Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test

This paper introduces some experimental data measured from 63 impact tests of pre−stressed strand cables. The test specimens consist seven steel wires that have a length equivalent to 100 times the outside diameter. To ensure consistency with engineering service status, cables are fully installed in specially designed device and axially pre−stretched 0% 40% ultimate bearing capacity before being subjected lateral impact. mass indenter is 50.34 kg, maximum velocity reaches 13 m/s. Two dimensionless variables, axial force input kinetic energy, used control parameters. recorded show energy pre−stress level key factors governing behavior, which mainly characterized by plastic deformation controlled combination tension flexure, dynamic fracture concentrated zone joint effects compression, shear. As increases, mode specimen changes elastic rebound deformation, finally evolves into or all wires, correspond slight, partial total loss pre−tension, respectively. An increase will significantly reduce critical displacement structural failure but has little effect on energy. present provides basic mechanical analysis framework for analysis, design evaluation behavior strands under accidental