复合材料应变率效应特性的总结

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1、一种碳纤维织物増强复合材料应变率相关的各向异性强度准则一一蒋邦海，张若棋碳纤维织物增强树脂基复合材料复合材料在三个主方向上的单轴压缩应力-应变关系表达式=£»(1+Clnt)eeeY:e=e/eo，to=0.001s"1表l拟合参数Table1Fittii^resultN.3(0.020.040.060.0825()50500.02O.(H0.060.080.100.123(x2502()0lr)ul(x.s(方向E./GPaC它、BnX4.870.01370.03498.50.865y6l960.()

2、2()9().017315.()0.8635.450.03090.011511.00.669阁2X方向的应7#应变关系Fig.2Stressstrain<*unesinxdirection纤维增强复合材料层板高速冲击损伤数值模拟一一古兴瑾，许希武复合材料层板高速冲击过程中存在明显的应变率效应，需要考虑应变率对强度参数的影响，模型屮认为复合材料单层板各方向上强度的应变率效应可以统一表示为S=S0(l+CInW)表2Kevlar/epoxy复合材科性能餐数Vahle2MaterialpropertiesofKevlar/epoxycompositePiopertyValueP

3、ropertyValueEa•Ett/GPa34.22/7(kg•m"*)1440(;翥2•1.670Pn0.31[•/GPa1.160Pn0.14Ei/GPa0.971PiOe14•5-1)0.041Vi0.6E2/(；Pa0.104Xt/MP«800•s-1)121000Xt/MPa200Gm/GPa0.670Yi/MPa80G,/(；Pa0.401Vc/MPa600•5"1)0.077ST/MPa183t^/GPa0.041St/MPa183^/(m*s"1)120000C0.1Note:C—Modificationfactorofthvstrainrateeff

4、ectonthe-MrvnKthparameter.碳/环氧树脂复合材料应变率效应的实验研宄一一王正浩，赵桂平，马君峰，张建新实验所用材料由笮向炭纤维环氧树脂预浸料(T300/Epoxy>(125°C同化体系>层合制成(

5、(45/-45)小和

6、(0/45/90/-45)小)耐铺层表1实验结果一览表Table1ResultsoftheexperimentsS

7、H-cimennumberStrainnile/s-1Maximum^./MPaStrainmrrespondingtof%FailutvsirainInitialelaAlicmodulus/GPak4510.8XI

8、O-6168.2311.0512.567.648k4520.7X10-6171.339.3511.957.451h4$30.8XIO-6167.1610.4611.577.935M4510.80X10°166.167.7110.2011.311M4520.81XIO«198.6510.0211.4011.960II451i.ooxio'244.311.503.8419.618II4520.53X10'231.131.633.7316.955H4530.83X10'217.971.543.0118.479h011.0Xio-4631.661.721.7238.817h02I

9、.OXIO-4573.791.421.4240.003H01I.7XIO®541.781.391.9040.406U020.4X10°569.651.561.5639.4901I.03XIO'777.711.372.1466.870H*920.94X10)702.621.442.0448.1023I.05Xl(P803.290.882.1574.30814-040.96X1(P690.131.652.4348.865Note：I.~b>wstrainrainM一InlemmliateMruinml«II—HighMliuinrale.E=7.678+lgeXlg2.195

10、8-Q0002elge)