Blog

If the length of a timber [E = 1,200 ksi] column cannot change by more than 0.050 in., determine the maximum load P that can be applied to the column. Let b = 5.50 in., d = 10.00 in., and L = 104 in.

If the length of a timber [E = 1,600 ksi] column cannot change by more than 0.035 in., determine the maximum load P that can be applied to the column. Let b = 6.00 in., d = 8.25 in., and L = 96 in.

A 3D printer is used to create a shock absorbed composed of two polymers. Polymer (1) [E = 200 ksi] has a cross-sectional area of 1.4 in.2. Polymer (2) [E = 280 ksi] has a cross-sectional area of 1.4 in.2. After the shock absorber is loaded between steel plates by load P = 580 lb, determine the load carried by polymer (2).

If rod (1) elongates 0.210 mm and rod (2) elongates 0.487 mm, determine how far downward E moves. Let a = 0.34 m and b = 0.76 m.

A load of P = 8,500 lb is applied to the connection. If the average shear stress in the bolts is limited to 31 ksi and the required factor of safety is 2.3, determine the minimum allowable bolt diameter.

If a load of P = 9 kN is applied to rod (2), determine the magnitude of the resultant force at C. Let a = 0.49 m and b = 0.70 m.

If rod (1) elongates 0.277 mm and rod (2) elongates 0.461 mm, determine how far downward E moves. Let a = 0.41 m and b = 0.68 m.

A load of P = 12,100 lb is applied to the connection. If the average shear stress in the bolts is limited to 32 ksi and the required factor of safety is 2.1, determine the minimum allowable bolt diameter.

Axial loads are applied with rigid bearing plates to the solid cylindrical rods. One load of P = 130 kN is applied to the assembly at A, two loads Q = 40 kN are applied at B, and two loads R = 140 kN are applied at C. Determine the total change in length of the assembly.L1 = 0.22 m, E1 = 196 GPa, A1 = 0.0014 m2L2 = 0.44 m, E2 = 200 GPa, A2 = 0.0004 m2L3 = 0.36 m, E3 = 110 GPa, A3 = 0.0015 m2

A 3D printed polymer rod measures 193.00 mm in length while on the heated print bed at 67.1°C. After cooling to room temperature at 22.0°C the rod measures 192.36 mm in length. Determine the coefficient of thermal expansion of the polymer.