Integrated dynamic modeling of rail vehicles and infrastructure : modeling switch geometry.

Shabana, Ahmed A.; Hamper, Martin B.; National University Rail Center (U.S.)

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Integrated dynamic modeling of rail vehicles and infrastructure : modeling switch geometry.

2015-08-27
By Shabana, Ahmed A. ; Hamper, Martin B.

[PDF-83.03 KB]

English

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Creators:

Shabana, Ahmed A. ; Hamper, Martin B.

Shabana, Ahmed A. ; Hamper, Martin B. Less -
Corporate Creators:

National University Rail Center (U.S.)
Corporate Contributors:

United States. Dept. of Transportation. Research and Innovative Technology Administration ; University Transportation Centers Program (U.S.)

United States. Dept. of Transportation. Research and Innovative Technology Administration ; University Transportation Centers Program (U.S.) Less -
Subject/TRT Terms:

[+]

Computer Models Finite Element Method Railroad Tracks Railroad Trains Rolling Contact Switches (Railroads) Train Components
Publication/ Report Number:

NURail2012-UIC-R05-A
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

National University Rail Center (U.S.)
Abstract:

Many procedures have been proposed to solve the wheel/rail contact problem, most of which belong to one of two categories: off-line and on-line contact search methods. This investigation is focused on the development of a contact surface model for the wheel/rail contact problem in the case where an on-line three-dimensional non-conformal contact evaluation procedure, such as the elastic contact formulation - algebraic equations (ECF-A), is adopted. The goal is to demonstrate that the contact surface must have continuity in the second order spatial derivatives when used in conjunction with ECF-A. Many of the existing rail surface models rely on direct linear interpolation of profile curves which leads to first order spatial derivative discontinuities. This, in turn, leads to erroneous spikes in the prediction of contact forces. The main contribution of the work presented in this area is the development of a new finite element based procedure for representing the rail surface geometry in railroad vehicle contact problems.
Format:

PDF
Funding:

DTRT12-G-UTC18
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:537b40bac1fce421d2f5bbe9218fb7c3398a1ab96f75a501f102c50ff076d6f3
Download URL:

https://rosap.ntl.bts.gov/view/dot/30829/dot_30829_DS1.pdf
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Integrated dynamic modeling of rail vehicles and infrastructure : modeling switch geometry.

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