一些力學問題 - 土木

By Michael
at 2013-06-24T22:04
at 2013-06-24T22:04
Table of Contents
1. http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264220&p=118 (題目)
http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264225&p=123 (我的解法)
這題δmax 我哪邊算錯呢?跟答案不一樣
2. http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264221&p=119 (題目)
http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264222&p=120
這題力矩方向為什麼跟我畫的相反呢?(紅筆部分)
然後中性軸為什麼會在中心線下方而非上方呢?
yn的定義是從中心線開始起算嗎?
謝謝
--
http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264225&p=123 (我的解法)
這題δmax 我哪邊算錯呢?跟答案不一樣
2. http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264221&p=119 (題目)
http://www.wretch.cc/album/show.php?i=abc13544&b=1&f=1464264222&p=120
這題力矩方向為什麼跟我畫的相反呢?(紅筆部分)
然後中性軸為什麼會在中心線下方而非上方呢?
yn的定義是從中心線開始起算嗎?
謝謝
--
Tags:
土木
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