{"title":"Damage of materials under proportional loading","authors":"Anatoly Grabovskiy, O. Bondarets, I. Babiienko","doi":"10.20535/2521-1943.2023.7.2.261955","DOIUrl":null,"url":null,"abstract":"The work is devoted to the study of material damage during elasto-plastic proportional loading, in particular, the influence of two loading mechanisms, detachment and shear, is taken into account. These mechanisms include viscous, brittle, and visco-brittle modes of failure. The accumulation of scattered damage is considered as a multi-scale and multi-stage phenomenon that occurs during proportional loading at the micro- and meso-levels of the destruction of the metal structural material. As part of the study, a quantitative assessment of the degradation of the physical and mechanical properties of materials was performed, in particular, changes in the modulus of elasticity E and G, and the definition of equivalent damage arising from an elastoplastic proportional load is proposed. Experimental data on the kinetics of damage accumulation on 12X18N10T steel samples, which were subjected to axial load (tension), shear (torsion) and proportional load with the stiffness parameter of the stress state K = 0.5 before failure, are considered. The work compares experimental results with theoretical data, damage accumulation. The obtained conclusions contribute to a deeper understanding of the mechanisms of destruction of materials under the action of a proportional load, and can also find practical application in the design and assessment of the load-bearing capacity of structural elements.","PeriodicalId":32423,"journal":{"name":"Mechanics and Advanced Technologies","volume":"69 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanics and Advanced Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.20535/2521-1943.2023.7.2.261955","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The work is devoted to the study of material damage during elasto-plastic proportional loading, in particular, the influence of two loading mechanisms, detachment and shear, is taken into account. These mechanisms include viscous, brittle, and visco-brittle modes of failure. The accumulation of scattered damage is considered as a multi-scale and multi-stage phenomenon that occurs during proportional loading at the micro- and meso-levels of the destruction of the metal structural material. As part of the study, a quantitative assessment of the degradation of the physical and mechanical properties of materials was performed, in particular, changes in the modulus of elasticity E and G, and the definition of equivalent damage arising from an elastoplastic proportional load is proposed. Experimental data on the kinetics of damage accumulation on 12X18N10T steel samples, which were subjected to axial load (tension), shear (torsion) and proportional load with the stiffness parameter of the stress state K = 0.5 before failure, are considered. The work compares experimental results with theoretical data, damage accumulation. The obtained conclusions contribute to a deeper understanding of the mechanisms of destruction of materials under the action of a proportional load, and can also find practical application in the design and assessment of the load-bearing capacity of structural elements.
这项工作致力于研究弹塑性比例加载过程中的材料破坏,特别是考虑了两种加载机制(脱离和剪切)的影响。这些机制包括粘性、脆性和粘脆破坏模式。分散损伤的累积被视为一种多尺度、多阶段的现象,在按比例加载过程中发生在金属结构材料破坏的微观和中观层面。作为研究的一部分,对材料的物理和机械性能退化进行了定量评估,特别是弹性模量 E 和 G 的变化,并提出了弹塑性比例载荷产生的等效损伤的定义。研究考虑了 12X18N10T 钢样品损伤累积动力学的实验数据,这些样品在失效前分别承受了轴向载荷(拉伸)、剪切(扭转)和应力状态刚度参数 K = 0.5 的比例载荷。工作将实验结果与理论数据、损伤累积进行了比较。得出的结论有助于加深对材料在比例载荷作用下破坏机理的理解,也可在设计和评估结构元件的承载能力时得到实际应用。