Modeling of thermo-mechanical behavior of Ti-Ni shape memory alloy foils embedded in carbon fiber reinforced plastic laminates
Modeling of thermo-mechanical behavior of Ti-Ni shape memory alloy foils embedded in carbon fiber reinforced plastic laminates
复制标题
嵌入碳纤维增强塑料层压板中的钛镍形状记忆合金箔的热机械行为建模
DOI：
10.1163/1568551053297111
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
N. Takeda
中科院分区：
文献类型：
--
作者：
I. Taketa;M. Amano;M. Kobayashi;T. Ogisu;Y. Okabe;N. Takeda
将Ti-Ni形状记忆合金（SMA）箔嵌入碳纤维增强塑料（CFRP）交叉层合板中，以抑制层合板横向裂纹的发生和发展。当预应变SMA箔加热时，形状记忆效应在抑制横向裂纹的方向上产生适当的恢复压应力。然而，由于菱形相（r相）的存在，Ti-Ni SMA箔具有这些特殊的特性。因此，在本研究中，为了使用SMA箔作为执行器，提出了扩展Brinson模型来阐明SMA的复杂行为。然后，为确定该模型本构方程中的参数，对SMA箔进行了实验测试。利用该模型进行了多次仿真，并与实验结果进行了比较。结果表明，该模型能较好地表达Ti-Ni SMA薄膜的热力学行为。最后，在此模型的基础上计算了SMA箔在CFRP制造过程中的行为。计算结果表明，复合材料在制造过程中已经存在恢复应力，在CFRP交叉层合板中嵌入4%预应变SMA具有抑制横向裂纹发生的作用。
Ti-Ni shape memory alloy (SMA) foils are embedded into carbon fiber reinforced plastic (CFRP) cross-ply laminates in order to suppress the occurrence and progress of the transverse cracks in the laminates. When the pre-strained SMA foil is heated, the shape memory effect produces appropriate recovery compressive stress in the direction to suppress transverse cracks. However, Ti-Ni SMA foil has these specific characteristics due to the existence of a rhombohedral phase (R-phase). Thus, in this research, in order to use this SMA foil as an actuator, an extended Brinson model was proposed to clarify complicated behaviors of SMA. Then, for the determination of the parameters in the constitutive equation in this model, experimental tests were performed for the SMA foils. Using this model, several simulations were conducted and compared with experimental results. The agreement indicated that this model could express the thermo-mechanical behavior of the Ti-Ni SMA foil adequately. Finally, the behavior of the SMA foil during the CFRP manufacturing process was calculated on the basis of this model. The calculation results proved that the recovery stress already existed after the manufacturing process and the embedment of 4% pre-strained SMA into CFRP cross-ply laminate had the effect of suppressing the occurrence of transverse cracks.