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A refined model for thermoelastic analysis of initially curved and twisted composite beams
Highlights ► Generalized Timoshenko theory for accurate thermal stress prediction. ► Achieved accuracy comparable to 3D FEA for thermal fields and stress/strain fields. ► No ad hoc assumptions which are common in other approaches are invoked in the derivation. ► Effects of initial curvatures/twists are accurately modeled. ► Implemented in VABS for general-purpose thermoelastic modeling for composite beams.
Abstract This paper deals with steady state thermoelastic problems in beam structures using the variational asymptotic method. First, we simplify the original three-dimensional heat conduction problem into a two-dimensional thermal cross-sectional analysis along with an optional one-dimensional heat conduction analysis. The refinements up to the second order of the initial curvatures and twist are captured in the model. Having obtained the temperature field, we then construct a generalized Timoshenko model for the one-way coupled thermoelastic analysis. Several examples will be used to demonstrate the application and performance of the present model. The results will be compared with three-dimensional thermoelastic analysis using ANSYS.
A refined model for thermoelastic analysis of initially curved and twisted composite beams
Highlights ► Generalized Timoshenko theory for accurate thermal stress prediction. ► Achieved accuracy comparable to 3D FEA for thermal fields and stress/strain fields. ► No ad hoc assumptions which are common in other approaches are invoked in the derivation. ► Effects of initial curvatures/twists are accurately modeled. ► Implemented in VABS for general-purpose thermoelastic modeling for composite beams.
Abstract This paper deals with steady state thermoelastic problems in beam structures using the variational asymptotic method. First, we simplify the original three-dimensional heat conduction problem into a two-dimensional thermal cross-sectional analysis along with an optional one-dimensional heat conduction analysis. The refinements up to the second order of the initial curvatures and twist are captured in the model. Having obtained the temperature field, we then construct a generalized Timoshenko model for the one-way coupled thermoelastic analysis. Several examples will be used to demonstrate the application and performance of the present model. The results will be compared with three-dimensional thermoelastic analysis using ANSYS.
A refined model for thermoelastic analysis of initially curved and twisted composite beams
Wang, Qi (Autor:in) / Yu, Wenbin (Autor:in)
Engineering Structures ; 48 ; 233-244
06.09.2012
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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