基于超弹性特性的SMA复合材料层合板低速冲击损伤数值模拟方法

发布时间：2018-11-15 22:11

【摘要】：基于ABAQUS有限元软件结合VC++6.0程序设计,建立了含不同铺层角度、不同排列密度形状记忆合金(SMA)纤维的复合材料层合板有限元模型。将基于Brinson本构模型的SMA分段线性超弹性模型以及判断复合材料层内失效的三维HASHIN失效准则编译至ABAQUS/VUMAT子程序,使用界面单元模拟复合材料层间区域,建立了SMA复合材料层合板的低速冲击损伤及冲击后剩余强度数值模拟方法。对比了不含SMA纤维层合板、含SMA纤维层合板、含普通金属丝层合板在不同冲击能量下的损伤响应。进一步分析了SMA纤维体积分数和直径变化对冲击响应的影响。冲击后剩余压缩强度模拟结果表明:冲击能量为16J时,含体积分数25%、直径0.5mm的SMA纤维层合板的冲击后剩余压缩强度相比不含SMA纤维层合板提高5.78%、相比含普通金属丝层合板提高4.69%。随着SMA纤维体积分数提高,层合板的抗低速冲击能力增强,当体积分数一定时,较细的(0.3mm)SMA纤维比粗的(0.6mm)SMA纤维对层合板的抗低速冲击能力增强效果更好。
[Abstract]:Based on ABAQUS finite element software and VC 6.0 program, a finite element model of composite laminates with different layering angles and different arrangement density of shape memory alloy (SMA) fiber was established. The SMA piecewise hyperelastic model based on Brinson constitutive model and the 3D HASHIN failure criterion for judging the failure in composite layer are compiled into ABAQUS/VUMAT subroutine, and the interlaminar region of composite material is simulated by interface element. A numerical simulation method for low velocity impact damage and residual strength of SMA composite laminates was established. The damage responses of laminated plates without SMA fiber, SMA fiber laminates and ordinary wire laminates under different impact energy were compared. The effects of the volume fraction and diameter of SMA fiber on the impact response were further analyzed. The simulation results of residual compressive strength after impact show that when the impact energy is 16 J, the residual compressive strength of SMA fiber laminates with diameter 0.5mm is 5.78% higher than that without SMA fiber laminates, when the impact energy is 16 J, the volume fraction is 25%, and the residual compressive strength of SMA fiber laminates with diameter 0.5mm is 5.78% higher than that without SMA fibers. Compared with the ordinary wire laminated plate, the increase of 4.69%. With the increase of volume fraction of SMA fiber, the low velocity impact resistance of laminated laminates is enhanced. When the volume fraction is constant, the (0.3mm) SMA fiber is better than the coarse (0.6mm) SMA fiber in enhancing the low velocity impact resistance of laminates.
【作者单位】：北京航空航天大学能源与动力工程学院;航空发动机结构强度北京市重点实验室;先进航空发动机协同创新中心;
【基金】：国家自然科学基金(51305012,51375031) 航空科学基金(2014ZB51) 博士点基金(20111102120011)
【分类号】：TB33

【参考文献】