Abstract: The peak response under pulse excitation, of a single-degree-of-freedom system with nonlinear spring approximated by two straight lines, is analytically determined. Shock spectra for the step and ...

Abstract: The inverse problem of determining damping from frequency response is formulated as an optimization problem. Response data are sequentially processed by an algorithm which refines the estimate ...

Abstract: A method of identifying structural parameters such as damping and stiffness of a building from its time response under dynamic excitation is presented. A least-squares recursive computer algorithm ...

Abstract: The steady-state whirl-spin relationships for the pendulously supported flywheel with bearing flexibilities, stiff sections of shaft and gyroscopic action are derived and experimentally verified. ...