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正方形截面受压杆,若截面的边长由2a减小到a后(其他条件不变),则杆的横截面上的压应力是原来压应力的( )。
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正方形截面受压杆,若截面的边长由2a减小到a后(其他条件不变),则杆的横截面上的压应力是原来压应力的( )。
A、2倍
B、4倍
C、8倍
D、16倍
时间:2021-09-01 23:49
关键词:
青书学堂
西南石油大学
工程力学(高起专)
答案解析
B
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正方形截面受压杆,若截面的边长由2a减小到a后(其他条件不变),则杆的横截面上的压应力是原来压应力的( )。
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