非对称铺层T700复合材料层合板铺层顺序优化

为分析经过铺层顺序优化后的复合材料层合板的承载能力,基于有限元优化设计软件,构建碳纤维复合材料层合板有限元模型,施加边界条件与轴向载荷,进行力学性能分析;以碳纤维复合材料层合板铺层顺序为设计变量,以层合板主应变、连续角度铺层不超过四层等为约束条件,最大承载能力为设计目标,对层合板进行优化;并对优化后的层合板基于强度理论进行校核,结合力学试验对比分析优化前后的层合板力学性能差异.结果表明:碳纤维复合材料层合板铺层顺序经过优化后,承载能力增强,试验结果与仿真结果具有一致性,优化方法是合理可靠的.

Optimization of stacking sequence of asymmetrical ply T700 composite laminates

In this paper, based on the finite element optimization design software, the finite element model of carbon fiber composite laminates is constructed, and the boundary conditions and axial loads are applied to analyze the mechanical properties of carbon fiber composite laminates. The stacking sequence of carbon fiber composite laminates is taken as the design variables, and the main strain and continuous angle ply are not more than four layers, the maximum bearing capacity is taken as the design objective to optimize the laminate; based on the strength theory, the optimized laminates are checked based on the strength theory, and the mechanical properties of the optimized laminates are compared and analyzed. The results show that the bearing capacity of the carbon fiber composite laminates is enhanced after the optimization of the stacking sequence. The test results are consistent with the simulation results, and the optimization method is reasonable and reliable.