Study of Dynamic Response of Stranded Wire Springs
Final technical rept.
MATH AND METRIK INC CHESHIRE CT
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A total of 60 TD-recordings were made of 5 different test springs, 42 records in impact loading at velocities up to 560 inchsec, and 18 records on the sudden release of spring, at extension velocities up to 830 inchsec. Each record was evaluated with respect to surge time both wave head and wave peak, velocities, minimum height reached, etc. For single wire springs, the formulas of the Surge Wave Theory were recapitulated and summarized and corresponding formulas were derived for stranded wire springs. These formulas use lumped values as parameters, such as the active weight of spring or per coil and the measured rate of the spring or coil, instead of wire diameter d and mean coil diameter D.