A comparative analysis of the stress-strain state of disc specimens in assessing the structural strength of materials

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2022-01-01 DOI:10.5267/j.esm.2021.12.001

L. Tsvik, E. Zenkov

引用次数: 0

Abstract

A study of the stress-strain state (SSS) of disc specimens has been conducted when testing specimens with stress concentrators (grooves). The research has shown that the truncation of circular discs along two symmetrical chords makes it possible to change the type (the ratio of principal stresses) of SSS that occurs at the destruction site. Therefore, these specimens can be used to assess the structural strength of materials on standard single-drive testing machines, taking into account the real type of SSS that occurs in the bearing elements of machines. The results of numerical SSS modeling have been used to build the dependences of the SSS type and level on geometric parameters of specimens. Geometrical parameters can be chosen for a certain SSS type to assess both the static and fatigue strengths of materials used in the manufacture of bearing elements.

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材料结构强度评估中圆盘试样应力-应变状态的对比分析

对带应力集中器(凹槽)的圆盘试样进行了应力-应变状态(SSS)研究。研究表明，沿两个对称弦的圆形圆盘的截断可以改变破坏部位发生的SSS的类型(主应力比)。因此，这些试样可用于在标准单驱动试验机上评估材料的结构强度，同时考虑到机器轴承元件中发生的实际SSS类型。利用数值SSS模型的结果，建立了SSS类型和水平与试件几何参数的关系。可以选择某种SSS类型的几何参数来评估制造轴承元件所用材料的静强度和疲劳强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.