Simulation Design And Optimization Of Embedded Parts Used In Poplar Laminated Plate

Poplar laminate is made of 3.6 mm thick of poplar veneer pressing into the five-layer structure laminate board, having a characteristic of low density and high strength, being an excellent material for making furniture. In order to improve the connecting strength of furniture, using the poplar laminated plate for furniture material, whose properties characterized by relatively low density and high strength, from basic mechanics to discuss the development of embedded part, and then to optimize through Finite Element Analysis and experiment, obtaining the design of the embedded part terminally. Thus this research posses some practical value, providing a reference for academic research, enriching and deepening the study of furniture connectors. In this study, the main conclusions are as follows:(1) Combined with material properties of embedded parts and poplar laminated board, the theory model of parameters of the embedded parts is established, which is as follows: 4(d1+2h)a1[σ2]p3-2(d1+2h)a12[σ2]p2-3d1a13[σ1]p+d1a14[σ1]= 0 designing the proposal.(2) Obtaining the elastic constants and density and other performance parameters in all directions of poplar laminates by test methods, provided with material properties for FEM simulation of embedded parts connected with poplar laminated board.(3) The maximum equivalent stress appears at the root of the thread of the first lap, with the increasing number of the thread, the thread force percentage of each circle and then click on the decrease when the poplar laminated board is connecting with the embedded part; Axial force percentage is gradually reduced of embedded parts first thread, when a certain number of laps to increase the number of turns screwed does not make a significant increase in nail holding power; Poplar laminates with embedded parts optimum parameters of 3.5,4.5 and 5.5 laps embedded parts, whose nail holding power simulation values of 5228.69 N,3450.54 N,2609.91 N.(4) Combining test and finite analysis to optimize the parameters of the embedded part, the withdrawal strength increased after structure optimization, the nail holding power of 3.5-lap embedded parts increased from 2128 N to 2366 N after optimizing,4.5-lap embedded parts increased from 2157 N to 2385 N,5.5-lap embedded parts increased from 2082 N to 2199 N, increased by 6% to 11%.(5) Nail holding power of Poplar laminates with embedded parts has improved significantly compared to the nylon nut and metal expansion nut, Poplar laminates with embedded parts nail holding power increased from 976 N to 2366 N, increased by 1409 N and 142% comparing to nylon nut; Poplar laminates with embedded parts nail holding power increased from 1517 N to 2366 N, increased by 849 N and 56% comparing to metal expansion nut.