2013
DOI: 10.1177/0892705713486135
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Dynamic finite element simulation and transient temperature field analysis in thermoplastic composite tape lay-up process

Abstract: In the lay-up process of thermoplastic composite tape, the thermal conditions have great influence on the end quality and performance of composites. In the lay-up process of thermoplastic matrix composites, a semi-infinite solid model is used to analyse the heat transfer by simulating the heating of hot gas torch. Temperature of the control volume is calculated based on the model. A dynamic finite element model is developed to obtain the transient temperature field. The birth-death element strategy in ANSYS wa… Show more

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Cited by 20 publications
(14 citation statements)
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“…In case of transient dynamics, the governing equation of a multi-degree of freedom system can be cast in a nodal matrix form as in Equation (6):[M]{u¨(t)}+[C]{trueu˙(t)}+[K]{u(t)}={bold-italicf(t)} where M , C , and K are the mass, damping and stiffness matrices of the dynamic system, family of u ( t ) represents the displacement, velocity and acceleration of the nodes of the system with respect to time, t , and f ( t ) are the nodal equivalent forces in a cartesian coordinate system. The transient solution is obtained by using the time marching scheme derived by the Newmark integration for displacement and velocity, coupled with the damping matrix, C identified through the Hilber, Hughes and Taylor’s implicit operator [44,45].…”
Section: Numerical Simulationmentioning
confidence: 99%
“…In case of transient dynamics, the governing equation of a multi-degree of freedom system can be cast in a nodal matrix form as in Equation (6):[M]{u¨(t)}+[C]{trueu˙(t)}+[K]{u(t)}={bold-italicf(t)} where M , C , and K are the mass, damping and stiffness matrices of the dynamic system, family of u ( t ) represents the displacement, velocity and acceleration of the nodes of the system with respect to time, t , and f ( t ) are the nodal equivalent forces in a cartesian coordinate system. The transient solution is obtained by using the time marching scheme derived by the Newmark integration for displacement and velocity, coupled with the damping matrix, C identified through the Hilber, Hughes and Taylor’s implicit operator [44,45].…”
Section: Numerical Simulationmentioning
confidence: 99%
“…30 The aromatic polymer composite (APC-2) is the very common trade name used by Cytec for CF/PEEK tapes. APC-2/AS4 was used extensively, 18,24,27,30,35,44 47,56,60 –67,70,75,77 79,82,83,85,91 123 whereas other APC-2 versions were less investigated, such as APC-2/IM6 124,125 and APC-2/lM7. 72,73 Many of these tapes/tows had a narrow width of 6.35 mm (0.25 in).…”
Section: Materials Systemmentioning
confidence: 99%
“…12 Hot gas heating can be very effective in achieving high temperatures; however, due to its convective heat transfer mechanism—considered to have a long dynamic response time—these systems are characterized by wasting a lot of energy which lowers their heating efficiency and reduces the process control response in a way that achieving the required full production rates becomes challenging. 12,10,13,26,32,128 In terms of hot gas torch systems, air, as a gas, was used in few studies 82,136,143 ; however, the vast majority of the studies were based on nitrogen gas in which the setups were either having a single torch 27,36 38,44,54 56,60,63,64,67,70,79,81,83,85,105,110,119,146,147 or two torches. 25,30,31,33,43,57 –59,69,138,148 The NASA LaRc heated head automated thermoplastic tape placement (HHATP) includes four methylacetylene propadiene (MAPP) gas combustion torches (preheaters) and a mini gas torch to rapidly heat both tape surfaces at the contact point to the process temperature.…”
Section: Heat Sourcesmentioning
confidence: 99%
See 1 more Smart Citation
“…The ATW technique is highly automated and used to manufacture tubular-like structures such as flywheel rotors [21,38], tanks for energy storage, pipes for oil and gas industry [29,44], tubes for bikes, etc. The heating source can be a hot gas torch [12,13,22], infrared lamp [4,16,18], near-infrared (NIR) diode lasers [5,10,11,31], and recently LED heating [25]. The parts are built up layer by layer onto a rotating mandrel in the ATW processes.…”
Section: Introductionmentioning
confidence: 99%