摘要
含孔结构在工程结构中广泛存在,孔洞周围的应力集中显著影响结构的承载能力和安全性,因此对含孔结构进行精确的力学计算至关重要,但传统有限元分析方法在处理含孔结构时面临网格划分复杂、计算资源消耗大及结果收敛性差等问题。为此,提出了一种基于叠加原理的含孔结构有限元分析方法,通过生成网格简单的等效模型替代原始模型进行仿真计算,然后根据子模型应力场修正等效模型中孔周应力的计算结果。经过对比发现,等效模型与原始模型仿真结果差异在5%以内,主要模型网格数量降低了25.2%,仿真时间降低了75.1%,显著提高了仿真效率。
Perforated structures are commonly found in engineering applications,where stress concentration around holes significantly affects structural load-bearing capacity and safety.Therefore,accurate mechanical analysis of perforated structures is essential.However,the traditional finite element analysis methods face several challenges,including complex mesh generation,high computational resource requirements,and poor convergence when dealing with perforated structures.To overcome these challenges,a finite element analysis method based on the superposition principle is proposed.This approach replaces the original model with a simplified equivalent model featuring a less complex mesh for simulation.The stress field of sub-models is subsequently employed to correct the stress distribution around holes in the equivalent model.Comparative results indicate that the discrepancy between the equivalent model and the original model is within 5%.The equivalent model achieves a 25.2% reduction in mesh elements and a 75.1% reduction in simulation time,substantially improving simulation efficiency.
作者
黄玉玺
李成
薛清宸
陈栋
HUANG Yu-xi;LI Cheng;XUE Qing-chen;CHENDong(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《水电能源科学》
2025年第9期114-118,共5页
Water Resources and Power
基金
国家自然科学基金项目(12302106)
新华水利发电重点科研项目(XHKY2022-33)。
关键词
平面钢闸门
应力集中
网格生成
叠加法
有限元仿真
planar steel gate
stress concentration
mesh generation
superposition method
finite element simulation
作者简介
黄玉玺(1996-),男,硕士研究生,研究方向为结构仿真,E-mail:yuxi0136@163.com;通讯作者:陈栋(1990-),男,博士、副教授、硕导,研究方向为结构仿真、边界元方法、复合材料,E-mail:chen.dong@zzu.edu.cn。
