Sensitivity analysis of shape design variables for periodic cell structure based on SiPESC

Xinfeng E; Biaosong Chen

doi:10.1117/12.3008227

25 October 2023 Sensitivity analysis of shape design variables for periodic cell structure based on SiPESC

Xinfeng E, Biaosong Chen

Proceedings Volume 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023); 128013G (2023) https://doi.org/10.1117/12.3008227
Event: Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 2023, Dalian, China

Abstract

Composite materials are widely used in important fields such as aerospace, automobiles, engineering machinery, and architecture. The macroscopic properties of composite materials depend on the micro unit cell form the composite material. To design a composite material with special properties, it is necessary to design the unit cell structure of the composite material. In shape optimization, a crucial piece of information in the optimization process is the sensitivity of the structure's state response to design variables. Therefore, the efficient sensitivity solving methods are crucial for the design of composite cellular structures. With the self-developed numerical simulation software platform SiPESC, the geometric parameterization modeling of the unit cell model is carried out. An improved semi-analytic sensitivity analysis method is used to make the perturbation more accurate through mapping between the geometric surfaces and element nodes, and between element nodes and elements. The sensitivity calculation efficiency becomes higher by using the local element to solve the sensitivity. The verification of typical cases shows that the algorithm in this paper meets the accuracy requirements compared with the global difference method.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinfeng E and Biaosong Chen "Sensitivity analysis of shape design variables for periodic cell structure based on SiPESC", Proc. SPIE 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 128013G (25 October 2023); https://doi.org/10.1117/12.3008227

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KEYWORDS

Design and modelling

Shape analysis

Modeling

Finite element methods

RGB color model

Matrices

Composites

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