The Model Theory on Structural Mechanics of Cell Disruption Force in the Preparing Process of Superfine Wood-Flour with Cryptomeria fortunei

Abstract:

In the process of preparing superfine wood-flour with physical method, when the size of wood-flour particle reaches to the corresponding level, a single wood cell will be destroyed. In the process of analyzing micro-nano wood-flour’s cutting power, the process of cell disruption of the wood cell needs to be computed. Based on the relevant theory of finite element and structural mechanics, this article builds a structure mode of 12 lever hexagon truss model to simulate the cellular structure. There are 6 levers outside to simulate the cell and 6 levers inside to simulate the internal pressure. This establishes a single cell stress model to analyze its stress. It can be obtained that when the size of the force acting on the node reaches the unit force, the minimum tensile stress of the bar element is bigger than the macroscopic tensile strength of the wood. According to the structural characteristics of the cell wall, this paper compares the tensile stress along the grain of the bar element with the tradition cutting stress. Using tensile strength as the criteria to test the rupture failure of Cryptomeria fortunei cell, the wood cell’s disruption force can be concluded. When preparing superfine wood-flour with Cryptomeria fortunei as experimental raw materials, the calculated results of applying the traditional cutting theory to calculate the cutting force has proved the analysis structure of Cryptomeria cell micromechanics with the method of finite element and structural mechanics, so that it can be concluded that certain cutting force can make Cryptomeria fortunei cells disruption.

• Periodical: Advanced Materials Research (Volumes 393-395)
• Pages: 453-457
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.393-395.453
• Online since: November 2011
• Authors: Dong Xia Yang, Yan Ma, Chun Mei Yang
• Keywords: Cell Disruption, Structural Mechanics, Superfine Wood-Flour, Truss

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