基于模态分析的材料腐蚀速率预测方法研究

陈永红, 胡平, 左慧子, 明廷涛

doi:10.16577/j.issn.1001-1560.2022.0037

材料保护 >

2022 , Vol. 55 >Issue 2: 48 - 53

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0037

试验研究

基于模态分析的材料腐蚀速率预测方法研究

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1. 武汉东湖学院机电工程学院； 2. 海军工程大学舰船与海洋学院； 3. 东海装备保障室

胡平(1981-)，博士，讲师，主要研究方向为舰船装备保障，电话：15802795953，E-mail:16492770@qq.com

收稿日期: 2021-09-25

修回日期: 2021-10-27

录用日期: 2021-11-21

网络出版日期: 2023-12-26

基金资助

湖北省自然科学基金(2018CFC866)；武汉东湖学院青年基金(2020DHZK002)资助

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Research on the Corrosion Rate Prediction Method of Materials Based on Modal Analysis

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1.College of Mechanical and Electrical Engineering, Wuhan Donghu University, Wuhan 430212, China;2.College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China;3.Equipment Support Room of Donghai, Shanghai 200001, China

Received date: 2021-09-25

Revised date: 2021-10-27

Accepted date: 2021-11-21

Online published: 2023-12-26

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摘要

腐蚀速率是评价材料腐蚀程度的重要参数，对材料的安全可靠使用尤为重要。为了通过腐蚀材料的模态分析预测其腐蚀速率，依据材料损伤力学理论中材料的损伤可以用损失因子ω表示的观点，将该理论引入到材料腐蚀损伤过程，对材料处于均匀腐蚀的情况下，材料腐蚀损伤因子ω与腐蚀速率v和时间t的函数关系进行了分析，同时为实现对腐蚀损伤因子的表述，根据弹性材料振动理论，对腐蚀损伤因子ω与材料腐蚀前后的固有频率比

之间的关系进行了研究，在此基础上构建了基于模态分析的均匀腐蚀速率预测模型。通过理论分析和计算表明，该模型对材料的平均腐蚀速率进行预测是可行的，其预测结果对于材料的腐蚀程度评价具有一定参考价值，同时也为腐蚀速率的预测提供一种新方法。

关键词： 模态分析; 腐蚀速率; 预测; 损伤因子; 弹性模量

本文引用格式

陈永红, 胡平, 左慧子, 明廷涛 . 基于模态分析的材料腐蚀速率预测方法研究[J]. 材料保护, 2022 , 55(2) : 48 -53 . DOI: 10.16577/j.issn.1001-1560.2022.0037

Abstract

Corrosion rate is an important parameter to evaluate the corrosion degree of materials, especially for the safe and reliable use of materials.In order to predict the corrosion rate of materials by the modal analysis of corroded materials, according to the damage mechanics theory of material, the damage of material could be expressed as loss factor ω, which could be introduced into the process of material corrosion damage.When the material was under uniform corrosion, the functional relationship between materials corrosion damage factor ω with corrosion rate v and time t was analyzed.Additionally, for gaining the expression of corrosion damage factor, according to the theory of elastic material vibration, the relationship between corrosion damage factor ω and natural frequency ratio

of materials before and after corrosion was studied.On this basis, a uniform corrosion rate prediction model based on modal analysis was further built.The theoretical analysis and calculation showed that the model was feasible to predict the average corrosion rate of materials, and the prediction results had reference value for the evaluation of the corrosion degree of materials, which also provided a new prediction method for the prediction of corrosion rate.

Key words： modal analysis; corrosion rate; prediction; damage factor; elasticity modulus

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