Development of evolutionary structural optimization design under kinematics and control system

本研究旨在发展一种新的运动学和控制系统下的进化结构优化设计方法，并从结构动力学的角度研究蜻蜓的结构先进性特征。新的结构静力和动力演化优化方法得到了发展。然后，通过一些基础应用研究，探讨了它们的优点和实际用途。该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，该博士生对该研究项目做出了贡献。对初始结构的依赖问题进行了深入研究，并使其弱于最优解。该研究发明了一种新的进化结构优化方法。因此，该方法稳定地产生了很好的效果。应用该方法对悬臂梁模型、桥梁模型、发动机连杆等进行了优化设计，取得了较好的效果。此外，还开发了一种健康监测系统，作为机械结构系统的一种人工神经系统。因为要用这种进化优化方法设计的结构应该实现这样的自我监测系统。从结构动力学的角度对蜻蜓翅膀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。利用数码显微镜对蜻蜓翅脉网络进行了精确测量，建立了蜻蜓翅脉网络的有限元模型。有限元模型可用于各种计算机仿真研究。最后，本研究的结果将能够为研究者和其他人创造这种研究工作未来发展的可能性和有用性

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