Question

A helical compression spring is made of 3mm diameter music wire. The outside coil diameter of the spring is 14mm. Find the static load of the spring in N if the torsional yield stress is 3.7GPa.

Answer #1

A helical compression spring is made of 3mm diameter music wire.
The outside coil diameter of the spring is 14mm. Find the static
load of the spring in N if the torsional yield stress is
3.7GPa.

A helical compression spring is made of 302 stainless steel
wire. The outside coil diameter of the spring is 33.2 mm. The wire
diamter is 2.8 mm. The ends are plain and ground, and there are
total of 8.5 turns. Determine the deflection of the spring when it
is subjected to a compression force of 10 N. In this condition, wil
the stress generated in the spring be beyond the maximum allowable
torsional stress?

A helical compression spring is made from music wire that is
1.04 mm in diameter and has an outer coil diameter of 13.74 mm with
a free length of 50.8 mm and 10 total coils with plain ends.
What is the solid length Ls?
What is the spring rate k in N/m ?
If the spring rate is 1000 N/m what is the maximum shear stress,
tau , in the wire when the spring is compressed 25.4 mm from its...

A helical compression spring is made of 5mm diameter hard-drawn
wire. Determine the torsional yield strength of the wire in
MPa.

A helical compression spring is made of hard‐drawn steel wire
0.080‐in in diameter, has an outside diameter of 0.880 in, and a
pitch of 0.040 in. The ends are plain and ground, and there are 8
total coils. If the spring is supported by two parallel plates, is
it possible that the spring can buckle in service? Support your
response quantitatively.

A close-coiled helical spring has a wire diameter of 2.5 mm and
a mean coil diameter of 4Omm. The
spring is subjected to a combined axial load of 60N and a torque
acting about the axis of the spring. determine the
maximum permissible torque if (a) the material is brittle and
ultimate failure is to beavoided, the criterion of failure is
the maximum tensile stress, and the ultimate tensile stress is 1.2
GN/m2, (b) the material is ductile and failure...

A helical spring is to provide a minimum force of 600 N at
installation and have a working deflection of 25 mm. The spring
rate is 13 N/mm. The coil must fit in a 55 mm diameter hole with at
least 2.5 mm clearance. Use a 6.5 mm diameter unpeened music wire
with squared and ground ends. Using 15% clash allowance, find:-
i. spring constant
ii. free length of the spring.
iii. the ‘solid’ length of the spring
iv. Draw...

A compression spring has the following
conditions:
Axial load = 1.0 lb; Spring OD = 0.5”; 0.06” wire diameter;
Squared and ground ends; 20 total turns; Material is oil-tempered
steel wire Spring’s free length = 3.0”
Answer the following:
What is the safety factor with respect to stress? (N=can
do/doing=allowable stress/induced stress)
Will the spring bottom out (i.e., reach solid length with
applied load)? Yes or no?
What is the safety factor with respect to buckling? (N=can
do/doing=allowable ?/induced ?)

1. Evaluate a music wire spring with plain ends where
the wire diameter is 0.100” and the outer
diameter is 0.600”. The desired spring rate is 100 lbf/in and the
free length is 2.4”. Let the load
safety factor be 1.00.
e) What is the maximum suggested deflection?
f) What is the force to close to solid, Fs?
g) What is the critical length?
h) What is the critical frequency?
i) What is the factor of safety, solid, ns?

A precision laboratory resistor is made of a coil of wire 1.60
cm in diameter and 4.00 cm long, and it has 540 turns.
(a) What is its self-inductance (in mH)? ______mH
(b) What average emf (in V) is induced if the 11.0 A current
through it is turned on in 5.00 ms (one-fourth of a cycle for 50 Hz
AC)? ____V
(c) What is its inductance (in mH) if it is shortened to half
its length and counter-wound (two...

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