Developing Finite Element Models to Examine Rail Defects under Combined Loading

Carolan, Michael; Perlman, Benjamin

i

Developing Finite Element Models to Examine Rail Defects under Combined Loading

2019-04-10
By Carolan, Michael ; Perlman, Benjamin

File Language:

English

Details

Creators:

Carolan, Michael ; Perlman, Benjamin
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.)
Corporate Contributors:

United States. Department of Transportation. Federal Railroad Administration
Subject/TRT Terms:
Publication/ Report Number:

JRC2019-1268
Resource Type:

Proceedings
Geographical Coverage:

United States
Corporate Publisher:

American Society of Mechanical Engineers
Abstract:

This paper lays out a framework for examining individual modeling techniques employed in the model, using a “building block” approach. Rather than trying to assess the entire model of a wheel on a discretely-supported rail containing an internal defect against a test measurement of the same conditions, the model is broken down into several key behaviors that must be verified. These distinct model behaviors, such as the method of discrete support, are then individually compared to known results to develop confidence in the simulation’s ability to produce physically-realistic results. In this way, confidence can be developed in the overall, complete model by developing confidence in several of the distinct modeling techniques that are employed in the overall model. The modeling techniques described in this paper include modeling the discretely-supported rail under a wheel load, modeling the internal defect as a crack, and using a submodeling technique to combine areas of coarse and fine mesh in a computationally-efficient manner.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/39740/dot_39740_DS1.pdf
File Type:

[PDF - 558.61 KB]
Collection(s):

Volpe Center ; Federal Railroad Administration
Main Document Checksum:

urn:sha-512:f58237f95a4af20a30758b8d07030b8dcc841b29469ae14b0a1332d6190735b837b40dcd0df3227a8b8347e6e4eb22c590cf358374076c908543e58291382a83

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.