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基于3D Scan的木地板锁扣有限元模型静力学分析

贾娜 刘曼曼 花军 毛磊 白雪

贾娜, 刘曼曼, 花军, 毛磊, 白雪. 基于3D Scan的木地板锁扣有限元模型静力学分析[J]. 北京林业大学学报, 2017, 39(11): 98-105. doi: 10.13332/j.1000-1522.20170223
引用本文: 贾娜, 刘曼曼, 花军, 毛磊, 白雪. 基于3D Scan的木地板锁扣有限元模型静力学分析[J]. 北京林业大学学报, 2017, 39(11): 98-105. doi: 10.13332/j.1000-1522.20170223
JIA Na, LIU Man-man, HUA Jun, MAO Lei, BAI Xue. Static analysis of finite element model of wood flooring lock based on 3D scanning[J]. Journal of Beijing Forestry University, 2017, 39(11): 98-105. doi: 10.13332/j.1000-1522.20170223
Citation: JIA Na, LIU Man-man, HUA Jun, MAO Lei, BAI Xue. Static analysis of finite element model of wood flooring lock based on 3D scanning[J]. Journal of Beijing Forestry University, 2017, 39(11): 98-105. doi: 10.13332/j.1000-1522.20170223

基于3D Scan的木地板锁扣有限元模型静力学分析

doi: 10.13332/j.1000-1522.20170223
基金项目: 

黑龙江省教育科学规划课题 GJB1214003

黑龙江省基本科研业务费项目 HCZ201601

黑龙江省森林工业总局应用研究项目 sgzjy2015006

详细信息
    作者简介:

    贾娜,副教授。主要研究方向:木制品加工技术。Email:jiana@nefu.edu.cn  地址:150040 黑龙江省哈尔滨市香坊区和兴路26号东北林业大学机电工程学院

    责任作者:

    花军,教授,博士生导师。主要研究方向:木材加工装备。Email:huajun81@163.com  地址:同上

  • 中图分类号: S784;O312

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

  • 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。

     

  • 图  1  强化地板锁扣各组成结构实体模型图

    Figure  1.  Structure solid models of laminate flooring lock

    图  2  强化地板锁扣的装配模型

    H为强化地板厚度,a为锁扣结合面长度,b为榫头内凹/凸出的长度,c为榫头内凹/凸出上边线到地板上表面的长度,d为榫头厚度,e为榫头下部内凹深度。

    Figure  2.  Assembly model of laminate flooring lock

    H is the thickness of laminate flooring, a is the locking juction length, b is the concave/convex length of tenon, c is the length from the top line of the concave/convex tenon to the flooring surface, d is the thickness of the tenon, e is the depth of the lower part in concave tenon.

    图  3  网格划分后的木地板锁扣有限元模型

    Figure  3.  Finite element model of wood flooring lock after meshing

    图  4  地板锁扣受载荷和约束示意图

    F为集中应力;L为支点距锁扣中心线距离。

    Figure  4.  Schematic diagram of flooring lock under load and constraint

    F is the concentrated stress, L is the distance between the fulcrum and either side of the center line of the lock.

    图  5  弯曲载荷作用下的模拟图

    Figure  5.  Simulation diagram under bending load

    图  6  锁扣弯曲变形整体变形的最大值图

    Figure  6.  The maximum total deformation of the lock under bending load

    图  7  锁扣弯曲变形等效应变的最大值图

    Figure  7.  The maximum equivalent strain of the lock under bending load

    图  8  锁扣弯曲变形等效应力的最大值图

    Figure  8.  The maximum equivalent stress of the lock under bending load

    图  9  水平拉伸载荷作用下的模拟图

    Figure  9.  Simulation diagram under horizontal tensile load

    图  10  水平拉力下整体变形的最大值图

    Figure  10.  The maximum total deformation of the lock under horizontal tensile load

    图  11  水平拉力下等效应变的最大值图

    Figure  11.  The maximum equivalent strain of the lock under horizontal tensile load

    图  12  水平拉力下等效应力的最大值图

    Figure  12.  The maximum equivalent stress of the lock under horizontal tensile load

    表  1  12种锁扣截面形状与结构特征值

    Table  1.   Section shapes and structure characteristics of 12 kinds of locks

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  • 收稿日期:  2017-06-26
  • 修回日期:  2017-09-25
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