Study On Mechanical Properties Of Eccentric Compression Members Of Integrated Material By Corn Stalk Recombined Material

Our country has a vast territory and abundant products,especially wood resources.However,with economic development,wood and wood products are used more and more widely,and resources are beginning to be relatively tight.At the same time,in order to protect the environment and save forest resources,the state has issued a series of forest protection policies,which highlights the contradiction between the supply and demand of forests and has become an urgent problem to be solved.Forest resources are in short supply,and the demand for wood and wood products is increasing day by day.Under this contradiction,wood substitute structure,due to its green environmental protection,sufficient raw materials,and renewable characteristics,has become an important development trend.Due to the excellent properties of integrated material by corn stalk recombined marerial,such as rich resources,high strength,fire resistance and corrosion resistance,it can be used as a new type of wood substitute structural material to solve the problems of shortage of wood resources,low utilization rate of straw resources,and environmental pollution caused by straw burning.The application prospect is broad.In this paper,the integrated along parallel grain,integrated along vertical grain,and integrated along combination grain of integrated material by corn stalk recombined marerial are used as the research object.Using ABAQUS finite element simulation analysis and experimental research methods,the failure state and failure mechanism of the components under eccentric load are analyzed,and the integration of integrated material by corn stalk recombined marerial is determined.The optimal integration method and design principles of eccentric compression members of materials provide reliable theoretical support for follow-up research and engineering applications.In this paper,the eccentric compression test of three integration methods of integrated material by corn stalk recombined marerial was carried out,and the test data of each integration method was obtained.By comparing the failure modes and ultimate bearing capacity of eccentric compression members with three integration methods,the load-longitudinal displacement,load-lateral displacement and load-strain relationship curves of different components are analyzed,and the integration method,constraint conditions and other factors on eccentricity are discussed.The ultimate bearing capacity of the column under pressure and the influence of its failure mechanism.Using ABAQUS finite element simulation analysis software,the finite element analysis model of integrated material by corn stalk recombined marerial test component was established,and the stress distribution cloud diagram,displacement distribution cloud diagram,load-displacement curve,load-strain curve and ultimate bearing capacity of the component were obtained.The results of test data and simulation data verify the feasibility of finite element simulation analysis,and further explore the influence of different integration methods and constraint conditions on the ultimate bearing capacity of eccentric compression of integrated material by corn stalk recombined marerial.Combining test and simulation data,analyze the failure mechanism of the components,and finally determine the optimal integration method and design principles of the eccentric compression components of the integrated material by corn stalk recombined marerialThe research results show that under the eccentric action of integrated material by corn stalk recombined marerial eccentric compression members,there are three types of failure: strength failure and instability failure,and split failure is the main failure phenomenon of eccentric compression members strength failure.When the eccentric load of the integrated material by corn stalk recombined marerial eccentric compression component reaches the ultimate load,most of the components undergo brittle failure without obvious plastic deformation.Although the material has a certain elasticity and plasticity under compression,it is generally a brittle material.By comparing and analyzing the test data and the simulation data,it can be obtained that the ultimate bearing capacity of the eccentric compression column i integrated along parallel grain is the highest,and the load curve changes more regularly,which has good predictability.Therefore,the parallel pattern integration of the compressed columns of c integrated material by corn stalk recombined marerial is the optimal integration method.Tests show that the component with fixed ends has larger bearing capacity and smaller deflection than the hinged-supported component at both ends.Therefore,the constraint conditions have an influence on the bearing capacity of the biased component.In the test and practical application,attention should be paid to it.Component constraints.This paper studies the mechanical properties of eccentric compression members using integrated material by corn stalk recombined marerial as the material,compares the failure mechanism and ultimate bearing capacity of different integration methods,clarifies the functions,advantages and disadvantages of different integration methods,and it will provide a theoretical basis and design basis for the future experimental research and practical application of integrated material by corn stalk recombined marerial,and popularize and apply this new green and environmentally friendly wood substitute material.