Q235钢的=200MPa,=235MPa,=450MPa,弹性模量E=2X105MPa。在单向拉伸时,若测得拉伸方向的线应变=2000X10-6,此时杆横截面上正应力约为:
A.200MPa B.235MPa C.400MPa D.450MPa正确答案B
Q235钢的=200MPa,=235MPa,=450MPa,弹性模量E=2X105MPa。在单向拉伸时,若测得拉伸方向的线应变=2000X10-6,此时杆横截面上正应力约为:
A.200MPa B.235MPa C.400MPa D.450MPa正确答案B