基于数据点的叶片型线平滑重构及其特征

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-08 DOI:10.1016/j.tws.2025.113846

Kadir Kiran

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引用次数: 0

摘要

本文全面介绍了叶片型线数据点的重构和表征方法。针对重构问题，提出了一种c2 -连续均匀Bezier曲线拟合算法。该算法基于非线性最小二乘拟合方法，同时进行拟合和整流处理，消除了对重建叶型进行后处理的需要。因此，我们可以用最多14个贝塞尔曲线控制点准确地表示大量的叶型数据点。另一方面，在表征过程中，计算重构后的叶型弧度线、半径分布和基本设计参数（即进口金属、出口金属和交错角、弦长）。利用各种参考叶片和翼型的数据点，以及通过坐标测量机（CMM）获得的磨损航空发动机叶片轮廓数据点，完成了所提出程序的实现和验证。结果表明，所提出的方法及其算法对于叶片型线的重建和表征是非常成功、实用和强大的。它们在叶片的设计、分析、优化、检测和制造方面具有很大的潜力。

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Smooth reconstruction of blade profile from data points and its characterization

In the current paper, reconstruction and characterization procedures for the blade profile data points are comprehensively presented. For the reconstruction, a single

C^{2}

-continuous fair Bezier curve fitting algorithm is developed. This algorithm is based on the nonlinear least squares fitting method and it performs fitting and fairing processes concurrently, which eliminates the need for post processing of the reconstructed blade profile. Thus, we are able to accurately represent large number of blade profile data points with maximum 14 control points of a Bezier curve. On the other hand, in the characterization procedure, the reconstructed blade profile camber line, radius distribution and fundamental design parameters (i.e., inlet metal, outlet metal and stagger angles, and chord length) are computed. The implementations and validations of the proposed procedures are completed with data points of various reference blade and airfoil profiles, and a worn aero-engine blade profile data points achieved via a coordinate measuring machine (CMM). The results have shown that the proposed procedures along with their algorithms are quite successful, practical, and powerful for the blade profile reconstruction and characterization. They have great potential as useful tools for the design, analysis, optimization, inspection, and manufacturing of the blades.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.