Bio-Inspired Feature-Driven Topology Optimization for Rudder Structure Design

Jihong Zhu 1, 2, 3, Email

Yubo Zhao 1 

Weihong Zhang 1, 2, Email 

Xiaojun Gu 3 

Tong Gao 1, 3

Jie Kong 4

Guanghui Shi 5

Yingjie Xu 1, 2

Dongliang Quan 5

1 State IJR Center of Aerospace Design and Additive Manufacturing, School of Mechanical Engineering, Northwestern Polytechnical University, Xian, Shaanxi 710072, China

2 MIIT Lab of Metal Additive Manufacturing and Innovative Design, NPU-QMUL Joint Research Institute, Northwestern Polytechnical University, Xian, Shaanxi 710072, China

3 Institute of Intelligence Material and Structure, Unmanned System Technologies, Northwestern Polytechnical University, Xian, Shaanxi 710072, China

4 Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University, Xian, Shaanxi 710072, China

5 Beijing Aerospace Technology Institute, Beijing 100074, China

Abstract

A fish operculum bone is a high-efficiency load-carrying structure, which transfers the surface pressure of the fluid through the special supporting structures on the thin-walled panel to the joint position connecting the body. In order to bring this concept of bionic structures into the flight vehicle rudder structures’ optimization design, problems such as the structural feature and parameterized modeling, load-carrying behaviors analysis, optimization design method, performance evaluation etc. need to be properly solved. To this end, we studied the operculum structure and found that the properly distributed Y-shape structural branches undertake the surface load perfectly. Meanwhile, the influence of these Yshape branches distribution was discussed with numerical simulation and topology optimization. By considering the Y-shape branches as a special structural features, the bio-inspired design procedure was then established by integrating the structural layout and sizing parameters as well as their simultaneous feature-driven optimization. We also designed a typical flight vehicle rudder structure and fabricated it with stereolithography based resin additive manufacturing. With more than 20 % improvement in stiffness and strength compared with the traditional design, the advantages of the bio-inspired optimization have been clearly demonstrated.

Bio-Inspired Feature-Driven Topology Optimization for Rudder Structure Design