31st Structures, Structural Dynamics and Materials Conference · 1990 · 46 citations · 11 references
EngineeringMaterials EngineeringMaterials ScienceFinite Element AnalysisStructural AnalysisStructural EngineeringBending Of BeamsComposite Structure AnalysisElasticity TheoryMechanics Of Composite MaterialsStructural MechanicsStructural Response AnalysisBeam Finite Element AnalysisComposite Beam AnalysisComposite Beam BendingComposite Beam TheoryComposite Stiffness AnalysisDeformation BehaviorElasticity Of BeamsPly Orientation
A direct method for determining the effective elastic stiffnesses and deformation behavior of composite box-beam (BB) structures is developed analytically, validated, and demonstrated. The BB walls are modeled as orthotropic-ply laminated plates, so that the elastic properties vary both through the thickness and around the BB contour; deformation is described in terms of extension, bending, twisting, shearing, and torsion-related out-of-plane warping. Numerical results for several BB configurations are presented in tables and graphs and compared with experimental data and FEM computations (Stemple and Lee, 1989): good general agreement is obtained for cross-ply, antisymmetric, and symmetric layups, except for symmetric layups with ply orientation angles theta greater than 30 deg. Both out-of-plane warping and transverse shear coupling are found to have significant effects on BB elastic response.
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Anisotropic beam theory and applications
Vittorio Giavotto, M. Borri, Paolo Mantegazza et al. · Computers & Structures · 1983 · 445 citations