I y1 = z12 dA = ( z + b )2 dA = z 2 dA + 2b zdA + b 2 dA = I y + 2bS y + b 2 A A A A A A ; I z1 = I z + 2aS z + a A 2 · kujundi tsentrifugaal-inertsimoment y1z1-teljestikus tuleb: I y1z1 = y1 z1dA = ( y + a )(z + b )dA = yzdA + b ydA + a zdA + ab dA = A A A A A A = I yz + bS z + aS y + abA I y1 = I y + b 2 A S y = 0
I y1 = z12 dA = ( z + b )2 dA = z 2 dA + 2b zdA + b 2 dA = I y + 2bS y + b 2 A A A A A A ; I z1 = I z + 2aS z + a A 2 · kujundi tsentrifugaal-inertsimoment y1z1-teljestikus tuleb: I y1z1 = y1 z1dA = ( y + a )(z + b )dA = yzdA + b ydA + a zdA + ab dA = A A A A A A = I yz + bS z + aS y + abA I y1 = I y + b 2 A S y = 0
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