy prediction was in good agreement with FEM prediction. Heat treatment to reduce residual stress after welding was performed. Residual stress distribution after heat treatment was predicted using FEM. The FEM prediction was in good agreement with photoelasticity measurement and moire interferometry measurement. This methodology for prediction, measurement and reduction of residual stress can be incorporated into the design, analysis, and welding procedures for plastic and composite joints. This will result in stronger and more reliable welds.
Book Synopsis Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening by : Gkatzogiannis, Stefanos
Download or read book Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening written by Gkatzogiannis, Stefanos and published by KIT Scientific Publishing. This book was released on 2022-06-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research goal of the present monograph is the establishment of an efficient engineering approach, which will include straightforward but accurate simulation models, in order to estimate the residual stress fields of welded joints introduced during welding and their post-weld treatment with High Frequency Hammer Peening. The present subject lies on the intersection of structural engineering, material science and computational mechanics.
Book Synopsis A Finite Element Model for Residual Stress in Repair Welds by :
Download or read book A Finite Element Model for Residual Stress in Repair Welds written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening by : Stefanos Gkatzogiannis
Download or read book Finite Element Simulation of Residual Stresses from Welding and High Frequency Hammer Peening written by Stefanos Gkatzogiannis and published by . This book was released on 2020* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Modeling of Residual Stress and Distortion from Welding Stainless Steel Structures by : Herman F. Nied
Download or read book Finite Element Modeling of Residual Stress and Distortion from Welding Stainless Steel Structures written by Herman F. Nied and published by . This book was released on 2004 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Modeling of Residual Stresses in Pipe Girth Welds by : Yi Dong
Download or read book Finite Element Modeling of Residual Stresses in Pipe Girth Welds written by Yi Dong and published by . This book was released on 1996 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Finite Element Analysis of Welding Distortions and Residual Stresses in Large and Complex Structures by : Jun Sun
Download or read book Modeling and Finite Element Analysis of Welding Distortions and Residual Stresses in Large and Complex Structures written by Jun Sun and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Modeling and Validation of Residual Stresses in 304 L Girth Welds by :
Download or read book Finite Element Modeling and Validation of Residual Stresses in 304 L Girth Welds written by and published by . This book was released on 1998 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three dimensional finite element simulations of thermal and mechanical response of a 304 L stainless steel pipe subjected to a circumferential autogenous gas tungsten arc weld were used to predict residual stresses in the pipe. Energy is input into the thermal model using a volumetric heat source. Temperature histories from the thermal analysis are used as loads in the mechanical analyses. In the mechanical analyses, a state variable constitutive model was used to describe the material behavior. The model accounts for strain rate, temperature, and load path histories. The predicted stresses are compared with x-ray diffraction determinations of residual stress in the hoop and circumferential directions on the outside surface of the pipe. Calculated stress profiles fell within the measured data. Reasons for observed scatter in measured stresses are discussed.
Book Synopsis Finite Element Modeling and Validation of Residual Stresses in 304L Girth Welds by :
Download or read book Finite Element Modeling and Validation of Residual Stresses in 304L Girth Welds written by and published by . This book was released on 1998 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three dimensional finite element simulations of thermal and mechanical response of a 304L stainless steel pipe subjected to a circumferential autogenous gas tungsten arc weld were used to predict residual stresses in the pipe. Energy is input into the thermal model using a volumetric heat source. Temperature histories from the thermal analysis are used as loads in the mechanical analyses. In the mechanical analyses, a state variable constitutive model was used to describe the material behavior. The model accounts for strain rate, temperature, and load path histories. The predicted stresses are compared with X-ray diffraction determinations of residual stress in the hoop and axial directions on the outside surface of the pipe. Calculated stress profiles fell within the measured data. Reasons for the observed scatter in the measured stresses are discussed.
Book Synopsis Thermo-elasto-plastic Finite Element Formulation for Deformation and Residual Stresses Due to Welds by : Balvantrai Govindji Patel
Download or read book Thermo-elasto-plastic Finite Element Formulation for Deformation and Residual Stresses Due to Welds written by Balvantrai Govindji Patel and published by . This book was released on 1985 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Second International Conference on Photomechanics and Speckle Metrology by : Fu-Pen Chiang
Download or read book Second International Conference on Photomechanics and Speckle Metrology written by Fu-Pen Chiang and published by . This book was released on 1991 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Finite Element Modelling of Multipass Welds by :
Download or read book Study of Finite Element Modelling of Multipass Welds written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The initial objective was to develop a finite element model to predict weldresidual stress, with special emphasis on multipass weldments. Asubsequent objective was to investigate how weld passes interact in a multi-pass weld. A simplified but reliable analysis procedure for theprediction of the final residual stress state in a multi-pass weld wassought The use of a commercial finite element package called ABAQUS [1.1]was examined. The package was modified to meet the needs of the study.
Book Synopsis Developing Material Models for Use in Finite Element Predictions of Residual Stresses in Ferritic Steel Welds by : Nicholas O'Meara
Download or read book Developing Material Models for Use in Finite Element Predictions of Residual Stresses in Ferritic Steel Welds written by Nicholas O'Meara and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An effective finite element procedure for residual stress predictions in multi-pass welds, EWI MR9509 by : C. Tsai
Download or read book An effective finite element procedure for residual stress predictions in multi-pass welds, EWI MR9509 written by C. Tsai and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Analysis of Residual Stresses in 2Cr-Mo Repair Welds Including Transformation Plasticity by : Alan Sinclair Oddy
Download or read book Finite Element Analysis of Residual Stresses in 2Cr-Mo Repair Welds Including Transformation Plasticity written by Alan Sinclair Oddy and published by . This book was released on 1989 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
