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Diffstat (limited to '3776/CH6/EX6.8/Ex6_8.sce')
| -rw-r--r-- | 3776/CH6/EX6.8/Ex6_8.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/3776/CH6/EX6.8/Ex6_8.sce b/3776/CH6/EX6.8/Ex6_8.sce new file mode 100644 index 000000000..244deb69e --- /dev/null +++ b/3776/CH6/EX6.8/Ex6_8.sce @@ -0,0 +1,28 @@ +clear +//Given +//Given +//We will divide this into two parts +E_w = 10.0 //Gpa - Youngs modulus of wood +E_s = 200.0 //Gpa - Youngs modulus of steel +M = 30.0 //K.N-m _ applied bending moment +n = E_s/E_w +l_1 = 250 //mm +l_2 = 10 //mm +b_1 = 150.0 //mm +b_2 = 150.0*n //mm +A_1 = l_1* b_1 //mm2 - area of part_1 +y_1 = 125.0 //mm com distance from top +A_2 =l_2*b_2 //mm2 - area of part_1 +y_2 = 255.0 //mm com distance from top +y_net = (A_1*y_1 +A_2*y_2)/(A_1+A_2) //mm - The com of the whole system from top +I_1 = b_1*(l_1**3)/12.0 + A_1*((y_1-y_net)**2) //Parallel axis theorm +I_2 = b_2*(l_2**3)/12.0 + A_2*((y_2-y_net)**2) +I_net = I_1 + I_2 //mm4 - the total moment of inertia +c_s= y_net // The maximum distance in steel +stress_steel = M*(10.0**6)*c_s/I_net //MPa - The maximum stress in steel + +c_w= l_1+l_2-y_net // The maximum distance in wood +stress_wood = n*M*(10.0**6)*c_w/I_net //MPa - The maximum stress in wood + +printf("\n The maximum stress in steel %0.2f MPa",stress_steel) +printf("\n The maximum stress in wood %0.2f MPa",stress_wood) |