基于超彈性特性的SMA復(fù)合材料層合板低速沖擊損傷數(shù)值模擬方法
[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.
【作者單位】: 北京航空航天大學(xué)能源與動力工程學(xué)院;航空發(fā)動機(jī)結(jié)構(gòu)強(qiáng)度北京市重點(diǎn)實驗室;先進(jìn)航空發(fā)動機(jī)協(xié)同創(chuàng)新中心;
【基金】:國家自然科學(xué)基金(51305012,51375031) 航空科學(xué)基金(2014ZB51) 博士點(diǎn)基金(20111102120011)
【分類號】:TB33
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