1. A closely coiled helical spring made of 15 mm diameter steel wire has 15 coils...
1. A closely coiled helical spring made of 15 mm diameter steel wire has 15 coils of 110 mm mean diameter. The spring is subjected to an axial load of 180 N. Calculate the maximum shear stress induced in the spring. Assume modulus of rigidity is 78 GPa.
2. A solid circular bar ABC consists of two segments, as shown in the figure. One segment has diameter d1= 65 mm and length L1 = 1.54 m; the other segment has diameter d2 = 45 mm and length L2 = 1.1 m.
What is the angle of twist if the torque T = 600 Nm? (Assume G = 75 GPa).
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1. A closely coiled helical spring made of 15 mm diameter steel
wire has 15 coils...
A close-coiled helical spring has a mean coil diameter 120 mm. A load of 4 kN...
A close-coiled helical spring has a mean coil diameter 120 mm. A load of 4 kN causes a deflection of 50 mm and a maximum stress of 500 MPa. Calculate 4.1. a) The wire diameter b) The number of coils c) The energy absorbed when subjected to the maximum load d) The spring stiffness 4.2. By use of a clearly labelled neat sketch, show that the deflection in a close-coiled 12] where Wis ; where W is the axial load...
Problem: A helical compression spring is made with music wire with wire diameter of 5 mm,...
Problem: A helical compression spring is made with music wire with wire diameter of 5 mm, mean coil diameter of 51 mm, a total of 12 coils, a free length of 127 mm, with squared ends. (a) Find the solid length. (b) Find the force necessary to deflect the spring to its solid length.
Question 6 A composite spning has two close-coiled helical springs in series One spring is made...
Question 6 A composite spning has two close-coiled helical springs in series One spring is made of steel with a mean coil diameter of 15 mm, wire diameter 15 mm and has 10 coils The other spring is made from bronze with a mean coil diameter of 20 mm and wire diameter of 2 mm and B coils Calculate 61 The stiffness of the composite spring, 62 The greatest load that can be camned by the composite spring of the...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
A helical compression srping is to be made of oil-tempered wire of 4 mm diameter with...
A helical compression srping is to be made of oil-tempered wire of 4 mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. Su = 1750 Mpa, allow for a 10% clash allowance and G = 79 GPa....
A semi-elliptical spring has ten leaves in al, with the two full length leaves extending 625...
A semi-elliptical spring has ten leaves in al, with the two full length leaves extending 625 mm It is 62.5 mm wide and 6.25 mm thick. Design a helical spring with mean diameter of coil 100 mm which will have approximately the same induced stress and deflection for any load. The Young's modulus for the material of the semi-elliptical spring may be taken as 200 kN/mm2 and modulus of rigidity for the material of helical spring is 80 kN/mm2 17...
1) [60 pts] Helical Compression Spring A helical compression spring is wound using music wire of...
1) [60 pts] Helical Compression Spring A helical compression spring is wound using music wire of diameter, d, 2.64 mm. The spring has an outside diameter, OD, of 33 mm with plain ground ends and 14 coils. a) Estimate the spring rate. The spring rate is N/mm. b) What is the force needed to compress this spring to closure assuming that the spring will reach its shear strength at its solid length? The force needed to compress this spring to...
A bar ABCD with varying cross section and subjected to axial loads is shown schematically in...
A bar ABCD with varying cross section and subjected to axial loads is shown schematically in Figure Q3. Take modulus of elasticity of bar as 202 GPa. The length of each section L1 = 111 mm; L2 = 205 mm; and L3 = 451 mm. The cross sectional dimensions are as follows: Section 1 is square with side 49 mm, Section 2 is circular with diameter 79 mm and Section 3 is circular with diameter 32 mm. The forces are...
A close-coiled helical spring has a mean coil diameter 120 mm. A load of 4 kN causes a deflection of 50 mm and a maximum stress of 500 MPa. Calculate 4.1. a) The wire diameter b) The number of coils c) The energy absorbed when subjected to the maximum load d) The spring stiffness 4.2. By use of a clearly labelled neat sketch, show that the deflection in a close-coiled 12] where Wis ; where W is the axial load...
Problem: A helical compression spring is made with music wire with wire diameter of 5 mm, mean coil diameter of 51 mm, a total of 12 coils, a free length of 127 mm, with squared ends. (a) Find the solid length. (b) Find the force necessary to deflect the spring to its solid length.
Question 6 A composite spning has two close-coiled helical springs in series One spring is made of steel with a mean coil diameter of 15 mm, wire diameter 15 mm and has 10 coils The other spring is made from bronze with a mean coil diameter of 20 mm and wire diameter of 2 mm and B coils Calculate 61 The stiffness of the composite spring, 62 The greatest load that can be camned by the composite spring of the...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
1- A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. (a) Determine the spring rate. (b) Determine the minimum hole diameter for the spring to...
A helical compression srping is to be made of oil-tempered wire of 4 mm diameter with a spring index of C = 10. The spring is to operate inside a hole, so buckling is not a problem and the ends can be left plain. The free length of the spring should be 80 mm. A force of 50 N should deflect the spring 15 mm. Su = 1750 Mpa, allow for a 10% clash allowance and G = 79 GPa....
A semi-elliptical spring has ten leaves in al, with the two full length leaves extending 625 mm It is 62.5 mm wide and 6.25 mm thick. Design a helical spring with mean diameter of coil 100 mm which will have approximately the same induced stress and deflection for any load. The Young's modulus for the material of the semi-elliptical spring may be taken as 200 kN/mm2 and modulus of rigidity for the material of helical spring is 80 kN/mm2 17...
1) [60 pts] Helical Compression Spring A helical compression spring is wound using music wire of diameter, d, 2.64 mm. The spring has an outside diameter, OD, of 33 mm with plain ground ends and 14 coils. a) Estimate the spring rate. The spring rate is N/mm. b) What is the force needed to compress this spring to closure assuming that the spring will reach its shear strength at its solid length? The force needed to compress this spring to...
A bar ABCD with varying cross section and subjected to axial loads is shown schematically in Figure Q3. Take modulus of elasticity of bar as 202 GPa. The length of each section L1 = 111 mm; L2 = 205 mm; and L3 = 451 mm. The cross sectional dimensions are as follows: Section 1 is square with side 49 mm, Section 2 is circular with diameter 79 mm and Section 3 is circular with diameter 32 mm. The forces are...
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