已知矩形截面,AB=2AC=b,长度为l=4b,外力F1=2F2=F,请问A点的应力大小()
已知矩形截面,AB=2AC=b,长度为l=4b,外力F1=2F2=F,请问A点的应力大小()
A.72F/b2
B.-72F/b2
C.36F/b2
D.-36F/b2
正确答案:-72F/b2
Tag:材料力学
时间:2024-01-08 09:59:24