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The radial deflection of the shell is expanded by using a basis of seven linear modes.
A particular problem of minimization of the mean deflection of the shell with cracks at the cross sections where stiffeners are located is treated in a greater detail.
The hoop displacement and deflection of the shell are approximated by the beam function corresponding to the first mode shape of vibration of a clamped-clamped beam.
Similar(57)
Upward deflection of the ice shell creates positive topography, but surface weathering keeps that topography small.
The new model examines the change of the circumferential radius due to the radial deflection of the cylindrical sandwich shell and its effect on the bending moments.
Figure 4a depicts the decrease of central deflection with increased number of stiffener for cylindrical panel and shows that the deflection of cylindrical shell panel with orthogonal stiffeners is the smallest (i.e., the stiffest).
For static analysis, when the stiffener's height-to-width ratio increases, the deflection of shell panel with orthogonal stiffeners (both cylindrical shell panel and spherical shell panel) is the smallest (stiffest).
As shown in Fig. 5, we see that the fundamental frequency of both stiffened cylindrical shell panel and spherical shell panel has a same trend of decrease to the minimum and then increase up, while the deflection of stiffened shell panels decreases, as shown in Fig. 6.
However, the deflection of both cylindrical shell panel and spherical shell panel with orthogonal stiffeners is the smallest (the stiffest), see Fig. 6.
In particular case, for stiffened spherical shell panel, at the beginning, the deflection of shell increases up and then decreases down.
The deflection displacements of the transformed shell are expressed in a series of the products of the eigenfunctions of an axial beam and a circumferentially cranked beam.
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