A helical spring made of hard-drawn wire having G = 29 GPa, supports a continuous load. Given: d = 6 mm, D = 30 mm, r. = 20% Design Requirements: The ends are squared and ground; one end is free to tip. In the most-compressed condition, the force is 600 N: after 13 mm of release, the minimum force is 340 N. Determine: a. The factor of safety based on the Soderberg criterion. b. The free height. c. The surge frequency. d. Whether the spring will buckle in service.
A helical spring made of hard-drawn wire having G = 29 GPa, supports a continuous load. Given: d = 6 mm, D = 30 mm, r. = 20% Design Requirements: The ends are squared and ground; one end is free to tip. In the most-compressed condition, the force is 600 N: after 13 mm of release, the minimum force is 340 N. Determine: a. The factor of safety based on the Soderberg criterion. b. The free height. c. The surge frequency. d. Whether the spring will buckle in service.
Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter1: Tension, Compression, And Shear
Section: Chapter Questions
Problem 1.8.4P: The inclined ladder AB supports a house painter (85 kg) at C and the weight iq = 40 K/m} of the...
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![A helical spring made of hard-drawn wire having G = 29
GPa, supports a continuous load.
Given: d = 6 mm, D = 30 mm, r. = 20%
Design Requirements: The ends are squared and ground;
one end is free to tip. In the most-compressed condition,
the force is 600 N: after 13 mm of release, the minimum
force is 340 N.
Determine:
a. The factor of safety based on the Soderberg criterion.
b. The free height.
c. The surge frequency.
d. Whether the spring will buckle in service.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F995ce8da-3ee6-45dd-a99d-fc1e9b1aa57e%2F1c55d19b-cee4-4ffe-b8b9-2edae32c79d5%2Fa3l3jpt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A helical spring made of hard-drawn wire having G = 29
GPa, supports a continuous load.
Given: d = 6 mm, D = 30 mm, r. = 20%
Design Requirements: The ends are squared and ground;
one end is free to tip. In the most-compressed condition,
the force is 600 N: after 13 mm of release, the minimum
force is 340 N.
Determine:
a. The factor of safety based on the Soderberg criterion.
b. The free height.
c. The surge frequency.
d. Whether the spring will buckle in service.
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