کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
267258 | 504398 | 2013 | 12 صفحه PDF | دانلود رایگان |
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.
► 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.
Journal: Engineering Structures - Volume 48, March 2013, Pages 233–244