14.8 A helical compression spring used for static loading has d = 3 mm, D = 15 mm, N = 10, and squared ends. Determine a. The spring rate and the solid height b. The maximum load that can be applied without causing yielding W T B di- do Section A-B Do
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- The helical compression spring is made of 12mm wire diameter with 132 mm mean diameter. Determine stiffness of the spring when modulus of rigidity G=80 kN/mm2,number of turn is 13 and axial load is 190N. Select one: O a. 12N/mm O b. 4.5N/mm O c. 9.5N/mm O d. 17N/mmClear my choice Question 28 Compression coil spring is subjected to load of 500 N is having the mean diameter of 65 mm, wire diameter of 6 mm, number of active coil is 18. Find the shear stress without curvature? Select one: 2. O a. 867 N/mm O b. 400.81 N/mm O C. 481.6 N/mm O d. 563.56 N/mm hpA leafs spring contains 4 full-length and 8 graduated leafs. The eyebolts at the support are 20 inches apart and the system should carry a load of 400 lbs. If the thickness of the available bronze plate is 1“ and Sy = 80 ksi, what leaf width is required at FOS = 8?
- A helical spring with a load range of from 450 N to 800 N from valve-closed to valve-open conditions is used to close the valve of a spring-set relief valve having a lift of 10 mm. Assuming the spring wire to be of chrome vanadium steel, the spring is rendering average service, determine the diameter of the wire if the spring index is 7 and Sg - 420 MPa. Use G=83GPA. Select one: O a. 2.4-mm wire O b. 5-mm wire O c. 6-mm wire O d. 7-mm wireFor the helical compressive spring under fatigue load must meetGiven a spring with 2.032 mm wire diameter, oil tempered, 8 active coils, OD is 8.5 mm. Determine the free length if the stress will not exceed 820 MPa when spring is compressed solid. Use G = 83 MPa and assume the springs has plain ends. a. 51.6 mm b. 41.6 mm c. 31.6 mm d. 21.6 mm
- A safety valve spring having 9 and /2 coils has the ends squared and ground. The outside diameter of the coil is 115 mm and the wire is 13 mm. It has a free length of 203 mm. The length of which this spring must be initially compressed to hold a boiler pressure of 1.38 MPa on the seat of 32 mm diameter. Modulus of rigidity is taken as G=80GN/m2. a. Find the spring deflection and the operating length b. Calculate the solid length and the deflection of solid length c. Compute the solid force and the Wahl factorA helical compression spring has a scale of 400 lbs/inch, an inside diameter of 2.5 inches, a free length of 8 inches and with squared and ground ends. Material is to be chrome vanadium steel. For a load P of 750 lbs and for the average service Determine the standard size wire diameter Determine the number of active coils Determine the solid height Determine the stress at solid heightThe 500 N load is acting on the helical compression spring with 20 number of turns. The helical spring is having the mean diameter of 12cm,spring wire diameter is 6mm. Find the spring inside diameter. Select one: O a. 114 mm O b. 52mm O c. 150mm O d. 20mm
- A high alloy spring has an active coil of 16 and modulus ofelasticity in shear of 85 GPa. Compute the Wahl factor. Thespring outside diameter is 9.66 cm and wire diameter is 0.65 cm.A typical compound helical spring consists of two coaxial closed coil spring having the following particulars: Outer spring 1: mean coil diameter = 100 mm Wire diameter = 12.5 mm No. of turns = 15 Inner spring 2: mean coil diameter = 75 mm No. of turns = 20Both the springs are of equal initial length when unloaded. Ifthe working stress for each spring is to be same. The modulus of rigidity for the wire material is 80 GPa. Calculate the following:a. Diameter of steel wire for inner spring. b. Stiffness of inner springc. Stiffness of the compound spring. I need answer ASAP. Thank you!4. A vertical spring loaded valve is required for a compressed air receiver. The valve is to start opening at a pressure of 1 N/mm2 gauge and must be fully open with a lift of 4 mm at a pressure of 1.2 N/mm? gauge. The diameter of the port is 25 mm. Assume the allowable shear stress in steel as 480 MPa and shear modulus as 80 kN/mm. Design a suitable close coiled round section helical spring having squared ground ends. Also specify initial compression and free length of the spring.