METHOD OF EVALUATION FOR STRUCTURAL SAFETY TO BLAST LOADS

摘要

PURPOSE: A structure stability evaluation method for explosion loads is provided to accurately calculate a response of a non-linear area in a structure. CONSTITUTION: A DAF(dynamic amplification factor) is multiplied with an deducted displacement according to nonlinear static analysis. Dynamic maximum displacement is acquired by a multiplication method. The DAF is applied regardless of the duration of explosion loads. The maximum of the DAF is 1.5. The nonlinear static displacement is calculated by an implicit method. [Reference numerals] (AA) Response ratio; (BB) Linear impulsive region; (CC) Linear dynamic region; (DD) Linear quasistatic area; (EE) Nonlinear impulsive region; (FF) Nonlinear dynamic region; (GG) Nonlinear quasi-static region; (HH) Duration time/natural period of linear system