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SB4张力夹具的几何不一致性对其强度和弹性特性的影响。

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

作者信息

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

机构信息

Łukasiewicz Research Network-Institute for Sustainable Technologies, ul. Pułaskiego 6/10, Radom, 26-600, Poland.

Faculty of Transport and Informatics, WSEI University, 4 Projektowa Street, Lublin, 20-209, Poland.

出版信息

Sci Rep. 2024 Nov 28;14(1):29540. doi: 10.1038/s41598-024-80944-8.

DOI:10.1038/s41598-024-80944-8
PMID:39604508
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11603317/
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.

摘要

本文介绍了将铁轨连接到混凝土轨枕的张力扣件模型的对比实验室研究。本文的目的是评估符合PKP波兰国家铁路公司要求的实际工业产品的几何不一致性对受应力作用的张力紧固夹运行的影响。由于实际工业产品的研究成本和可能性有限，该研究的另一个目标是验证其在模型对比评估中的有用性。在研究中，作者使用了按1:2比例采用增量工程技术（3D打印）制造的张力紧固夹模型。将紧固夹（标称形状）的特性（在PKP波兰国家铁路公司的文档中有描述）与实际形状的紧固夹进行了比较。在调查中，作者证实了实际紧固夹形状与标称形状不一致的负面影响。

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