基于CEL方法的瓷砖智能化铺贴质量数值分析

Numerical analysis on the intelligent installation quality of ceramic tiles based on CEL method

基于耦合的欧拉-拉格朗日方法(CEL方法)建立瓷砖-瓷砖胶-混凝土流固耦合施工模型,模拟研究机器人的布料方式、布料管数和荷载类型对瓷砖回弹量、接触面积、缺陷分布等铺贴质量指标的影响规律和机理。研究结果表明:与垂直布料相比,水平布料瓷砖胶的塑性变形较小,胶条形态保持稳定且呈等间距分布。布料管数增加对瓷砖回弹量与接触面积均无影响,但会使瓷砖-瓷砖胶的界面缺陷明显变窄且分布更加均匀。相较于单一的直压荷载,耦合垂直振动荷载引起的不均匀塑性变形导致瓷砖回弹量和瓷砖-瓷砖胶接触面积同时降低;而耦合剪切振动荷载既有利于消除瓷砖回弹量又能显著增大瓷砖-瓷砖胶接触面积,有效减少界面缺陷。

Fluid-structure coupling construction models of a tile-adhesive-concrete system were developed based on the coupled Eulerian-Lagrangian method(CEL method).The pattern of adhesive application,rows of adhesive application and type of tile leveling loads of a robot were simulated,and their influence law and mechanism on the indices of installation quality including tile resilience value,contact areas and defect distribution were investigated.The results show that the adhesive with horizontal application possesses smaller plastic deformation,keeps stable shape of strips and distributes at equal spacing,compared with the one with vertical application.Increasing rows of mortar extrusion has little effects on the tile resilience value and contact areas,but leads to an obviously narrower defect of tile-adhesive interface with a more uniform distribution.Compared with a single compression load,its coupling with vertical vibration causes inhomogeneous plastic deformation and hence decreases the resilience value of tile and the tile-adhesive contact area.In contrast,the coupling of shear vibration with compression is beneficial to the reduction of tile resilience value and remarkably increases the tile-adhesive contact area,and reduces the interfacial defect effectively.