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  Title

  Energy analysis of vehicle-to-cable barrier impacts

  Author

  Schmidt, Jennifer D., author.  

  Publisher:

  Midwest Roadside Safety Facility, Nebraska Transportation Center, University of Nebraska-Lincoln,

  Pub date:

  [2013]

  Pages:

  viii, 92 pages :

  Item info:

  1 copy available at New York State Library.
  

  • 
  • Holdings			Change Display
    New York State Library
    	Copy	Material	Location
    TRA 470-4 ENEAV 213-1509	1	BOOK-Q	D-NYS-DOC (nocirc)

• MARC Record

  Energy analysis of vehicle-to-cable barrier impacts
  Schmidt, Jennifer D., author.
  

  Control number:

  ocn863057673

  Local control number:

  (OCoLC)863057673

  Gov. Doc. Call #:

  TRA 470-4 ENEAV 213-1509

  Title:

  Energy analysis of vehicle-to-cable barrier impacts / submitted by Jennifer Schmidt [and 7 others] ; submitted to New York State Department Of Transportation.

  Publication info:

  Lincoln, Nebraska : Midwest Roadside Safety Facility, Nebraska Transportation Center, University of Nebraska-Lincoln, [2013]

  Physical description:

  viii, 92 pages : color illustrations ; 28 cm.

  Content Type:

  text

  Series:

  (MwRSF research report ; no. TRP-03-283-13)

  Note:

  "Research project number TPF-5(193) supplement #130."

  Note:

  "June 11, 2013."

  Note:

  Includes bibliographical references (page 73).

  Report note:

  Final Report; 2010-2013.

  Summary:

  An accident reconstruction technique was developed for estimating the energy absorbed during an impact with a cable barrier system as well as the initial impact velocity. The kinetic energy absorbed during a cable barrier system impact is comprised of several components: (1) plastic deformation/rotation of posts in a rigid foundation or soil foundation; (2) vehicle-ground interaction; (3) internal cable energy; and (4) frictional losses during vehicle-barrier interaction. The energy absorbed by deforming the J-bolt clips was analyzed and determined to be negligible for this study. Charts were developed that estimate the energy absorbed by deforming S3x5.7 (S76x8.5) cable line posts based on the soil condition, deformed post orientation, and deformed post height above the ground. Charts were also developed relating the cable tension to the cable energy absorbed versus the lateral deflection of the vehicle and the frictional energy versus the vehicle's distance traveled for both a straight cable system and an exterior-curved cable system. However, without additional crash testing to verify the relationships, these charts are only applicable to the cable barrier systems for which the full-scale crash tests were conducted. In the straight system impact, the vehicle's estimated initial velocity using the reconstruction technique was 55.1 mph ± 3.0 mph (88.7 km/h ± 4.9 km/h), and the actual velocity of the vehicle was 61.6 mph (99.1 km/h). In one curved system impact, the vehicle's estimated initial velocity was 61.0 mph ± 0.3 mph (98.1 km/h ± 0.4 km/h), and the actual velocity of the vehicle was 61.6 mph (99.1 km/h). In another curved system impact, the vehicle's estimated initial velocity was 63.2 mph ± 2.4 mph (101.6 km/h ± 3.7 km/h), and the actual velocity of the vehicle was 63.1 mph (101.6 km/h). Future improvements for the cable barrier system accident reconstruction procedure are discussed.

  Other formats:

  Also available in electronic format.

  Held by:

  NYSL

  Subject:

  Roads--Guard fences--Testing.

  Subject:

  Accident investigation.

  Subject:

  Barriers (Roads). trt

  Subject:

  Energy absorption. trt

  Subject:

  Impact tests. trt

  Subject:

  Velocity. trt

  Added entry:

  Schmidt, Jennifer D., author.

  Added entry:

  Midwest Roadside Safety Facility, issuing body.

  Added entry:

  New York (State). Department of Transportation, sponsoring body.

  Series:

  (MwRSF research report ; no. TRP-03-283-13.)

  Electronic access:

  Online access http://files.library.northwestern.edu/transportation/online/unrestricted/2013/TRP-03-283-13.pdf

  Electronic access:

  https://purl.nysed.gov/nysl/863057673