Dynamic Simulation Of Carbon Fiber Reinforced Laminated Veneer Lumber Based On The Finite Element Method

The problem that how to efficiently and reasonably utilize the existing timber resources to develop the maximum potential is chronically needed to solve for wood research. Due to laminated veneer lumber with promotional efficiency, stable structure and flexible specifications, laminated veneer lumber is widely used in furniture manufacturing, indoor decoration and door frame for decades. But as the modern construction industry and social demand constantly promotes, the laminated veneer lumber with high strength, light weight and functionality has become more and more urgent. The development of computer aided modeling and simulation technology provides effective methods towards new materials and product research, which shorten the cycle of product upgrading and become a powerful booster in composite development.First of all, the preparation technology of carbon fiber cloth reinforced laminated veneer lumber (CFRLVL) was experimentally investigated. The layer location and layer number of carbon fiber cloth were selected as the experimental factors, and the influence on shear strength, modulus of rupture and modulus of elasticity to carbon fiber reinforced laminated veneer lumber was inquired using mechanical test. The investigation shows that with layer position changes from inner to outer, the modulus of rupture (MOR) is significantly enhanced; With layer number changes from single-layer to double-layer, the shear strength, modulus of ruptureare and modulus of elasticity are differentially enhanced. After that, the 3-D geometry model and finite element model were established for carbon fiber reinforced laminated veneer lumber based on the experimental data analysis and the finite element method. The structure static simulation analysis was implemented based on the finite element model. The simulation result and experimental test result is consistent, which indicates that the finite element model is accurate and feasible.Finally, On the basis of the finite element model, the dynamic simulation research was implemented for carbon fiber reinforced laminated veneer lumber in ANSYS Workbench 15.0 simulation environment The first six order natural frequency and modal data were extracted for the carbon fiber reinforced laminated veneer lumber to explore the influence of layer location and layer number of carbon fiber cloth on inherent frequency and vibration model by modal analysis technology. The results show that with layer position changes from inner to outer, the growing rate for inherent frequency gradually increases; with layer number changes from single-layer to double-layer, the maximum deformation gradually decreases. The simulation results show that natural frequency and natural mode for CFRLVL is respectively affected by the layer location and layer number as a key factor. The three-dimensional finite element model and dynamic simulation study constructed in the paper provide the basic condition for CFRLVL modeling study, and the data support for dynamic structure optimization design, which have an important practical significance on accelerating and expanding the development process and application field for the CFRLVL.