Structural analysis using line elements to model members with non-symmetric cross sections

摘要

This study investigated the response of non-symmetric cross sections using line finite element models that were created with conventional elements that assumed a doubly symmetric response and sophisticated elements that included additional non-symmetric behavior. These models were compared to shell element models and experimental results when available. It was found that in many cases the doubly symmetric analyses missed physical responses that the non-symmetric analyses could capture. It was observed that twisting and second order effects due to twisting played a significant factor in the final response. Furthermore, consideration of non-symmetric behavior was required to calculate some responses accurately.