Numerical Analysis of the Ultimate Bearing Capacity of Thin-walled Rectangular-section Columns Using 18Mn2CrMoBA High Strength Steel in Bending and Axial Compression

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Gao, L.^1 ; Wang, Q.^1 ; Bai, L.Y.^1 ; Jiang, K.B.^1

Field Engineering Institute of Army Engineering, University of PLA, Nanjing Jiangsu

210007, China^1

关键词: Channel sections;    Flange width;    Numerical calculation;    Numerical results;    Proposed calculation formulas;    Rectangular section;    Slenderness ratios;    Ultimate bearing capacity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/2/022006/pdf
DOI  :  10.1088/1757-899X/392/2/022006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The ultimate bearing capacity of thin-walled rectangular-section columns (which is welded by channel section steel plate) using 18Mn2CrMoBA high strength steel in bending and axial compression was studied by finite element method. The influence of slenderness ratio, flange width-thickness ratio and section side ratio on the ultimate bearing capacity of member was studied. The calculation method for ultimate bearing capacity of member was proposed on the basis of previous study (which can be found reference document) and many numerical calculation results. Results show that the moment-compression interactive curve changes downward concave from upward bulge with the increasing of slenderness ratio, the ultimate bearing capacity was reduced with the flange width-to-thickness ratio and section side ratio increased, the effects of these parameters were interactive. The proposed calculation formula is in good agreement with the finite element numerical results.