The influence of geometric nonconformance of the SB4 tension clamps on their strength and elasticity characteristics.

IF 3.8 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Scientific Reports Pub Date : 2024-11-28 DOI:10.1038/s41598-024-80944-8

Daniel Pieniak, Mirosław Guzik, Paweł Lonkwic, Piotr Lesiak, Jaroslaw Selech, Zbigniew Krzysiak, Jonas Matijosius, Marie Sejkorova, Artūras Kilikevičius

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Abstract

The paper presents comparative laboratory investigations of tension fastener models that attach rails to concrete sleepers. The aim of the paper was to assess the influence of geometric nonconformity of the actual industrial product that meets the PKP Polskie Linie Kolejowe S.A. requirements on the operation of a tension-fastening clamp under stress. Due to the cost and limited possibility of research of the actual industrial product, an additional objective of the research was to validate the usefulness of it in the comparative assessment of the models. In the research, the authors used models of tension fastening clamps manufactured in incremental engineering technology (3D print) on scale 1:2. The properties of the fastening clamps (in their nominal shape) were compared (described in the PKP Polskie Linie Kolejowe S.A. documentation) with the fastening clamps of the actual shape. In the investigation, the authors have confirmed the negative influence of the non-conformance of the shape of the actual fastening clamps with the nominal ones.

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SB4 拉力夹具的几何尺寸不合格对其强度和弹性特性的影响。

本文介绍了将钢轨固定在混凝土枕木上的张紧装置模型的实验室比较研究。论文的目的是评估符合 PKP Polskie Linie Kolejowe S.A. 要求的实际工业产品的几何不一致性对拉紧夹具在应力下运行的影响。由于研究实际工业产品的成本和可能性有限，研究的另一个目的是验证其在模型比较评估中的实用性。在研究中，作者使用了以增量工程技术（3D 打印）制造的张力拧紧夹模型，比例为 1:2。紧固夹具的属性（标称形状）与实际形状的紧固夹具进行了比较（在 PKP Polskie Linie Kolejowe S.A. 文档中进行了描述）。在调查中，作者证实了实际紧固夹具的形状与标称形状不一致所造成的负面影响。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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