Development of evolutionary structural optimization design under kinematics and control system

运动学与控制系统下的演化结构优化设计研究进展

• 批准号: 13450091
• 负责人: OKUMA Masanki
• 金额: $ 9.73万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450091/
• 关键词: Structural Optimization; Structural Dynamics; Structure of dragonfly; Light-weight and Stiffening Design; Precise Finite Element Modelling; Nonlinear Optimization; Vibration Control; Connecting Rod; 軽量高剛性設計; 機械力学; 最適設計法; 振動制御; 騒音制御; 自動有限要素モデル

The purpose of this research is to develop a new evolutionary structural optimization design methods under kinematics and control system and, in addition, to investigate the structural advanced feature of dragonflies from the viewpoint of structural dynamics. New evolutionary structural optimization methods for static and dynamics have been developed. Then, their advantages and practical usefulness have been investigated using some kinds of basic application studies. This research has published some valuable technical papers and reports and has eventually obtained a ph.D degree to a graduate student of ph.D course who contributed to this research project The dependency problem of initial structures was deeply investigated and was made weak to optimum solutions. This investigation invented the new evolutionary structural optimization. Therefore, the method steadily creates very good results. A cantilever model, a bridge model and a connecting rod in engine etc. were optimally designed by the methods and their good results were obtained. In addition, a health monitoring system is developed as a kind of artificial nerve system for mechanical structural systems. Because the structures to be designed by such evolutionary optimization methods should be implemented such self-monitoring systems. Very precise investigation of dragonfly wings was carried out from the viewpoint of str-uctural dynamics. Vibration testing gave the fundamental natural frequencies and natural modes of the wings. Vein network pattern was accurately measured using a digital microscope and a finite element model of a dragonfly wing was created. The finite element model is available for various computer simulation studies. Finally, the result of this research will be able to create the possibility and usefulness of future development on this sort of research works to the investigators and others

本研究的目的是发展一种新的运动学与控制系统下的渐进结构优化设计方法，并从结构动力学的角度研究蜻蜓的结构先进性。发展了新的静态和动态渐进结构优化方法。然后，他们的优点和实际用途进行了调查，使用一些基本的应用研究。本研究发表了一些有价值的技术论文和报告，并最终获得了博士学位，博士课程的研究生谁贡献了这个研究项目的初始结构的依赖性问题进行了深入的研究，并取得了弱的最优解。这项研究发明了新的渐进结构优化。因此，该方法稳定地产生非常好的结果。用该方法对悬臂梁模型、桥梁模型和发动机连杆等进行了优化设计，取得了良好的效果。此外，开发了一种机械结构系统的健康监测系统，作为一种人工神经系统。因为要设计的结构，这种渐进优化方法，应实施这种自我监测系统。本文从结构动力学的观点出发，对机翼进行了非常精确的研究。振动测试给出了机翼的基本固有频率和固有模态。使用数字显微镜精确测量静脉网络图案，并创建了一个机翼的有限元模型。有限元模型可用于各种计算机模拟研究。最后，本研究的结果将能对研究者及其他人创造此类研究工作未来发展的可能性与有用性

项目成果

Woo Young Kim, Takeshi Nakahara, Masaaki Okuma: "An Evolutionary Optimization Method for Designing Three-Dimensional Structures"Proceedings of the 5^<th> World Congress on Structural and Multi-disciplinary Optimization. (2003)

Woo Young Kim、Takeshi Nakahara、Masaaki Okuma：“设计三维结构的进化优化方法”第五届结构与多学科优化世界大会论文集。

Takeshi Nakahara, Masaaki Yamamoto, Yusuke Ohya, Masaaki Yamamoto: "Bolt loosening detection using vibration characteristics of thin plate with piezoelectric elements,"Proceedings of SPIE Vol.5391, Sensors and Smart Structures Technologies for Civil, Mech

Takeshi Nakahara、Masaaki Yamamoto、Yusuke Ohya、Masaaki Yamamoto：“使用带有压电元件的薄板的振动特性进行螺栓松动检测”，SPIE Vol.5391 论文集，民用、机电传感器和智能结构技术

Taro Tomatsu: "Identification and prediction of F-shape structure dynamics by spatial matrix identification method"CD-ROM proceedings of ISMA2002. (CD-ROM). (2002)

户松太郎：《利用空间矩阵识别方法识别和预测F型结构动力学》ISMA2002年CD-ROM论文集。

Naoto Fuse, Masaaki Okuma, Jin-Young Jeon, Takeshi Nakahara: "A Study on Noise Reduction of Vibrating Plate by its Curvature Optimum Design and Optimum Rib Attachment"The 10^<th> International Conference on Sound and Vibration. (CD-ROM). 3917-3924 (2003)

Naoto Fuse、Masaaki Okuma、Jin-Young Jeon、Takeshi Nakahara：“通过曲率优化设计和优化肋连接来降低振动板噪声的研究”第 10 届国际声音与振动会议。

Naoto Fuse, Masaaki Okuma, Jin-Young Jeon, Takeshi Nakahara: "A Study on Noise Reduction of Vibrating Plate by its Curvature Optimum Design and Optimum Rib Attachment,"proceedings of The 10^<th> Intenational Conference on Sound and Vibration. (CD-ROM). 39

Naoto Fuse、Masaaki Okuma、Jin-Young Jeon、Takeshi Nakahara：“通过曲率优化设计和优化肋附件降低振动板噪声的研究”，第十届声音与振动国际会议论文集。