梁-弹簧单元在内法兰螺栓简化中的应用
PDF下载 (276)尤 建,蒋昊成,史超铭,朱 珏.梁-弹簧单元在内法兰螺栓简化中的应用[J].宁波大学学报(理工版),2023,36(4):112-120.DOI:10.20098/j.cnki.1001-5132.2022.1129
YOU Jian,JIANG Haocheng,SHI Chaoming,ZHU Jue.Application of beam-spring element in inner flange bolt simplification[J].Journal of Ningbo University(Natural Science & Engineering Edition),2023,36(4):112-120.DOI:10.20098/j.cnki.1001-5132.2022.1129
| Title: | Application of beam-spring element in inner flange bolt simplification |
| 作者: | 尤 建, 蒋昊成, 史超铭, 朱 珏 |
| Author(s): | YOU Jian, JIANG Haocheng, SHI Chaoming, ZHU Jue |
| 关键词: | 内法兰; 螺栓简化; 梁-弹簧单元; 虚拟热变形法; 缩尺实验 |
| Keywords: | inner flange; bolt simplification; beam-spring element; virtual thermal deformation method; scale reduction test |
| 分类号: | O343 |
| DOI: | 10.20098/j.cnki.1001-5132.2022.1129 |
| 文献标识码: | A |
| 摘要: | 内法兰数值模型内含的螺栓接触行为极易导致其计算不收敛, 耗费大量的计算时间. 为平衡计算成本和精度, 构建螺栓连接结构的简化分析模型是主要手段之一. 本文对多点约束-梁单元法进行了改进, 提出一种梁-弹簧单元组合的螺栓简化方法, 该方法使用梁单元替代螺栓, 使用动力耦合约束和弹簧连接等效螺栓接触, 用经过修正的虚拟热变形法施加螺栓预紧力. 结果表明: 该方法的分析时间和多点约束-梁单元法接近, 相对全模型缩时约50％, 计算精度更高、误差更小. 采用该方法对通信单管塔内法兰连接节点进行分析, 与精细模型和缩尺实验比较结果证明, 该方法在内法兰结构中有较强的适用性. |
| Abstract: | The bolt contact behavior in the numerical model of the inner flange may easily lead to the non- convergence of its calculation, which consumes a lot of calculation time. In order to balance the consumption and accuracy of calculation, one of the main means is to build a simplified analysis model of the bolted structures. In this paper, the multi-point constraint beam element method is improved, and a simplified bolt method of beam spring element combination is proposed. The method uses beam element instead of bolt, uses dynamic coupling constraint and spring connection to equivalent bolt contact, and applies bolt preload by modified virtual thermal deformation method. The analysis time of this scheme is close to that of the multi-point constraint beam element method, which is about 50％ shorter than that of the full model. Finally, the simplified method of beam spring element combination proposed in this paper is used to analyze the flange connection node in the communication single pipe tower. Compared with the full model and scale reduction test, this method is proved to have strong applicability in the inner flange structure. |
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| 备注/Memo: | 收稿日期: 2022－11－30. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/基金项目: 国家自然科学基金（11972203, 11572162）; 浙江省自然科学基金（LY13A020007）; 宁波市自然科学基金（202003N4152）.第一作者: 尤建(1997－）, 男, 天津武清人, 在读硕士研究生, 主要研究方向: 高耸钢结构分析与优化. E-mail: 1270302656@qq.com*通信作者: 朱珏(1979－）, 女, 浙江金华人, 博士/教授, 主要研究方向: 冷弯钢结构稳定性分析. E-mail: zhujue@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
