It is required to design a helical torsion spring for a window - shade. The is made of patented spring and Cold-drawn.steel wire of Goraele 4. The yield strength of the material is 6oi. of the ultimate tensile strength, and the factor of Safety is 2. from space Cansid erations, the mean coil diameter is kept as 18mm. The maximum be- nding moment acting on the spring is 250N-mm. The modulny of elasticity of the kNlmm?). The stiffness of the rad). Determine the wire diameter and The mumber of active Gils. Fiso, detesomine the deflection.and.stored stainenergy. moterial is (207 spring should be(3 N-mm/ spring

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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It is required to design a helical torsion
spring for a window-Shade. The spring is made of patented
and Cold-drawn steel wire of Groede 4. The yield strength
of the material is Gol. of the ultimate tensile strength,and
from
the factor of Safety is 2.
Cansiderations, the
space
mean coil diameter is kept as 18 mm. The maximum be-
nding moment acting
modulny uf elas ticity of the
kNlmm?). The stiffness of the
on the spring is 250 N-mm. The
moterial is (207
should be(3 Nmm/
spring
spring
rad). Determine the wire diameter and the number of active
Gils. Also, deteromine the deflectinon.and.stered staincuerg-
Transcribed Image Text:It is required to design a helical torsion spring for a window-Shade. The spring is made of patented and Cold-drawn steel wire of Groede 4. The yield strength of the material is Gol. of the ultimate tensile strength,and from the factor of Safety is 2. Cansiderations, the space mean coil diameter is kept as 18 mm. The maximum be- nding moment acting modulny uf elas ticity of the kNlmm?). The stiffness of the on the spring is 250 N-mm. The moterial is (207 should be(3 Nmm/ spring spring rad). Determine the wire diameter and the number of active Gils. Also, deteromine the deflectinon.and.stered staincuerg-
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