U型渡槽参数化有限元建模与智能优化设计研究

为推动U型渡槽的结构优化设计更好地向智能化、自动化发展,建立了一套结合参数化有限元分析程序及智能优化算法程序的结构优化设计系统。基于自主研发的大型有限元通用程序HSNAP,开发了参数化建模程序模块,实现了渡槽三维设计模型的参数化描述；结合多核并行技术,编制了并行化鲸鱼优化算法程序进行优化计算。结合某灌区U型渡槽工程,以混凝土用量最低为优化目标,采用所提出的结构优化设计系统对渡槽结构尺寸参数进行优化,分析结果表明,与原设计方案相比,优化方案能够满足结构的安全要求,并具有显著的经济效益。

Study on parametric finite element modelling and intelligent optimal design of U-shaped aqueduct

In order to promote the intelligent and automatic development of optimal design of U-shaped aqueduct, a structural optimal design system for the U-shaped aqueduct was proposed, which combines the parametric finite element program and the intelligent optimization algorithm. Firstly, based on the large-scaled finite element program HSNAP, a parametric modelling module was developed for establishing 3D parametric model of aqueduct. Then, the paralleled whale optimization algorithm was implemented with the multi-core parallelization technology for the optimization. Taking a U-shaped aqueduct project as an example, under the condition that the strength and geometric constraints of aqueduct were satisfied, the geometric parameters of aqueduct were optimized with the minimum amount of concrete as the optimization objective. The results show that the optimized scheme can meet the safety requirements of the structure and has significant economic benefits compared with the original design scheme.