Low-velocity impact characteristics and residual tensile strength of carbon fiber composite lattice core sandwich structures

Low-velocity impact characteristics and residual tensile strength of carbon fiber composite lattice core sandwich structures
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碳纤维复合材料晶格芯夹层结构的低速冲击特性及残余拉伸强度

DOI:
10.1016/j.compositesb.2011.01.007
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发表时间:
2011-06
期刊:
Composites Part B: Engineering
影响因子:
--
通讯作者:
Feng, Ji-Cai
Feng, Ji-Cai
中科院分区:
其他
文献类型:
--
作者:
Wang, Bing;Wu, Lin-Zhi;Ma, Li;Feng, Ji-Cai

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本文对碳纤维复合材料格芯夹层结构的低速冲击特性和剩余拉伸强度进行了实验和数值研究。低速冲击试验和剩余拉伸强度试验分别使用仪器化落锤试验机(Instron 9250 HV)和静态试验机(Instron 5569)进行。采用有限元软件ABAQUS/Explicit对碳纤维复合材料格芯夹层结构的低速冲击特性进行了数值模拟,并对剩余拉伸强度进行了预测。这些数值研究创建了一个用户定义的材料子程序(VUMAT),以增强损伤模拟,其中包括Hashin和Yeh失效准则。冲击接触力和拉伸强度使用本方法准确地估计。结果表明,在不同的冲击能量下,残余拉伸强度的退化可分为三个阶段,且退化幅度受堆积顺序的影响。
In this paper, low-velocity impact characteristics and residual tensile strength of carbon fiber composite lattice core sandwich structures are investigated by experimentally and numerically. Low-velocity impact tests and residual tensile strength tests are performed using an instrumented drop-weight machine (Instron 9250HV) and static test machine (Instron 5569), respectively. The FE (finite element) software, ABAQUS/Explicit is employed to simulate low-velocity impact characteristics and predict residual tensile strength of carbon fiber composite lattice core sandwich structures. These numerical investigations create a user-defined material subroutine (VUMAT) to enhance the damage simulation which includes Hashin and Yeh failure criteria. The impact contact force and the tensile strength are accurately estimated using the present method. From results of this paper, the degradation of residual tensile strength can be divided to three stages for different impact energies, and amplitudes of degradation are affected by stacking sequences.
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影响因子: 3.6
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