1. A laminated steel spring, simply supported at the ends and centrally loaded, with a span of 75 cm is required to carry a proof load of 7.5 kN and the central deflection is not to exceed 5 cm. The bending stress must not be greater than 400 MN/m². Plates are available in mul- tiples of 1 mm for thickness and in multiples of 4 mm for width. Assuming width to be welve times the thickness and E = 200 GNm, determine suitable values for the thickness, width and number of plates and the radius to which the plates should be formed.

1. A laminated steel spring, simply supported at the ends and centrally loaded, with a span of 75 cm is required to carry a proof load of 7.5 kN and the central deflection is not to exceed 5 cm. The bending stress must not be greater than 400 MN/m². Plates are available in mul- tiples of 1 mm for thickness and in multiples of 4 mm for width. Assuming width to be welve times the thickness and E = 200 GNm, determine suitable values for the thickness, width and number of plates and the radius to which the plates should be formed.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

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1. A laminated steel spring, simply supported at the ends and centrally loaded,
with a span of 75 cm is required to carry a proof load of 7.5 kN and the central deflection is not to
exceed 5 cm. The bending stress must not be greater than 400 MN/m². Plates are available in mul-
tiples of 1 mm for thickness and in multiples of 4 mm for width.
Assuming width to be twelve times the thickness and E = 200 GNA, determine suitable values for
the thickness, width and number of plates and the radius to which the plates should be formed.

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