摘要
为研究国产不锈钢梁的非线性变形性能,对4根焊接不锈钢梁进行静力加载试验,并采用有限元软件ANSYS进行数值模拟。试验材料为国产奥氏体不锈钢316,加载类型包括单点加载和两点加载。试验结果表明:由于不锈钢材料非线性的影响,在荷载水平较大时,不锈钢梁的变形性能具有明显的非线性;当材料屈服时,塑性挠度占总挠度的50%左右;出现较大的平面外位移时,塑性挠度增加更加显著。该试验结果可为国产不锈钢梁的挠度计算提供依据。
In order to investigate the inelastic deformation behavior of stainless steel beams, 4 stainless steel welded beams under pure bending and concentrated loading were performed. The tested material was austenitic stainless steel 316. The relationship between load and deflection was discussed and comparison between test results and results obtained by finite element method was made. The results showed that the deformation behavior of stainless steel performed non-linear load-deflection relationship because of the influence of nonlinear material properties ; when yield load reached, the plastic deflection was about half of total one; plastic deflection increased remarkably when out-ofplane displacement took place. The test results can provide a basis for the deflection cMculation of the domestic stainless steel I-beams.
出处
《工业建筑》
CSCD
北大核心
2012年第5期29-32,共4页
Industrial Construction
基金
北京市自然科学基金项目(8112018)
国家自然科学基金项目(51108007)
关键词
工形对称截面不锈钢梁
非线性
变形性能
试验研究
symmetric stainless steel I-beams
non-linear
deformation behavior
test research
作者简介
王元清，男，1963年出生，教授，博士生导师。E-mail：wang-yq@tsinghua．edu．cn
