• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of steel structures >Local-Overall Interactive Buckling of High Strength Steel Welded Circular Tubes under Axial Compression
【24h】

Local-Overall Interactive Buckling of High Strength Steel Welded Circular Tubes under Axial Compression

机译：Local-Overall Interactive Buckling of High Strength Steel Welded Circular Tubes under Axial Compression

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

In the present study, an investigation into the interactive buckling performance of high strength steel circular tubes was performed using finite element (FE) models verified against existing test data. The parametrical analysis of overall geometric imperfection, local geometric imperfection, and residual stresses incorporated in the FE models was performed. The result revealed that (i) the normalized member slenderness (lambda(nl)) of HSS circular tube columns significantly affected by overall geometric imperfection was in the range from 0.2 to 1.6, and the reduction of ultimate capacity was 5.05%, 5.35% and 3.23% with 460 MPa, 690 MPa and 960 MPa on average, respectively; (ii) the local geometric imperfection led to the ultimate capacity to be reduced by 2% on average, which can be ignored when lambda(nl) higher than 1.4; (iii) the reduction of ultimate capacity resulted from residual stresses was 11.39%, 8.93% and 6.54% with 460 MPa, 690 MPa and 960 MPa columns, and the pronouncedly influenced lambda(nl) varying from 0.4 to 1.6. Subsequently, overall slenderness limit used to identify failure modes was discussed. On the basis of numerical program, codified design rules for local buckling load of stub columns were re-examined for HSS circular tubes. Finally, the overall buckling factor of HSS columns was distinguished in conjunction with the local buckling resistance prediction formulas to evaluate the interactive buckling resistance of HSS circular tube columns.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号