基于3D Scan的木地板锁扣有限元模型静力学分析  

Static analysis of finite element model of wood flooring lock based on 3D scanning

作　　者：贾娜[1] 刘曼曼 花军[1] 毛磊[2] 白雪[2] 

机构地区：[1]东北林业大学机电工程学院 [2]黑龙江省木材科学研究所木材综合利用重点实验室

出　　处：《北京林业大学学报》2017年第11期98-105,共8页Journal of Beijing Forestry University

基　　金：黑龙江省森林工业总局应用研究项目(sgzjy2015006);黑龙江省基本科研业务费项目(HCZ201601);黑龙江省教育科学规划课题(GJB1214003)

摘　　要：木地板连接中锁扣起到了关键作用,为探索不同锁扣形式对木地板力学性能的影响,以强化地板锁扣为研究对象,以锁扣有限元模型的静力学特性为研究目标,利用三维扫描仪获取嵌入锁定和本体锁定两类强化地板12种典型锁扣的三维点云数据、逆向重构锁扣的三维实体模型,分析其结构特点,确定影响锁扣力学性能的结构特征值;采用有限元软件ANSYS对锁扣有限元模型进行弯曲和拉伸载荷作用下的整体变形、等效应力、等效应变的仿真分析,研究强化地板锁扣的静力学特性。结果表明:两类锁扣结构中,锁扣结合面长度、榫头(槽)凸(凹)出长度等参数与结合面形状是影响锁扣力学性能的主要因素;嵌入锁定锁扣具有更加优越的整体性能,受锁扣自身结构形状影响小,受锁定元件形状影响较大;本体锁定锁扣结构中,大的弧形锁扣截面形状更有利于提高锁扣的力学性能。通过三维扫描逆向重构锁扣模型以及对木地板锁扣结构和功能相关性的分析,为锁扣的设计、优化和检测提供了新的思路。This study aims to investigate the effects of different forms of locks on the mechanical properties of wood flooring, in which the lock plays a key role to the connection. The laminate flooring lock structure was investigated, and the static characteristics of finite element model of the lock structure was taken as the research objective. By means of 3D scanner, the 3D point cloud data of 12 kinds of typical lock structures including embedded lock and body lock were acquired. The 3D solid model of lock structure was reversely reconstructed, and the characteristics of lock structure were analyzed to determine the structure eigenvalues affecting the mechanical properties of the lock. The finite element software ANSYS was used to analyze the finite element models of the total deformation, the equivalent stress, the equivalent strain under bending or tensile loads, and to study the static characteristics of the wood flooring lock. The results showed that the mechanical properties of the lock were most affected by locking junction length, the tenon/groove （convex/concave） length and joint surface shape. The embedded lock performed better overall properties than the body lock, as it was less affected by the shape of the lock but most affected by the shape of the locking element. In a body lock structure, the shape of a large arc lock section is beneficial to the improve the mechanical properties. The study provides a new approach to design, optimize and test the flooring lock.

关 键 词：锁扣 三维扫描 有限元法 木地板 静力分析 

分 类 号：S784[农业科学—林学] O312[理学—一般力学与力学基础]