A steel bar of length L=2 m, with modulus E=200 GPa and constant cross sectional area A=200 mm2 is constrained between two walls at its two ends A and B. A distributed axial load, fx(x)=−p0(1−3x2L), with p0=200 kN/m, is applied to the bar only in the 0≤x≤23L section (no load is applied on right third of the bar).

The last questions:

0.79 mm
0.69 m

Anyone for the beggining questions please?

HW3_4B 0.49

Thanks Anonymous, do you have any of the HW3_3a, b, c, and d?

H_W3_4A 2.66

Thanks Pa!

Anyone for HW3_a, b, c,d?

HW3_2A for 2L/3≤x≤L: (p_0*2*L/27)

For for 2L/3 ≤ x ≤ L:

N(x) = p_0*2*L/27
u(x) = p_0*2*L/(27*E*A)*(x-L)

Anybody for the fist part (0 ≤ x ≤ 2L/3)

for (0 ≤ x ≤ 2L/3)

N(x)=(2*p_0*L)/27-p_0*(L/3-x+(3*x^2)/(4*L))

u(x)=(2*p_0*L*x)/(27*E*A)-p_0/(E*A)*((L*x)/3-x^2/2+x^3/(4*L))

HW3_4B

0.49

The last questions:

0.79 mm
0.7 m