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Shear Flow in a Single and Multi-Cell Section
There are different scenarios that can be analyzed to obtain a better understanding of shear flow in sections. The scenarios are divided into Single-Cell sections and Multi-Cell sections. In a Single-Cell section, two more scenarios can be analyzed. One without stringers and another with stringers. This can also be done for Multi-Cell sections.

The following plan was used to abbreviate and guide the analysis of shear flow through each different scenario:

S) Single-Cell sections S1) Single-Cell section without stringers (most basic analysis) S2) Single-Cell section with stringers

M) Multi-Cell sections

M1) Multi-Cell section without stringers M2) Multi-Cell section with stringers

To analyze S1, the cell is looked at as a thin-walled cross-section. The shear flow through the section must be found.

To analyze the shear flow in S2, the problem is divided into two parts using the superposition principal. The first part is to obtain the shear flow in a cell without stringers. The second part is to analyze a cell with stringers and applying a cut in one of its shear paths. The shear flows from each part is then added together to obtain the shear flow in S2.

The shear flow within each section, between stringers, are not equal to each other but are constant.

Therefore shear flow of S2 is also constant.

To conclude the analysis, solve for the shear flow in the second part and take the moment about a point selected on the plane of the section.