On the Fatigue Strength Calculation of Welded Shell Structures Made of High-Strength Steels under Low-Cycle Loading: Part 2. Development of the Calculation Procedure

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Inorganic Materials: Applied Research Pub Date : 2022-12-01 DOI:10.1134/S2075113322060107

A. V. Ilyin, K. E. Sadkin, N. S. Zabavichev

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Abstract—The first part of this work [1] substantiates a procedure for estimating the number of cycles before the appearance of a technically detectable fatigue crack in the stress concentrators of weld joints, which are typical places of crack occurrence in the absence of major technological defects. This procedure is based on a physical model of the initial stage of fatigue failure, summarized data on the resistance of high-strength steels and their weld joints to fatigue failure, and finite element calculations. The procedure reduces itself to the use of interpolation formulas summarizing the numerical simulation data. The second part of this study presents information necessary for practical estimation of the fatigue strength in the low-cycle load region, including the choice of reserve coefficients in calculating the life of welded structures. The evaluated data are compared with those obtained in the fatigue tests of large-thickness joints welded in a multi-pass manner.

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低周载荷下高强钢焊接壳结构疲劳强度计算:第二部分。计算程序的开发

摘要:本工作的第一部分[1]证实了在焊接接头应力集中点出现技术上可检测的疲劳裂纹之前的循环次数估计程序，焊接接头应力集中点是在没有重大技术缺陷的情况下裂纹发生的典型地方。该程序基于疲劳破坏初始阶段的物理模型，总结了高强钢及其焊接接头抗疲劳破坏的数据，并进行了有限元计算。该程序简化为使用插值公式总结数值模拟数据。本研究的第二部分提供了实际估计低周载荷区域疲劳强度所需的信息，包括计算焊接结构寿命时储备系数的选择。将评价数据与多道次焊接大厚度接头疲劳试验结果进行了比较。

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来源期刊

Inorganic Materials: Applied Research Engineering-Engineering (all)

CiteScore

0.90

自引率

0.00%

发文量

199

期刊介绍： Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.