Development of Advanced Finite Element Material Models for Cable Barrier Wire Rope

Reid, John D.; Lechtenberg, Karla A.; Stolle, Cody S.; Nebraska Transportation Center; University of Nebraska--Lincoln

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Development of Advanced Finite Element Material Models for Cable Barrier Wire Rope

2010-08-02
By Reid, John D. ; Lechtenberg, Karla A. ; Stolle, Cody S.

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Creators:

Reid, John D. ; Lechtenberg, Karla A. ; Stolle, Cody S.

Reid, John D. ; Lechtenberg, Karla A. ; Stolle, Cody S. Less -
Corporate Creators:

Nebraska Transportation Center ; University of Nebraska--Lincoln

Nebraska Transportation Center ; University of Nebraska--Lincoln Less -
Corporate Contributors:

Midwest Roadside Safety Facility ; Mid-America Transportation Center ; United States. Dept. of Transportation. Research and Innovative Technology Administration

Midwest Roadside Safety Facility ; Mid-America Transportation Center ; United States. Dept. of Transportation. Research and Innovative Technology Administration Less -
Subject/TRT Terms:

[+]

Barriers (Roads) Cable Guardrail Cables Computer Modeling Highways Highway Safety I85: Safety Devices Used In Transport Infrastructure Impact Tests Median Barriers Roadside Appurtenances Safety And Human Factors Wire Rope
Publication/ Report Number:

TRP-03-233-10 ; MATC-UNL: 220

TRP-03-233-10 ; MATC-UNL: 220 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States ; Nebraska

United States ; Nebraska Less -
TRIS Online Accession Number:

01340421
Edition:

Final Report
Corporate Publisher:

Mid-America Transportation Center
Abstract:

An improved LS-DYNA model of ¾-in. (19-mm) diameter 3x7 wire rope commonly used in roadside cable guardrail installations has been developed. A Belytschko-Schwer beam element was selected along with material *MAT_166. Numerical noise was reduced using part stiffness damping with a coefficient of 2%, and frequency range damping with a coefficient of 12%. The optimum element length based on timestep, accuracy, and computational cost was determined to be between 0.4 and 0.8 in. (10-20 mm). Dynamic component tests were conducted on wire rope to determine material properties. These tests were simulated and the results compared to the physical tests. The new proposed wire rope model more accurately simulated the wire rope tension and bogie vehicle motion than other previously-developed wire rope models. The wire rope was also modeled in full-scale crash test models using a Chevrolet C2500 pickup model, consistent with NCHRP Report No. 350 TL-3 impact conditions. Results of the crash test and simulation were compared, and the wire rope response was determined to be accurate. Therefore the new wire rope model was determined to be an improvement over existing models of wire rope and is recommended for use in cable guardrail simulations.
Format:

PDF
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:cd53df168c21e482a102d10a30d9d6b9143b50585cb6edaa3fc5d21624479ca3
Download URL:

https://rosap.ntl.bts.gov/view/dot/39715/dot_39715_DS1.pdf
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Development of Advanced Finite Element Material Models for Cable Barrier Wire Rope

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