Ply-overlap Fiber Reinforced Plastic Connection Structure Design and Discrete Optimization

doi:10.3901/JME.2021.07.194

Abstract

Abstract: Multi-phase discrete design is based on the specific structure of the part, through anisotropic material distribution, to obtain an ideal optimization design method. Aiming at the reliability connection problem between adjacent design domain joints in the current discrete design method, a structure form of splicing ply is proposed, which provides a new method for structural component design domain connection. Combining the discrete materials design and the splicing laminating structure, considering the influence of splicing joints on the overall performance of the parts, a discrete layer optimization system for composite materials is established. Taking the vehicle back door model as an example, the accuracy of the established optimization model is verified by comparison between experiment and simulation. At the same time, through the introduction of composite-related manufacturing constraints and material interpolation models in the optimization process, the optimization design results have a good implementation. Applying this layer optimization design system, the mass of target automobile back door assembly is further reduced by 28.0% compared with the traditional composite material layer design. On the basis of ensuring the performance index of the parts, a more ideal lightweight implementation is realized.

Key words: composite materials, ply-overlap, connection structure, discrete design and optimization, lightweight

CLC Number:

U463

NIE Xin, NAN Bo. Ply-overlap Fiber Reinforced Plastic Connection Structure Design and Discrete Optimization[J]. Journal of Mechanical Engineering, 2021, 57(7): 194-203.

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