基于SKO的电除尘器板壳加强筋结构优化研究

发布时间：2018-01-02 01:13

本文关键词：基于SKO的电除尘器板壳加强筋结构优化研究　出处：《上海交通大学》2012年硕士论文　论文类型：学位论文

【摘要】：结构拓扑优化设计方法是近年来结构优化设计研究领域中的前沿课题和热点问题，也是结构优化设计中的重点和难点。与尺寸优化和形状优化相比，结构拓扑优化需要确定的参数更多，取得的经济效益更大，对工程设计人员更具吸引力。随着结构拓扑优化理论的进一步发展和完善，其应用于工程实践的条件也日趋成熟。例如应用于离散结构拓扑优化的基结构法，应用于连续体结构拓扑优化的均匀化方法、变厚度法、变密度法等都得到了长足的进展。本文深入研究了一种国内外研究较少的结构拓扑优化方法—SKO（Soft KillOption）方法，并运用APDL语言实现了以ANSYS为平台的基于SKO理论的结构拓扑优化设计方法。SKO方法是基于自然界的生物生长的自适应成长机理，即在承载大的区域增加材料，在承载小的区域减小材料。在结构设计中则要求结构内部满足常应力公理或满应力准则。本论文首先研究SKO方法中弹性模量与应力的关系式，这是SKO方法中的关键问题，并分析ANSYS软件平台下连续体的SKO优化方法的软件实现方法；然后以板壳结构加强筋为研究对象，建立板壳结构加强筋分布仿生设计方法的数学模型，分析其仿生设计方法，用该方法研究板壳结构的基结构的构建、加强筋的偏置、截面类型的设计和加强筋截面尺寸优化，之后按照ANSYS二次开发技术对板壳结构加强筋分布仿生设计方法进行软件实现。最后利用所提出的方法对大型电除尘器的出口烟箱进行了拓扑优化设计。结果表明，利用本文提出的方法，可对机械工程中的板壳结构进行快速的拓扑优化设计，得到近似的优化模型。与传统的经验式的结构设计相比，本文提出的设计方法不仅能快速得到近似的优化模型，而且还大大缩短了设计周期，提高了设计效率。
[Abstract]:Topology optimization design method of structure optimization in recent years is a frontier subject and a hot topic in the research field of design, but also the structure optimization design of the key and difficult. Compared with size optimization and shape optimization, topology optimization parameters need to be determined to obtain economic benefits more, more, more attractive for Engineers. With the further development of structural topology optimization theory and its application in perfect engineering practice gradually. For example, applied to the base structure method of discrete topology optimization, homogenization method is applied to the continuum structure topology optimization, variable thickness method, variable density method has been considerable progress.
This paper studies a topology optimization method of SKO research at home and abroad (Soft KillOption) method, and the realization of the SKO theory of topology optimization design method of.SKO method is the adaptive nature of biological growth and growth mechanism based on ANSYS platform using APDL language, which increase the material in the large area of bearing in a small area, the bearing material decreases. In the structural design is required to meet the internal structure of the constant stress axioms or full stress criterion.
This paper first studies the relation between the elastic modulus of the SKO method and stress, which is the key problem in the SKO method, and the analysis of ANSYS software platform software SKO optimization method of continuum method; then by shell structurereinforcement as the research object, establishing the mathematical model of bionic design method of shell structure with strong gluten distribution and analysis of the bionic design method, construction of base structure of the shell structure of the method, bias stiffener, cross section type of design and reinforcement section size optimization, after the two time in accordance with the development technology of ANSYS structure reinforcement distribution bionic design software of the shell. Finally, using the proposed method the outlet box of large scale electrostatic precipitator for the topology optimization design. The results show that using the method proposed in this paper, the shell structure in mechanical engineering for the topology optimization design of fast The approximate optimization model is obtained. Compared with the traditional experiential structural design, the proposed design method can not only get the approximate optimization model quickly, but also greatly shorten the design cycle and improve the design efficiency.

【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：X701.2;TH122

【参考文献】