| Wood is a natural,environmental and green building materials,wood structures are not only easy to design,more earthquake-resilient,but are also better bearing capacity and smaller self-weight under the tension and compression load,all these advantages make wood structure widely used in daily life.With the increasing shortages of global forest resources,how to scientifically and rationally use wood,and improve the utilization of wood,has become a central issue for forestry researchers.Larch is one of the most common and widely distributed species in Northeast China,The Larch timber shows good water resistance,anti-corrosion and higher bending strength,so it is the best conifer in the northeast region.Larch is a good wood material,suitable for the production of wood,bridges,drainage pipes,etc.,it also be used in ladders,poles,flooring,wood processing and other industries.Aiming at the problem of low yield timber products of M company,this paper select the larch timber as the research objective.firstly,the parameters required for the analysis of larch timber were obtained through experiments,and then the rectangular cantilever beam with different length and different aspect ratio was simulated by ANSYS software in order to determine the optimal structure under the same load,the same material and the same volume of material.Then on the base of these,this paper studies a variable cross-section cantilever beam which has higher bending strength and smaller deformation.Finally the finite element static analysis results as constraints of optimization design,through the optimization design module of ANSYS software,Zero-Order method and First-Order method was used to optimize the structure,get the best beam section size and higher outturn rate,and the recycling of remainder is analyzed,which improve effectiveness and bring good economic benefits for M company.All these exploration and researches provide valuable references and inspiration for timber related industries. |
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