Study the mechanical properties of LY160 steel under large strains

IF 4 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Constructional Steel Research Pub Date : 2025-01-13 DOI:10.1016/j.jcsr.2025.109339

Yongqiang Yang , Xu Zhang , Tao Jiang , Junwu Dai , Hui Pang

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Abstract

This research develops a flat specimen based on short column buckling theory to study the mechanical properties of LY160 steel under large strains. The parameter analysis performed by the finite element method provides a thorough discussion of the flat specimen's dimensions. Simultaneously, a design outline for LYP steel coupons with robust buckling resistance is proposed. The Digital Image Correlation (DIC) system is then presented in order to examine the uniaxial compressive and tensile properties of LY160 steel. Displacement comparisons across different gauge lengths are conducted to ascertain the strain states of the specimen during tests. In the meantime, the hysteretic behavior of LY160 steel is investigated using two control techniques: extensometer strain control and crosshead displacement control. The disparate hysteretic modes between two gauges are compared, and the reasons for the significant variances are thoroughly discussed. The findings indicate that deformation in the transition section is significant and the DIC system provides valuable data for studying the ductile fracture of LY160 steel under large strains.

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来源期刊

Journal of Constructional Steel Research 工程技术-工程：土木

CiteScore

7.90

自引率

19.50%

发文量

550

审稿时长

46 days

期刊介绍： The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.