压痕SMA丝复合材料界面本构与性能分析

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (1): 40-46.

压痕SMA丝复合材料界面本构与性能分析

朱同舟, 袁国青^*

同济大学航空航天与力学学院,上海200092

收稿日期:2020-04-14 出版日期:2021-01-28 发布日期:2021-01-25
通讯作者: 袁国青(1967-),男,博士,副教授,博导,主要从事复合材料结构方面的研究,90020@tongji.edu.cn。
作者简介:朱同舟(1995-),男,硕士,主要从事复合材料方面的研究。
基金资助:
中央高校基本科研业务费专项资金资助(22120180222)

ANALYSIS OF INTERFACE CONSTITUTIVE AND PROPERTIES OF INDENTED SMA WIRE COMPOSITES

ZHU Tong-zhou, YUAN Guo-qing^*

School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China

Received:2020-04-14 Online:2021-01-28 Published:2021-01-25

摘要/Abstract

摘要： 基于混杂形状记忆合金(Shape Memory Alloy,简称“SMA”)驱动器的自适应可变形复合材料结构正常服役的前提是界面性能良好。研究表明在光圆SMA丝上引入细压痕可显著提升界面性能。进一步研究压痕SMA丝复合材料的本构是开展混杂压痕SMA丝复合材料结构设计、应用的基础。本文通过圆柱拉拔试验,基于搭建的粘结-滑移测试系统,采集到了载荷-滑移数据,结合理论分析,建立了界面的粘结-滑移本构模型,并通过分析得出了基于区域平均准则思想的界面临界失效剪应力强度值。

关键词: 压痕SMA丝, 复合材料, 界面本构, 粘结-滑移, 剪应力强度

Abstract: The premise of normal service of an adaptive deformable composite material structure based on hybrid shape memory alloy (SMA) drives is that the interface performance is good. Studies have shown that the introduction of dense indentation on the normal SMA wire can significantly improve the interface performance. Further research on the constitutive of the indented SMA wire composite material is the basis for the design and application of hybrid indented SMA wire composite materials. In this paper, through the cylindrical pullout test, based on the built bond-slip test system, the interface pull-slip data was collected. Combined with theoretical analysis, the bond-slip constitutive model of the interface is derived. Through analysis, the critical shear strength value of interface based on the idea of regional average criterion is obtained. The strength value based on the regional average stress overcomes the stress singularity and obtains a better mesh size convergence. The strength values obtained in this paper can be used to guide structural design.

Key words: indented SMA wire, composite material, interface constitutive, bond-slip, shear stress strength

中图分类号:

TB332

朱同舟, 袁国青. 压痕SMA丝复合材料界面本构与性能分析[J]. 复合材料科学与工程, 2021, 0(1): 40-46.

ZHU Tong-zhou, YUAN Guo-qing. ANALYSIS OF INTERFACE CONSTITUTIVE AND PROPERTIES OF INDENTED SMA WIRE COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(1): 40-46.

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