【摘要】：基于ABAQUS有限元軟件結(jié)合VC++6.0程序設計,建立了含不同鋪層角度、不同排列密度形狀記憶合金(SMA)纖維的復合材料層合板有限元模型。將基于Brinson本構(gòu)模型的SMA分段線性超彈性模型以及判斷復合材料層內(nèi)失效的三維HASHIN失效準則編譯至ABAQUS/VUMAT子程序,使用界面單元模擬復合材料層間區(qū)域,建立了SMA復合材料層合板的低速沖擊損傷及沖擊后剩余強度數(shù)值模擬方法。對比了不含SMA纖維層合板、含SMA纖維層合板、含普通金屬絲層合板在不同沖擊能量下的損傷響應。進一步分析了SMA纖維體積分數(shù)和直徑變化對沖擊響應的影響。沖擊后剩余壓縮強度模擬結(jié)果表明:沖擊能量為16J時,含體積分數(shù)25%、直徑0.5mm的SMA纖維層合板的沖擊后剩余壓縮強度相比不含SMA纖維層合板提高5.78%、相比含普通金屬絲層合板提高4.69%。隨著SMA纖維體積分數(shù)提高,層合板的抗低速沖擊能力增強,當體積分數(shù)一定時,較細的(0.3mm)SMA纖維比粗的(0.6mm)SMA纖維對層合板的抗低速沖擊能力增強效果更好。
[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.
【作者單位】： 北京航空航天大學能源與動力工程學院;航空發(fā)動機結(jié)構(gòu)強度北京市重點實驗室;先進航空發(fā)動機協(xié)同創(chuàng)新中心;
【基金】：國家自然科學基金(51305012,51375031) 航空科學基金(2014ZB51) 博士點基金(20111102120011)
【分類號】：TB33

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