Due to the asymmetrical arrangement of material properties, the loading of beams with composite cross-sections results in effects that cannot be correctly described using conventional theories for the structural assessment of homogeneous structures. One possibility for modeling beams with composite cross-sections under the assumption of ideal bonding is the introduction of so-called imaginary cross-section values. For this purpose, the properties of the individual partial cross-sections are transformed into values that describe the entire beam cross-section. Due to the asymmetry, the reference axis for internal forces and cross-section values is shifted.
Moreover, it is also possible to model the partial cross-sections of a composite beam separately using the one-dimensional finite element method and to create the composite effect by inserting additional connecting elements. Depending on the selected properties of the connecting elements, a limit value analysis is necessary to approximate the ideal composite.
In this thesis, an element formulation is carried out both for the approach of ideal cross-section values and for the separate modeling of partial cross-sections with the knowledge gained. Additionally, the results are implemented in Python to enable their use in the finite element method and the modeling of various beam structures with composite cross-sections.
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Due to the asymmetrical arrangement of material properties, the loading of beams with composite cross-sections results in effects that cannot be correctly described using conventional theories for the structural assessment of homogeneous structures. One possibility for modeling beams with composite cross-sections under the assumption of ideal bonding is the introduction of so-called imaginary cross-section values. For this purpose, the properties of the individual partial cross-sections are tran...
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