深潜器观察窗力学性能分析及结构优化
发布时间：2018-08-23 19:35
【摘要】：世界经济的发展越来越受到陆上资源日益减少的制约,海洋作为人类发展的第二大空间,深海资源的开发利用则成为了当代各国竞争的热点。开展对深海领域的探索,努力提高我国海洋资源的开发能力,积极发展海洋经济,对于坚决维护我国的海洋权益、建设海洋强国具有重要的战略意义。深海载人潜水器是人类开发海洋空间的一种最为有效的手段,是海底资源的探索、海底任务执行的必要设备,同时也是保护海洋空间的重要举措,因此深海载人潜水器的开发和研制是具有深远意义的战略性前沿高科技。深海载人潜水器的关键技术之一是如何使其开口结构部分具有足够的安全可靠性。随着下潜深度的加大,整个潜水器的外海水压力随之增加,这就对开口结构部分的的结构强度以及密封性能提出了相当高的要求。潜水器的开口结构主要分为供工作人员使用的观察窗口和出入舱口两种样式。本文主要针对深海载人潜水器的观察窗结构进行讨论。基于弹塑性力学的分析计算方法与接触面力学的相关理论,并结合ANSYS有限元软件,对观察窗与窗座之间的接触面进行研究分析,探究其在不同摩擦系数下的应力、应变情况;基于聚类分析的理论对接触面上施加的摩擦系数进行分类,按照分类得到的结果分段施加到接触面上,探讨接触面的承载情况,得到更为优化的观察窗接触面形式;针对潜水器观察窗的轴向应力的求解,基于BP神经网络的理论方法,提出了观察窗的神经网络求解办法,并与ANSYS有限元的求解结果进行对比,这样就突破了以往只局限于使用有限元仿真进行求解的方法;文章的最后提出了一种新型的球扇形观察窗的结构,与球扇形观察窗在应力应变、接触面力学性及光学性能方面进行了综合分析和对比,论证了新型观察窗的可行性。本文针对潜水器观察窗结构所使用的分析方法、结论及结构优化方案对深海探测装备的设计具有一定的参考价值。
[Abstract]:The development of the world economy is more and more restricted by the decreasing of the land resources. As the second space of human development, the exploitation and utilization of the deep-sea resources has become the hot spot of the competition of the contemporary countries. It is of great strategic significance to carry out the exploration in the deep sea field, to improve the exploitation ability of our country's marine resources and to develop the marine economy actively, which is of great strategic significance for firmly safeguarding our country's marine rights and interests and building a powerful marine country. Deep-sea manned submersibles are the most effective means of human exploitation of marine space, the exploration of seabed resources, the necessary equipment for the implementation of seabed missions, and the important measures to protect marine space, Therefore, the development and development of deep-sea manned submersible is a strategic frontier high-tech with far-reaching significance. One of the key technologies of deep-sea manned submersible is how to make its open structure have enough safety and reliability. With the increase of the depth of diving, the external sea pressure of the whole submersible increases, which puts forward a very high requirement for the structural strength and sealing performance of the open structure part. The opening structure of the submersible is mainly divided into two types: the observation window and the access hatch for the staff. This paper mainly discusses the structure of observation window of deep-sea manned submersible. Based on the analysis and calculation method of elastic-plastic mechanics and the related theory of contact surface mechanics, and combined with ANSYS finite element software, the contact surface between observation window and window seat is studied and analyzed, and the stress and strain under different friction coefficient are explored. Based on the theory of cluster analysis, the friction coefficient applied on the contact surface is classified and applied to the contact surface according to the results obtained from the classification, and the bearing capacity of the contact surface is discussed, and a more optimized form of the contact surface of the observation window is obtained. Aiming at the solution of axial stress of the observation window of submersible vehicle, based on the theory and method of BP neural network, the method of neural network solution of observation window is put forward, and the result is compared with that of ANSYS finite element method. In the end of this paper, a new structure of spherical fan window is proposed, and the stress and strain of the spherical fan window are analyzed. The mechanical and optical properties of the contact surface are analyzed and compared, and the feasibility of the new observation window is demonstrated. In this paper, the analysis method, conclusion and structure optimization scheme for the structure of the observation window of the submersible are of certain reference value for the design of the deep-sea exploration equipment.
【学位授予单位】：内蒙古工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.941
[Abstract]:The development of the world economy is more and more restricted by the decreasing of the land resources. As the second space of human development, the exploitation and utilization of the deep-sea resources has become the hot spot of the competition of the contemporary countries. It is of great strategic significance to carry out the exploration in the deep sea field, to improve the exploitation ability of our country's marine resources and to develop the marine economy actively, which is of great strategic significance for firmly safeguarding our country's marine rights and interests and building a powerful marine country. Deep-sea manned submersibles are the most effective means of human exploitation of marine space, the exploration of seabed resources, the necessary equipment for the implementation of seabed missions, and the important measures to protect marine space, Therefore, the development and development of deep-sea manned submersible is a strategic frontier high-tech with far-reaching significance. One of the key technologies of deep-sea manned submersible is how to make its open structure have enough safety and reliability. With the increase of the depth of diving, the external sea pressure of the whole submersible increases, which puts forward a very high requirement for the structural strength and sealing performance of the open structure part. The opening structure of the submersible is mainly divided into two types: the observation window and the access hatch for the staff. This paper mainly discusses the structure of observation window of deep-sea manned submersible. Based on the analysis and calculation method of elastic-plastic mechanics and the related theory of contact surface mechanics, and combined with ANSYS finite element software, the contact surface between observation window and window seat is studied and analyzed, and the stress and strain under different friction coefficient are explored. Based on the theory of cluster analysis, the friction coefficient applied on the contact surface is classified and applied to the contact surface according to the results obtained from the classification, and the bearing capacity of the contact surface is discussed, and a more optimized form of the contact surface of the observation window is obtained. Aiming at the solution of axial stress of the observation window of submersible vehicle, based on the theory and method of BP neural network, the method of neural network solution of observation window is put forward, and the result is compared with that of ANSYS finite element method. In the end of this paper, a new structure of spherical fan window is proposed, and the stress and strain of the spherical fan window are analyzed. The mechanical and optical properties of the contact surface are analyzed and compared, and the feasibility of the new observation window is demonstrated. In this paper, the analysis method, conclusion and structure optimization scheme for the structure of the observation window of the submersible are of certain reference value for the design of the deep-sea exploration equipment.
【学位授予单位】：内蒙古工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.941
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