还是英文,不给点悬赏分啊.
a)Sy=98000/(200*10^-6)=490Mpa
b)E=FL/(elongation)*A=106.5Gpa
c)assuming volume does not change,implies 50*200=64.2*A,A=155.76mm^2,
Sut=F/A=168000/(155.76*10^-6)=1.08Gpa
还是英文,不给点悬赏分啊.
a)Sy=98000/(200*10^-6)=490Mpa
b)E=FL/(elongation)*A=106.5Gpa
c)assuming volume does not change,implies 50*200=64.2*A,A=155.76mm^2,
Sut=F/A=168000/(155.76*10^-6)=1.08Gpa