mechanics of aircraft structure

# mechanics of aircraft structure - Problem Solution...

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구조역하및 실험 Problem Solution Homework #4 4.1 Solution : Vertical distances between the centroid and the origin Moments of Inertia Assume 𝑡 ≪ h where Stress

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Maximum positive stress Maximum negative stress Hence, the absolute maximum stress is Neutral axis is located along σ xx = 0 4.2 Solution : Rotation Assume 𝑡 ≪ h Moment of Inertia
Stress Maximum positive stress Maximum negative stress Absolute maximum stress Neutral axis is located along σ xx = 0 Neutral axis coincides with the centroidal axis. Load capacity compared to the original section for the same maximum bending stress

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4.3 Solution : a) Figure 4.20 Since it is symmetrical, the centroid is located at the middle of the vertical web. Moment of inertia Bending Stress: M y 0 , M z = 0 b) Figure 4.21 Since it is symmetrical (when neglecting the effects of webs), the sentroid is located at the center of the sections. Moment of Inertia
Bending Stress: M y 0 , M z = 0 c) Figure 4.22 The centroid is located at the middle of the vertical web.

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