Viscoelastic multi-mode simulations of wire-coating
نویسندگان
چکیده
منابع مشابه
Viscoelastic Multi-mode Simulations of Wire-coating
A time-stepping nite element method is used to predict the viscoelastic stresses that arise in a tube-tooling wire-coating problem. The polymer melt HDPE is modelled by a multi-mode Phan-Thien/Tanner constitutive equation. Di erent ow geometries are considered to address optimisation of the process with respect to minimising the stress induced within the coating produced. The in uence of the di...
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Wire-coating flow is simulated, involving polymer melt coatings and tube-tooling process design. A finite element method is employed, based on a semi-implicit time-stepping Taylor-Galerkin/pressure-correction scheme. The exponential Phan-Thien/Tanner model is used in its multi-mode form to represent a high-density polyethelyne (HDPE) polymer. Both shear-thinning and elongation-softening propert...
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This study considers both a single and multi-mode viscoelastic analysis for wirecoating ows. The numerical simulations utilise a nite element time-stepping technique, a Taylor-Petrov-Galerkin/pressure-correction scheme employing both coupled and decoupled procedures between stress and kinematic elds. An exponential Phan-Thien/Tanner model is used to predict pressure-drop and residual stress for...
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The objective of this study was to evaluate the time-dependent viscoelastic properties of an aesthetic orthodontic archwire. The wire is based on a recently developed translucent polyphenylene thermoplastic, whose rigid molecular structure provides high strength. While the wire has good instantaneous mechanical properties, over time all polymers may relax so it is important to understand the po...
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ژورنال
عنوان ژورنال: Journal of Non-Newtonian Fluid Mechanics
سال: 2000
ISSN: 0377-0257
DOI: 10.1016/s0377-0257(99)00079-8