National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Truck Design Optimization Project. Phase II. Phase I. Data Evaluation and Analysis Report.

PB300969

Publication Date	1979
Personal Author	Gibson, D. W.; Glaser, R. J.
Page Count	81
Abstract	As part of the TDOP Phase II project, the FRA directed Wyle Laboratories to evaluate and analyze the test data acquired during TDOP Phase I for use in Phase II model validation and specification of performance indices. These data were contained on 204 magnetic tapes and computer printouts. The applicability of the Phase I test data to Phase II was evaluated from three points of view. The first was completeness of the test matrix. Most Phase I tests were conducted using the 70 ton refrigerator car on an ASF ride control truck with new wheel profiles. Although this over-emphasis on one configuration will necessitate additional testing of the Type I truck, it was possible to derive useful information from the Phase I test data. The second was measurement accuracy. The quality of measurements was acceptable except for measurements of lateral wheel force at the wheel/rail interface and in the detection of ALD targets. The third point of view was the Phase I data's adequacy to perform the Type I truck model validation and specification of performance indices. The data in the regimes of ride quality and lateral stability appear to be adequate. In the regimes of curve negotiation and trackability, the lack of adequate measurements of wheel/rail forces makes it difficult to extract meaningful information from the data.
Keywords	Freight cars Undercarriage Refrigerator cars Design Lateral stability Loads(Forces) Computer programming Fortran Data acquisition Wheel rail interactions Ride quality Computer aided design
Source Agency	Federal Railroad Administration
NTIS Subject Category	85I - Railroad Transportation
Corporate Authors	Wyle Labs., Colorado Springs, CO. Scientific Services and Systems Group.; Federal Railroad Administration, Washington, DC. Office of Research and
Supplemental Notes	See also PB-288 739.
Document Type	Technical Report
Title Note	Technical rept. Dec 77-Apr 79.
NTIS Issue Number	197926
Contract Number	DOT-FR-742-4277

Truck Design Optimization Project. Phase II. Phase I. Data Evaluation and Analysis Report.

Truck Design Optimization Project. Phase II. Phase I. Data Evaluation and Analysis Report.
PB300969

Publication Date	1979
Personal Author	Gibson, D. W.; Glaser, R. J.
Page Count	81
Abstract	As part of the TDOP Phase II project, the FRA directed Wyle Laboratories to evaluate and analyze the test data acquired during TDOP Phase I for use in Phase II model validation and specification of performance indices. These data were contained on 204 magnetic tapes and computer printouts. The applicability of the Phase I test data to Phase II was evaluated from three points of view. The first was completeness of the test matrix. Most Phase I tests were conducted using the 70 ton refrigerator car on an ASF ride control truck with new wheel profiles. Although this over-emphasis on one configuration will necessitate additional testing of the Type I truck, it was possible to derive useful information from the Phase I test data. The second was measurement accuracy. The quality of measurements was acceptable except for measurements of lateral wheel force at the wheel/rail interface and in the detection of ALD targets. The third point of view was the Phase I data's adequacy to perform the Type I truck model validation and specification of performance indices. The data in the regimes of ride quality and lateral stability appear to be adequate. In the regimes of curve negotiation and trackability, the lack of adequate measurements of wheel/rail forces makes it difficult to extract meaningful information from the data.
Keywords	Freight cars Undercarriage Refrigerator cars Design Lateral stability Loads(Forces) Computer programming Fortran Data acquisition Wheel rail interactions Ride quality Computer aided design
Source Agency	Federal Railroad Administration
NTIS Subject Category	85I - Railroad Transportation
Corporate Authors	Wyle Labs., Colorado Springs, CO. Scientific Services and Systems Group.; Federal Railroad Administration, Washington, DC. Office of Research and
Supplemental Notes	See also PB-288 739.
Document Type	Technical Report
Title Note	Technical rept. Dec 77-Apr 79.
NTIS Issue Number	197926
Contract Number	DOT-FR-742-4277