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题目
题目

STRCTENG 303 Quiz No 5

多项选择题

Which of these expressions is correct regarding the relative sizes of cracked, gross and effective second moment of inertia?

选项
A.Ig ≤ Icr ≤ Ie
B.Icr ≤ Ie ≤ Ig
C.Ie ≤ Ig ≤ Icr
D.Ie ≤ Icr ≤ Ig
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标准答案
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思路分析
Question restatement: Determine the correct ordering of the relative sizes of cracked (Icr), gross (Ig), and effective (Ie) second moments of inertia. Option 1: Ig ≤ Icr ≤ Ie - This implies Ig is the smallest, followed by Icr, then Ie as the largest. This contradicts the typical behavior in cracked-beam theory, where the presence of a crack reduces stiffness and thus Icr......Login to view full explanation

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