建筑用钢弹性响应的多尺度模拟和实验测量。

Multiscale simulation and experimental measurements of the elastic response for constructional steel.

机构信息

Department of Materials Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, China.

School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, 541004, China.

出版信息

Sci Rep. 2022 Dec 24;12(1):22317. doi: 10.1038/s41598-022-26594-0.

DOI:10.1038/s41598-022-26594-0

PMID:36566306

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9789963/

Abstract

The multiscale elastic response to the macroscopic stress was simulated to reveal the multi-scale correlation of elastic properties of the medium carbon steel. Based on the multiscale correlation constitutive equations derived from this constitutive model, the effective elastic constants (EECs) of medium carbon steel are predicted. In addition, the diffraction elastic constants (DECs) of the constituents of the medium carbon steel are also evaluated. And then, the simple in-situ X-ray diffraction experiments were performed for the measurements of DECs and EECs of treated 35CrMo steel during the four-point bending. Compared with the experimental measurements and different existing models, the results demonstrated that the developed constitutive model was in good agreement with the measured values of the EECs and DECs, and that the feasibility and reliability of the constitutive model used to simulate multiscale elastic response could reveal the correlation between the material and its constitutes.

摘要

模拟了宏观应力下的多尺度弹性响应，以揭示中碳钢弹性性能的多尺度相关性。基于从本构模型推导出的多尺度相关本构方程，预测了中碳钢的有效弹性常数 (EEC)。此外，还评估了中碳钢各组成部分的衍射弹性常数 (DEC)。然后，针对处理后的 35CrMo 钢进行了简单的原位 X 射线衍射实验，以测量四点弯曲过程中 DEC 和 EEC。与实验测量值和不同现有模型相比，结果表明，所开发的本构模型与 EEC 和 DEC 的测量值吻合较好，并且该本构模型用于模拟多尺度弹性响应的可行性和可靠性可以揭示材料与其组成之间的相关性。