EduPanda - Rdzeń przekroju

Geometrical characteristics

𝐼 𝑦 = 12 \cdot 303 12 = 27000 𝑐 𝑚 4 𝐼 𝑧 = 30 \cdot 123 12 = 4320 𝑐 𝑚 4 𝐴 = 12 \cdot 30 = 360 𝑐 𝑚 2 𝑖 2 𝑦 = 𝐼 𝑦 𝐴 = 27000360 = 75 𝑐 𝑚 2 𝑖 2 𝑧 = 𝐼 𝑧 𝐴 = 4320360 = 12 𝑐 𝑚 2

Neutral axis AB

𝑎 𝑦 = 6 𝑐 𝑚 𝑎 𝑧 = \infty 𝑦 = - 𝑖 2 𝑧 𝑎 𝑦 = - 126 = - 2 𝑐 𝑚 𝑧 = - 𝑖 2 𝑦 𝑎 𝑧 = - 75 \infty = 0 𝑐 𝑚

Neutral axis BC

𝑎 𝑦 = \infty 𝑎 𝑧 = - 15 𝑐 𝑚 𝑦 = - 𝑖 2 𝑧 𝑎 𝑦 = - 12 \infty = 0 𝑐 𝑚 𝑧 = - 𝑖 2 𝑦 𝑎 𝑧 = - 75 - 15 = 5 𝑐 𝑚

Neutral axis CD

𝑎 𝑦 = - 6 𝑐 𝑚 𝑎 𝑧 = \infty 𝑦 = - 𝑖 2 𝑧 𝑎 𝑦 = - 12 - 6 = 2 𝑐 𝑚 𝑧 = - 𝑖 2 𝑦 𝑎 𝑧 = - 75 \infty = 0 𝑐 𝑚

Neutral axis DA

𝑎 𝑦 = \infty 𝑎 𝑧 = 15 𝑐 𝑚 𝑦 = - 𝑖 2 𝑧 𝑎 𝑦 = - 12 \infty = 0 𝑐 𝑚 𝑧 = - 𝑖 2 𝑦 𝑎 𝑧 = - 7515 = - 5 𝑐 𝑚

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