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A Novel Structural Optimization Method and a Case Study Based on a CHS X-Joint
International Journal of Steel Structures ( IF 1.5 ) Pub Date : 2021-06-19 , DOI: 10.1007/s13296-021-00499-6
Xingqi Liu , Weitong Yi , Hailin Sun , Lei Zhu , Xi Chen

In this paper, a new structural optimization method, “percentage structure optimization”, is presented. This method is obtained by using finite element method (FEM) to reduce a specific proportion of the stress inefficient element reduction, which is called the "structural optimization percentage index". In addition, an evaluation index of the optimized structure, “economic benefit index”, is introduced. Compared with the existing structural optimization methods, the optimization process is smoother and the results are more controllable. Moreover, the method of evaluating the optimization results through the “economic benefit index” pays more attention to the economic benefits of the project, and can achieve the balance between the minimization of material and the detention of bearing capacity to maximize the economic benefits. On the basis of the existing experiment, using ANSYS 17.0 software, two Circular Hollow Sections (CHS) X-joints are optimized by "structural optimization percentage index" of 5, 10 and 15%, and "economic benefit index" is adopted as the judgment condition of the optimization results. The results show that the method can not only guarantee the bearing capacity, but also save materials as much as possible, and verify the reliability of the new structural optimization method.



中文翻译:

基于 CHS X 关节的新型结构优化方法和案例研究

在本文中,提出了一种新的结构优化方法——“百分比结构优化”。这种方法是通过使用有限元方法(FEM)来减少特定比例的应力低效单元减少,称为“结构优化百分比指标”。此外,还引入了优化结构的评价指标“经济效益指标”。与现有的结构优化方法相比,优化过程更加平滑,结果更加可控。而且,通过“经济效益指标”来评价优化结果的方法更注重工程的经济效益,可以在材料的最小化和承载力的滞留之间取得平衡,使经济效益最大化。在已有试验的基础上,利用ANSYS 17.0软件,以“结构优化百分比指标”5、10、15%对两个圆形空心截面(CHS)X型接头进行优化,并采用“经济效益指标”作为优化指标。优化结果的判断条件。结果表明,该方法既能保证承载力,又能尽可能节省材料,验证了新结构优化方法的可靠性。

更新日期:2021-06-19
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