Comparison of Inelastic Material Models Used toDetermine Steel Frame Limit Load Conditions

• 作者: Barry T.Rosson Harout Gurneian
• 来源期刊: 土木工程与建筑:英文版
• 学科: 工学
• 关键词: NONLINEAR analysis steel BUILDINGS STIFFNESS REDUCTION material model.
• 年，卷（期）: 2020,（2）
• 页码范围: 61-67
• 页数: 7页
• 分类号: TG1

摘要

The reduced stiffness conditions of steel W-Shape sections were evaluated and used to develop a new inelastic material model for a given axial load and bending moment.The new material model allows for direct input of paramters to adjust the stiffness reduction based on the W-shape’s dimensional properties,axis of bending,axial load and residual stress ratio.Numerous second-order,inelastic analyses up to the limit load were performed on three steel building frames using the new material model and the inelastic material model used in the AISC direct analysis method.Discussion is given regarding the two material models and their ability to match the ultimate load capacity results of the three test frames.