NIST Special PublicationThe Institute, 2002 |
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Results 6-10 of 56
Page 184
... element method or finite boundary method is employed . A new integral form of the heat equation is induced for achieving a real time treatment . The new concept calculates the energy balance in a weld part to simplify the relationships ...
... element method or finite boundary method is employed . A new integral form of the heat equation is induced for achieving a real time treatment . The new concept calculates the energy balance in a weld part to simplify the relationships ...
Page 206
... elements . There were 19,820 elements and 25813 nodes in the weld product model . The size of elements within and near the welds was very fine so that welding induced thermal and mechanical features can be captured . In contrast , the ...
... elements . There were 19,820 elements and 25813 nodes in the weld product model . The size of elements within and near the welds was very fine so that welding induced thermal and mechanical features can be captured . In contrast , the ...
Page 211
... element shell elements are used to model deformation of the plate structures . The Belytschko- Tsay large displacement , geometrically non - linear shell element is employed . A selection of sophisticated plasticity models that ...
... element shell elements are used to model deformation of the plate structures . The Belytschko- Tsay large displacement , geometrically non - linear shell element is employed . A selection of sophisticated plasticity models that ...
Page 212
... elements . They follow the formulation of Flanagan and Belytschko [ 5 ] . Both element types have a long history of successful application in such codes as LS DYNA [ 2,3 ] . The thermal solution is performed concurrently with the ...
... elements . They follow the formulation of Flanagan and Belytschko [ 5 ] . Both element types have a long history of successful application in such codes as LS DYNA [ 2,3 ] . The thermal solution is performed concurrently with the ...
Page 213
... element . A one - dimensional transient heat conduction solution is performed through the thickness of the element . This allows for full through - thickness effects to be included . This is important in weld zones . The heat energy ...
... element . A one - dimensional transient heat conduction solution is performed through the thickness of the element . This allows for full through - thickness effects to be included . This is important in weld zones . The heat energy ...
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algorithm analysis angular distortion arc length arc voltage average current boundary butt weldment calculated camera detachment during peak developed droplet detachment dynamic effect electrode equation experimental Figure filler metal Friction Stir Welding geometry GMAW GMAW-P GTA weld GTAW hoop stress increase interface keyhole laser machine vision martensite material measured mechanical melting metal arc welding method microstructure mm/min mode molten pool monitoring NIST oscillation frequency peak duration penetration plasma arc welding plate predicted procedure pulsed current resetting residual stress robot rotational sensor shear stress shielding gas shown in Fig splash strain structure surface technique Technology temperature distribution thermal types of droplet variation VPPAW waveform weld diameter weld fixture weld joint weld pool weld quality welding current Welding Journal welding parameters welding power supply welding process welding simulation welding speed welding voltage width wire feed speed workpiece zone
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Page ii - Certain commercial equipment, instruments, or materials are identified in this paper in order to adequately specify the experimental procedure. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
Page 96 - Proceedings of the institution of Mechanical Engineers; Part B: Journal of Engineering Manufacture, Vol. 207, pp.9- 1 4, 1 993 [4] Soar RC and Dickens, PM, "Design of Laminated Tooling for High Pressure Die -Casting," Proceedings-SPIE The international society for Optical Engineering, pp.
Page 125 - Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy.