Find the deflections and von mises stress

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Reference no: EM133126007

Problem: For the wing-box, which is modeled as a closed thin-walled beam as shown in Figure 1, find the deflections and von Mises stress in the stringers as well as in the skins using MSC.

Patran and MSC.Nastran. The stringers are denoted by thick lines and have an area, A = 4 cm² and the skin has a thickness, t = 0.3 cm. The material properties for this wing-box are E = 68.9 GPa, G = 26 GPa, v = 0.33 and yield strength = 276 MPa. The applied load, P = 2500 N.

Model stringers as bar elements and skin as triangular shell elements. The span of the wing box is 500 cm, and there is one rib located at the mid-span, which has a thickness of 0.4 cm. The wing box is symmetric about the horizontal axis and fixed at one end.

Patran geometry and 3D displacements, and von Mises stress should be shown in the final report. Determine whether von Mises stress exceeds yield strength anywhere in the wing.

2358_Wing as a thin-walled beam.jpg

Figure 1: Wing as a thin-walled beam

Reference no: EM133126007

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