Read e-book online Creep Transition in Cylinders: Course held at the Department PDF

By Bhoi Raj Seth (auth.)

ISBN-10: 3211811702

ISBN-13: 9783211811702

ISBN-10: 3709129559

ISBN-13: 9783709129555

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Read or Download Creep Transition in Cylinders: Course held at the Department for Mechanics of Deformable Bodies June – July 1972 PDF

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Additional resources for Creep Transition in Cylinders: Course held at the Department for Mechanics of Deformable Bodies June – July 1972

Sample text

While Hertz’s theory is developed for a static case and assumes frictionless contact, the use of the Hertz theory to determine the shape and dimension of the contact area is widely accepted by the railroad vehicle research community. Hertz’s contact theory as well as several wheel/rail creep-force theories are discussed in more detail in Chapter 4. 5 GENERAL MULTIBODY RAILROAD VEHICLE FORMULATIONS By establishing a procedure for determining the normal and tangential creep forces as well as the creep spin moment, such a procedure can be systematically implemented in a general multibody system algorithm that can be used in the analysis of railroad vehicle models that include significant details.

In the discussion presented here and in Chapter 4, only the contact between one wheel and one rail is considered in order to focus on the procedure used for solving the contact problem. In the following section and in Chapter 5, the use of the contact formulation in general multibody system algorithms is discussed. Various contact models are used in different computer formulations to describe the wheel/rail interaction. In general, the contact between two rigid bodies can be at a single point or area, depending on the shape of the two bodies.

Fm Page 24 Thursday, May 31, 2007 2:25 PM 24 Railroad Vehicle Dynamics: A Computational Approach creepages. The basic assumptions used to derive the linearized creepages are summarized. It is shown that these assumptions are automatically satisfied if the roll angle is assumed to be zero. , 2006). This explains the significant differences between the railroad vehicle results predicted using computer codes that are based on fully nonlinear formulations and those codes that employ kinematic linearization of the creepages.

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Creep Transition in Cylinders: Course held at the Department for Mechanics of Deformable Bodies June – July 1972 by Bhoi Raj Seth (auth.)

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