Identification of Sudden Stiffness Change in the Acceleration Response of a Nonlinear Hysteretic Structure

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Damage scenario</td><td class="align_center">Damage novelty, location, and extent</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Case 1</td><td class="align_center"><i>t</i> = 10 s, <i>k</i><sub>2</sub> = 102.64 kN/m ⟶ 61.58 kN/m</td></tr><tr><td class="align_left" colspan="2"><hr/></td></tr><tr><td class="align_left" rowspan="2">Case 2</td><td class="align_center"><i>t</i> = 10 s, <i>k</i><sub>1</sub> = 102.64 kN/m ⟶ 71.85 kN/m</td></tr><tr><td class="align_center"><i>t</i> = 20 s, <i>k</i><sub>2</sub> = 102.64 kN/m ⟶ 71.85 kN/m</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Shock and Vibration

tab9

Table 9

Table 9: Identification of Sudden Stiffness Change in the Acceleration Response of a Nonlinear Hysteretic Structure 