A railway car wheel rolls on a rail. Both rail and wheel are made of steel for which E= 210 GPa and v= 0.3. The wheel has a radius of R₁ = 0.4 m, and the cross radius of the rail top surface is R₂ = 0.3 m (Fig. 13-14). Determine the size of the contact area and the maximum contact pressure if compressive load P is 90 kN. R₂ Fig. 13-14.

A railway car wheel rolls on a rail. Both rail and wheel are made of steel for which E= 210 GPa and v= 0.3. The wheel has a radius of R₁ = 0.4 m, and the cross radius of the rail top surface is R₂ = 0.3 m (Fig. 13-14). Determine the size of the contact area and the maximum contact pressure if compressive load P is 90 kN. R₂ Fig. 13-14.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.6.1P: A steel bar has a square cross section of width b = 2.0 in. (sec figure). The bar has pinned...

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Concept explainers

Types of loading

In mechanical terminology, the term load indicates that external force/weight, either constant or variable, acts on a mechanical member/structure. The weight of an object of a specific material is also an external load, and the external force that works on a structure comes under the categories of loading. The external load generates its effects as stress and strain in the structure.

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A railway car wheel rolls on a rail. Both rail and
wheel are made of steel for which E = 210 GPa and v= 0.3. The wheel
has a radius of R₁ = 0.4 m, and the cross radius of the rail top surface is
R₂ = 0.3 m (Fig. 13-14). Determine the size of the contact area and the
maximum contact pressure if compressive load P is 90 kN.
PI
R ₂
RI
Fig. 13.14.

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