Answer to Question #218431 in Mechanical Engineering for Mihle

Question #218431

The following data refer to two close-coiled helical steel springs.

SPRING

FREE HEIGHT

d

D

N

1

55 mm

4,75 mm

30 mm

8

2

48 mm

5,3 mm

44 mm

6

One spring is placed inside the other, not touching each other, and compressed between a pair of parallel plates until the distance between the plates is 40 mm. Make a neat detailed sketch of the spring and plate assembly. If G = 83 GPa for both springs, calculate the following:

5.1 The force applied to the spring assembly. ​​​​​/4/

5.2 The shear stress induced in each spring.​​​​​​/3/

5.3 The total strain energy stored in the spring assembly.​​​​/3/

5.4 The stiffness of each spring.​​​​​​​/3/

5.5​The equivalent stiffness of a single spring that can be substituted in place of these springs.​​​​


1
Expert's answer
2021-07-19T03:15:58-0400


(Spring index)


(Pitch)

free length/N-1



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