电缆埋入复合材料组件力学性能分析及优化研究

Analysis and optimization of mechanical properties of cable embedded components

针对复合材料埋入电缆后力学性能的变化,基于电缆与复合材料一体化成型机理,采用理论分析结合有限元仿真分析法,分析电缆埋入复合材料后对构件应力分布的影响,然后利用改进的遗传算法对构件参数进行优化设计。研究结果表明,电缆直径增大,构件受载后的应力值也随之增大;电缆位于构件几何中心时,构件的力学性能最佳;电缆间距较小时,应力集中较明显。基于数学关系模型,利用改进遗传算法得到的优化工艺参数为:单层铺层厚度0.20 mm,埋入电缆直径0.60 mm,绝缘层厚度0.06 mm,电缆中心与构件边缘距离3.5 mm。根据构件结构参数最优组合值求解出的最大剪切应力为496.92 MPa。研究结果对于提高埋入电缆后的构件性能具有重要工程借鉴意义。

Aiming at the change of mechanical properties of the composite material embedded in the cable,combined with the integrated molding mechanism of three-dimensional cable and composite material,the influence of the cable embedded in the composite material on the stress distribution is analyzed by theoretical analysis and finite element simulation analysis method,and then the improved genetic algorithm is used to optimize the mechanical properties of the cable assembly.The results show that with the increase of the diameter of the embedded cable,the stress value increases and the bearing capacity decreases after the component is loaded.When the cable is embedded in the geometric center,the best mechanical properties of the components are obtained.When the cable embedded distance is small,the bending stress of composite components is larger,and the stress concentration phenomenon is more obvious.According to the mathematical relationship model between the structural parameters and the maximum shear stress,genetic algorithm is used to optimize it.The optimized process parameters are as follows:the thickness of the composite single layer is 0.20 mm,the diameter of the embedded cable is 0.60 mm,the thickness of the insulation layer is 0.06 mm,and the distance between the center and the side of the embedded cable is 3.5 mm.According to the optimal combination of structural parameters,the maximum shear stress is 496.92 MPa.The research results have important engineering significance for improving the mechanical properties of cable components.