ANALYSIS OF INTERFACE CONSTITUTIVE AND PROPERTIES OF INDENTED SMA WIRE COMPOSITES

Abstract

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

CLC Number:

TB332

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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