考虑椭圆化和材料各向异性的管道极限弯矩承载力解析解研究
发布时间:2019-05-17 15:02
【摘要】:已有的管道极限弯矩承载力解析方法忽略了截面的椭圆化变形,且假设管道截面达到全塑性抵抗力,这对于薄壁管道是不合理的。针对这些不足,在已有解析解的基础上,考虑管道截面塑性区的椭圆化变形以及管道轴向与环向材料的各向异性,推导了管道在内压、轴向力和弯矩联合荷载作用下的极限弯矩承载力解析解。并通过定义材料屈服后不同的广义模量,提出了管道极限弯矩承载力的上限解析解和下限解析解。在此基础上,研究了材料各向异性系数、径厚比以及初始荷载等参数对极限弯矩承载力上限和下限解析解的影响,并得到了一些有益的结论。
[Abstract]:The existing analytical method of the ultimate bending moment of the pipe ignores the ovalization of the section, and it is assumed that the section of the pipe reaches the full-plastic resistance, which is unreasonable for the thin-wall pipe. Based on the existing analytical solution, the analytic solution of the ultimate bending moment capacity under the combined load of the inner pressure, the axial force and the bending moment of the pipe is derived based on the existing analytical solution. The upper and lower analytical solutions of the ultimate bending moment capacity of the pipe are presented by defining the different generalized modulus of the material after yielding. On this basis, the influence of the parameters such as the material anisotropy coefficient, the thickness ratio and the initial load on the upper limit and the lower limit analytical solution of the ultimate bending moment is studied, and some useful conclusions are obtained.
【作者单位】: 大连理工大学海岸和近海工程国家重点实验室;
【基金】:国家重点基础研究发展计划(973计划)(2011CB013702) 新世纪优秀人才支持计划资助(NCET-11-0051)
【分类号】:P756.2;TE973
本文编号:2479192
[Abstract]:The existing analytical method of the ultimate bending moment of the pipe ignores the ovalization of the section, and it is assumed that the section of the pipe reaches the full-plastic resistance, which is unreasonable for the thin-wall pipe. Based on the existing analytical solution, the analytic solution of the ultimate bending moment capacity under the combined load of the inner pressure, the axial force and the bending moment of the pipe is derived based on the existing analytical solution. The upper and lower analytical solutions of the ultimate bending moment capacity of the pipe are presented by defining the different generalized modulus of the material after yielding. On this basis, the influence of the parameters such as the material anisotropy coefficient, the thickness ratio and the initial load on the upper limit and the lower limit analytical solution of the ultimate bending moment is studied, and some useful conclusions are obtained.
【作者单位】: 大连理工大学海岸和近海工程国家重点实验室;
【基金】:国家重点基础研究发展计划(973计划)(2011CB013702) 新世纪优秀人才支持计划资助(NCET-11-0051)
【分类号】:P756.2;TE973
【相似文献】
相关期刊论文 前1条
1 张九菊;段梦兰;毛东风;马建敏;苏宁宁;桂津;;管线上卷极限弯矩分析[J];应用力学学报;2012年03期
相关会议论文 前6条
1 汤关祚;王清;禹琦;;先张法预应力混凝土管桩抗裂弯矩和极限弯矩计算公式的探讨[A];预制混凝土木桩学术论文集[C];2004年
2 汤关祚;王清;禹琦;;先张法预应力混凝土管桩抗裂弯矩和极限弯矩计算公式的探讨[A];中国混凝土与水泥制品协会2012年会论文集[C];2012年
3 苏晨亮;李昕;周晶;;腐蚀缺陷管道极限弯矩承载力数值分析[A];第20届全国结构工程学术会议论文集(第Ⅱ册)[C];2011年
4 陈孙艺;柳曾典;陈进;何录武;;异径弯管在闭弯弯矩作用下的弹性应力及闭弯极限弯矩解析解[A];压力管道技术研究进展精选集——第四届全国管道技术学术会议[C];2010年
5 周详;;Cora-3判别法对钢纤维钢筋砼梁极限弯矩的模式识别[A];纤维水泥与纤维混凝土——全国第四届学术会议论文集(二)[C];1992年
6 周详;;Cora-3判别法对钢纤维钢筋砼梁极限弯矩的模式识别[A];第八届全国结构工程学术会议论文集(第Ⅱ卷)[C];1999年
相关硕士学位论文 前1条
1 徐沙;大型双壳油轮破损后总纵极限承载能力的研究[D];华中科技大学;2007年
,本文编号:2479192
本文链接:https://www.wllwen.com/kejilunwen/haiyang/2479192.html