# PHYSIC

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The built-in composite bar BC of length L=2 m is composed of two materials with equal cross sectional area A = 100 mm2. The first material has elastic modulus E=1 GPa. The second material is twice as stiff, with a modulus of 2E or 2 GPa. The bar is subjected to an unknown distributed load fx(x), and to an unknown concentrated load F at an unknown position along the bar. As a result of these loading conditions, the displacement field of the bar is:

ux(x)={−aLx,2a(x2−Lx),if 0≤x<L/2if L/2<x≤L
where a= 0.01 [1/m] is a dimensional constant.

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u1 = -a*L*x1;

u2 = 2*a*(x2.^2-L*x2);

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N1 = -3*a*L*A*E+0*x1;

N2 = 6*a*A*E*(2*x2-L);

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fx1 = 0 + 0*x1;

fx2 = -12*a*A*E + 0*x2;

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Fx = -3*a*L*A*E
x = L/2

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Rx(B) = 3*a*A*E*L
Rx(C) = 6*a*A*E*L

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Thanks Access!
Do you have HW3_2A and 2B?

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thanks a lot access!

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HW3_2A
N(x)= (2*p_0*L)/27-p_0*(L/3-x+(3*x^2)/(4*L))

N(x)=(2*p_0*L)/27

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HW3_2B
0<x<(2/3)L
(2*p_0*L*x)/(27*E*A)-p_0/(E*A)*((L*x)/3-x^2/2+x^3/(4*L))

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Many thanks Pa!

• PHYSIC - ,

THanks!
The second for HW3_2B please?

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