摘要
榫卯结构是我国传统文化的精髓,被广泛应用于古木建筑和家具中.然而,古木家具榫卯结构的现有修复方案和研究大多依赖于工匠经验、实验或数值模拟,缺乏简单理论指导修复.本文基于3D打印技术制备了T型榫卯试件,获取了榫卯拔出力-拔榫量的实验曲线;通过分析榫卯响应曲线变化和榫头受力特点,建立了榫卯拔出力的双阶段解析模型,由此结合有限元方法研究了过盈配合量对结构抗拔极限的影响.预测结果不仅重现了相应拔榫实验和有限元模拟的结果,还揭示了接触界面静动摩擦转换对榫卯结构抗拔极限的决定性机理.
Mortise-tenon structure is the essence of Chinese traditional culture,which is widely used in ancient wooden buildings and furniture.However,the existing restoration schemes and research of ancient wood furniture mortise-tenon structure mostly rely on artisan experience of craftsmen,experiments or numerical simulations,lacking simple theoretical guidance for restoration.This paper fabricated T-shaped mortise-tenon specimens using 3D printing technology,and obtained the experimental curve of the pullout force versus the pull-out distance of these specimens.By analyzing the changes in the mortise-tenon response curve and the stress characteristics of the tenon head,a two-stage analytical model for the mortise-tenon pull-out force is established.Based on this,the influence of the interference fit on the structural pull-out limit is studied using finite element method.The predicted results not only reproduce the corresponding pull-out experimental and finite element numerical results,but also reveal the decisive mechanism of the static-dynamic friction conversion at the contact interface in determining the ultimate bearing capacity of the mortise-tenon structure.
作者
张浩淼
刘翰林
马如高
张能辉
ZHANG Haomiao;LIU Hanlin;MA Rugao;ZHANG Nenghui(Shanghai Institute of Applied Mathematics and Mechanics,Key Laboratory of Mechanics in Energy Engineering,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China;Shanghai Museum,Shanghai 200003,China)
出处
《力学季刊》
北大核心
2025年第2期340-348,共9页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(12172204,11772182,11272193,10872121)
大学生创新创业训练计划(202010280S210)。
关键词
文物保护
榫卯结构
抗拔极限
解析模型
有限元法
preservation of cultural relics
mortise-tenon structure
pull-out resistance limit
analytical model
finite element method
