金属橡胶无序式网格互穿结构的热力学性能研究

doi:10.3901/JME.2024.08.165

机械工程学报 ›› 2024, Vol. 60 ›› Issue (8): 165-175.doi: 10.3901/JME.2024.08.165

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金属橡胶无序式网格互穿结构的热力学性能研究

任志英^1,2, 黄子豪^1,2, 方荣政^1,2, 王秦伟^1,2, 莫继良³, 秦红玲^1,2

1. 福州大学机械工程及自动化学院福州 350116;
2. 福州大学金属橡胶与振动噪声研究所福州 350116;
3. 西南交通大学机械工程学院成都 610031

收稿日期:2023-04-12 修回日期:2023-09-02 出版日期:2024-04-20 发布日期:2024-06-17
作者简介:任志英,女,1980年出生,博士,教授,博士研究生导师。主要研究方向为金属橡胶材料、摩擦学。E-mail:renzyrose@126.com;秦红玲(通信作者),女,1978年出生,博士,教授,博士研究生导师。主要研究方向为摩擦学及表面工程,噪声与振动控制。E-mail:qhl@fzu.edu.cn
基金资助:
国家自然科学基金NSAF联合基金(U2330202)、国家自然科学基金(52175162,51805086,51975123)和福建省技术创新重点攻关及产业化(2023XQ005)资助项目。

Study on Thermomechanical Properties of Metal-rubber Disordered Lattice Interpenetrating Structures

REN Zhiying^1,2, HUANG Zihao^1,2, FANG Rongzheng^1,2, WANG Qinwei^1,2, MO Jiliang³, Qin Hongling^1,2

1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116;
2. Institute of Metal Rubber, Vibration and Noise, Fuzhou University, Fuzhou 350116;
3. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031

Received:2023-04-12 Revised:2023-09-02 Online:2024-04-20 Published:2024-06-17

摘要/Abstract

摘要： 金属橡胶是一种弹性多孔纯金属材料，其内部的网格互穿结构复杂而无序，难以通过一般方法准确描述，这限制了其在高温环境下的可控应用。为此，通过虚拟制备技术构建了综合考虑金属橡胶材料属性、线匝几何尺寸及工艺参数等因素的金属橡胶有限元模型。在此基础上，推导出金属橡胶内部金属丝微元热传导的动态理论公式并进行相关的有限元分析。结果表明：当仅有热载荷时，金属橡胶主要由连续金属丝实现传热并通过界面接触进行换热，温度场沿成形方向呈梯度分布。此外，由于材料的膨胀其宏观尺寸会增大，但在外部约束与孔隙收容机制的作用下其热膨胀系数小于实心材料的热膨胀系数。而当同时存在热-力载荷时，金属橡胶展现出了良好的结构稳定性与耐热性。通过材料高温准静态压缩试验对材料的热力学性能进行了测试，验证所建立的有限元模型能够有效地反映与预测金属橡胶材料复杂的热力学性能，为材料在高温环境下的应用提供了一定的理论指导。

关键词: 金属橡胶, 网格互穿结构, 虚拟制备, 热力学性能

Abstract: Metal rubber is an elastic porous pure metal material with a complex and disordered internal mesh interpenetration structure, which is difficult to describe accurately by general methods, which limits its controllable applications in high temperature environments. To this end, a finite element model of metal rubber is constructed by virtual preparation technology that integrates the material properties, wire dimensions and process parameters of metal rubber. On this basis, the dynamic theoretical formulas for the heat conduction of metal wire microelements inside metal rubber is derived and related finite element analysis is carried out. The results show that when only thermal load is present, the metal rubber is mainly realized by continuous metal wires for heat transfer and heat exchange through interfacial contact, and the temperature field is distributed in a gradient along the forming direction. In addition, due to the expansion of the material, its macroscopic size increases, but its thermal expansion coefficient is smaller than that of the solid material under the action of the external constraint and pore containment mechanism. When thermal-force loading is also present, the metal rubber shows good structural stability and heat resistance. The thermomechanical properties of the material were tested by high-temperature quasi-static compression test, it is verified that the established finite element model can effectively reflect and predict the complex thermomechanical properties of the metal-rubber material, which provides some theoretical guidance for the application of the material in high-temperature environment.

Key words: metal rubber, lattice interpenetrating structure, virtual preparation, thermomechanical properties

中图分类号:

TH161

任志英, 黄子豪, 方荣政, 王秦伟, 莫继良, 秦红玲. 金属橡胶无序式网格互穿结构的热力学性能研究[J]. 机械工程学报, 2024, 60(8): 165-175.

REN Zhiying, HUANG Zihao, FANG Rongzheng, WANG Qinwei, MO Jiliang, Qin Hongling. Study on Thermomechanical Properties of Metal-rubber Disordered Lattice Interpenetrating Structures[J]. Journal of Mechanical Engineering, 2024, 60(8): 165-175.

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金属橡胶无序式网格互穿结构的热力学性能研究

Study on Thermomechanical Properties of Metal-rubber Disordered Lattice Interpenetrating Structures

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