Study On The Mechanical Property Of Composite Materials Component With Embedded Cable And Design Optimization

Resin-based fiber-reinforced composites have the advantages of high strength,high temperature resistance,light weight,strong corrosion resistance,fatigue resistance,and design ability.It has become one of the base materials for aerospace aircraft,medical equipment,and ships and other equipment.With the rapid development of intelligent material systems and structural technologies,traditional single materials and functional structures are not enough to meet the requirements,and gradually develop into multi-functional structural materials.The integrated component formed by embedding the cable in the composite material can not only solve the problems of the narrow space of many equipment,causing difficulties in cable wiring,redundant cable sizes,etc.,so as to achieve the integration and miniaturization of equipment,but also make use of the original composite materials mechanical properties.However,embedding the cable in the composite material will cause a resin-rich area with an "eye" shape in the structure,resulting in discontinuities in the overall structure,which will have a certain impact on the mechanical properties of the composite material,thereby affecting the reliability of the structure.Based on the sample design requirements of related scientific research projects,this paper takes composite components embedded in cables as research objects,and studies the influence of component parameters on the mechanical properties of composite components embedded in cables.The content and conclusion are as follows:1.The bending properties of composite materials embedded in cables are studied from the perspective of cable embedded composite materials with different layup angles and different component parameters.Using ANSYS finite element software to establish a finite element analysis model of composite material components embedded in cables,the finite element model of cable embedded components with five different layering angles was established,and select the three parameters of cable embedding position,cable diameter,and cable spacing of the component,perform single-factor simulation analysis under bending load to study its bending performance.The results show that when the cable is buried in a composite material with a ply angle of 0°,the maximum bending stress on the component is the smallest,and the deflection generated by the overall component is also the smallest;the bending stress of the component gradually increases;as the diameter of the embedded cable increases,the bending stress of the component also increases;and as the cable spacing increases,the bending stress of the component gradually decreases.2.According at the selected three parameters of the cable embedding position,cable diameter,and cable embedding distance,the response surface method was used to simulate and optimize the parameters of the composite material embedding the cable.According to the designed test scheme,the bending simulation analysis is performed for each group of tests,and the bending stress of the component is obtained.Based on the test results,a mathematical relationship model between the component parameters and the bending stress of the cable embedded composite material component is constructed.With the objective of minimizing the bending stress of the component,the relationship between the component parameters and the bending stress of the cable-embedded composite material component was analyzed using genetic algorithms,and the optimization of the component parameters was performed to obtain the optimal cable-embedded composite material component Parameter combination: cable buried position 0mm;cable diameter 0.67mm;cable buried pitch 5mm.The corresponding finite element model is established based on the optimized component parameter combination.Under bending load,the maximum bending stress of the component is 18.467 MPa,and the relative error with the genetic algorithm optimization result is 2.32%.3.The tensile properties of composite members embedded in cables are simulated and analyzed.The ANSYS finite element software was used to establish the tensile finite element analysis model of the composite member embedded in the cable,by selecting the cable embedment position,cable diameter,and cable spacing of the component,the three parameters were performed under tensile displacement loading conditions,single-factor simulation analysis to study its tensile properties.The results show that: the maximum tensile stress occurs at the interface between the cable and the composite material,where the component is prone to failure;as the cable is buried closer to the composite surface,the tensile stress of the component gradually increases;as the diameter of the incoming cable increases,the tensile stress of the component also increases;as the cable spacing increases,the tensile stress of the component gradually decreases.Orthogonal test design method was used to design a three-factor and four-level orthogonal test scheme for three structural parameters: cable embedding position,cable diameter,and cable embedding distance.According to the designed scheme,the simulation analysis is performed for each group of tests to obtain the tensile stress of the members of each group of tests,and the results are analyzed for the validity and range of the test data,the influence of the component parameters on the tensile stress of the composite component embedded in the cable is in the order of the cable embedding position > cable spacing > cable diameter.The research results have been applied to the sample design of related scientific research projects,and provide a certain theoretical basis for the design of cable embedded composite material components.