Response of axially preloaded spiral strands to impact loading

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Computers and Structures

DOI:https://doi.org/10.1016/0045-7949(94)90043-4· OSTI ID:53454

Raoof, M; Huang, Y P; Pithia, K D ^[1]

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1. South Bank Univ., London (United Kingdom)

Coupled extensional-torsional behavior of axially preloaded multilayered spiral strands under specific forms of impact loading is considered. By employing coupled extensional-torsional constitutive equations for steel cables, a pair of wave equations, describing extensional-torsional displacements at any location along the spiral strand with one end fixed against movement, are obtained. Due to the presence of significant levels of interwire friction, it is argued that for sufficiently small levels of externally applied impact loads on axially preloaded and fully bedded-in spiral strands, one must use the no-slip (i.e. rigid rod) version of the constitutive relations in preference to the traditional full-slip versions which are the ones often quoted by cable manufacturers based on their shop measurements. Comparison of numerical results for the wave propagation data based on the no-slip and full-slip constitutive relations suggest substantial differences which may have significant practical implications for nondestructive wire fracture detection devices which are currently under development. 27 refs.

• OSTI ID: 53454
• Journal Information: Computers and Structures, Journal Name: Computers and Structures Journal Issue: 2 Vol. 51; ISSN 0045-7949; ISSN CMSTCJ
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
CABLES
COMPUTERIZED SIMULATION
IMPACT STRENGTH
IMPACT TESTS
STRESS ANALYSIS
WAVE PROPAGATION