Which theoretical framework can be utilized for Sandwich analysis?
All analysis methods for plane surface structures within the framework of the First-Order Shear Deformation Theory are applicable.
Paying respect to shear deformation is important because structure relativly thick. Further important because the only analyzed task of the core
Shear field beam in german?
Schubfeldträger
What is the motivation behind using Shear Field beam models?
What is the implied limit of Shear Field beam models?
Shear field beam models allow for a fast and most of the time closed form analytic analysis of potentially complex poroblems.
Thereby they reveal driving parameters and allow for a fast assesment in pre-design.
Due to the abstraction of the structure into a shear field beam model, they are only to be used for pre-design, not for final design!
What are areas of application for shear field beam models?
Aircraft fusulage can be abstracted to a shear field beam for certain load cases.
Intersections of beams —> Frame corners can be modeld with a shear field
What are the basic elements of shear field beams?
How are they loaded?
Skin fields: Plane shear (can idealized as disc)
Stiffeners: Tension/ compression (idealized as bar)
—> Continuously connected with ideal joints
Describe the shear flow on the skin field edges and the according load on the stiffeners.
Constant shear flow for all edges —> Linearly rising/ falling normal force in bars
How did the size of the shear flow behave for the sking fields presented in the examples?
In the simple shear field, Transverse force and moment equilibrium revealed that the shear flow T is the same size around the skin.
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