Finite Element Analysis Of Rolling Bamboo

Natural bamboo fiber is made from bamboo directly.Its shape is similar to plant fiber.,which can replace wood fiber to make economic wallboard.Besides,bamboo fiber is the only cool type fiber at present,which has excellent properties such as green and environmental protection,as well as excellent mechanical properties,and can replace the production of fiber reinforced compositesAt present,the method of crushing bamboo to split fiber is the main method to product the long bamboo fiber.But now,on account of the hysteretic theoretical research,it is not clear that the specific fiber opening mechanism of bamboo and related mechanical parameters,which make the extraction of bamboo crude fibre at a low level.It is urgent to achieve the high efficiency and high quality production of splitting fiberIn this paper,we must find the method to quantitatively study the crushing and splitting of bamboo fiber by building the mesoscopic finite element mechanical model of bamboo.,in order to gain the mechanical parameters of milling fiber at the end.This paper is based on the characteristics of bamboo structure,and research the principle of the bamboo to split fiber under compression.By using the finite element method,we study and establish the finite element micro-mechanical model of milling fiber.Through comparing the analysis of the stress and strain change of bamboo fiber and substrate in the process of crushing fiber,it is clear that the results agree with the actual situation.The motion simulation of rolling process is very clear to simulate the rolling process of bamboo splitting fiber,The specific research content is:1.we measured the physical characteristics of the softened bamboo specimen through practical experiments,Then the physical parameters of bamboo and component materials were obtained2.Considering the bamboo as a composite material composed of vascular bundle and matrix,then we studied the influence about the microstructure of bamboo on the mechanical properties of bamboo wood.According to the load mode of rolled bamboo fiber,,we can make use of the ABAQUS simulation software to study the influence of different shape vascular bundles and arrangement on the mechanical properties of longitudinal stretch and longitudinal compression3.Studied the method of using bamboo to crush the fiber,and built a finite finite element mechanics model.In this paper,we did the research about the stress and strain change of bamboo fiber and substrate in the process of milling and fiber opening,and analyzed the influence of different feeding speed of bamboo material on rolling and fiber opening.4.According to the characteristics of bamboo laminated structure,we made a preliminary analysis of the growth and expansion of the bamboo fiber layers in the cracks in the fiber.Through research and analysis,the following conclusions are obtained:1.By finite element analysis,the mechanical parameters of circular fiber sections and hexagonal fibers are obtained,which are closer to the theoretical results2.We established finite element model of rolling open fiber,then got the change of stress and strain of the bamboo fiber and the matrix,which quantitatively explained the microscopic mechanism of the crushing and opening of bamboo fibers;Through the kinematics simulation of bamboo fiber opening process,we can clearly and intuitively see the process of substrate destruction.It is indicated that the finite element method proposed in this paper is feasible to study the crushing of bamboo fibers3.For the bamboo with 45%vascular bundle content after pretreatment,the minimum value is 60mm,which is taken by the diameter of the roller according to the Angle of bite,and when the horizontal initial speed of the bamboo is 30mm/s,a better rolling effect can be obtained.