An Adaptive Section Discretization Scheme for the Nonlinear Dynamic Analysis of Steel Frames

The paper presents an adaptive section discretization scheme for the inelastic response analysis of structural members with cross sections that can be decomposed into rectangular and circular subdomains. Each subdomain consist a different material. As long as largest strain in does not exceed specified trigger values, contribution to is determined by numerically exact cubature rule subdomain. Once reaches value subdomain, it discretized fiber mesh numerical evaluation its midpoint integration rule. remains effect activated until end history. applies thin-walled common metallic structures investigates values on accuracy computational efficiency wide-flange steel multistory frames under static dynamic excitations.