带孔形状记忆合金薄板的变形行为研究  

Study on the Deformation Behavior of Shape Memory Alloy Thin Plate with Holes

作　　者：庞云浩 PANG Yun-hao(School of Mechanics and Aerospace Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China)

机构地区：[1]西南交通大学力学与航空航天学院,四川成都610031

出　　处：《机械研究与应用》2025年第1期71-74,共4页Mechanical Research & Application

摘　　要：NiTi形状记忆合金因其优异的力学性能在多个工程领域具备广阔的应用前景。因NiTi合金拥有很好的生物相容性,因此该材料在生物医疗行业拥有很高的不可替代性,且有学者通过加入孔洞获得了具有应用价值的NiTi合金结构,但此带孔结构存在复杂的力学变形行为。基于此,文章将对带孔NiTi形状记忆合金的变形行为展开系统性实验研究,通过不同孔洞大小和不同孔洞数量的实验揭示合金在荷载作用下的力-位移响应与应变响应。结果表明,带孔NiTi形状记忆合金拥有更低的刚度模量,且孔洞大小与材料的超弹性变形平台呈现线性关系,所得实验结果对工程应用提供了指导帮助。NiTi shape memory alloy has broad application prospects in many engineering fields due to its excellent mechanical properties.Besause NiTi alloy has good biocompatibility,the material has high irreplaceability in the biomedical industry;some scholars have obtained the application value of NiTi alloy structure by adding holes,but the structure with holes has complex mechanical deformation behavior,so this paper intends to reveal the deformation behavior of NiTi shape memory alloy through systematic experiments,and reveal the force-displacement response and strain response of the alloy under load through different hole sizes and different number of holes.The results show that the NiTi shape memory alloy with holes has a lower stiffness modulus,and the hole size has a linear relationship with the superelastic deformation platform of the material,which provides guidance for the engineering applications.

关 键 词：NITI形状记忆合金 带孔薄板 变形行为 力-位移曲线 

分 类 号：TF713.6[冶金工程—钢铁冶金]