| 一种修正的GFRP本构模型及其双层板结构抗冲击特性预测 |
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| 引用本文： | 张萌,杨扬,张岳青,柳柳,王慧. 一种修正的GFRP本构模型及其双层板结构抗冲击特性预测[J]. 振动与冲击, 2021, 0(3): 73-80 |
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| 作者姓名： | 张萌 杨扬 张岳青 柳柳 王慧 |
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| 作者单位： | 长安大学理学院;西北工业大学航空学院;中国船舶重工集团公司第七〇五研究所 |
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| 基金项目： | 国家自然科学基金青年基金项目(71701021,11702220)。 |
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| 摘 要： | 玻璃纤维增强聚合物基材料(GFRP)是一种典型的各向异性复合材料,在冲击载荷作用下具有复杂的力学响应.Autodyn软件中现有的GFRP材料模型所采用的状态方程仅考虑了体应变的单一影响,忽略了各向异性材料中应力分量与应变分量之间的耦合效应.首先,在已有的解耦理论基础上,对现有模型中的状态方程和强化模型进行了修正,计算得...
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| 关 键 词： | GFRP 各向异性材料 耦合效应 抗冲击特性 |
A modified GFRP constitutive model and its application in anti-impact characteristics prediction of dual-plate structure |
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| ZHANG Meng,YANG Yang,ZHANG Yueqing,LIU Liu,WANG Hui. A modified GFRP constitutive model and its application in anti-impact characteristics prediction of dual-plate structure[J]. Journal of Vibration and Shock, 2021, 0(3): 73-80 |
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| Authors: | ZHANG Meng YANG Yang ZHANG Yueqing LIU Liu WANG Hui |
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| Affiliation: | (School of Science,Chang’an University,Xi’an 710064,China;School of Aeronautics,Northwestern Polytechnic University,Xi’an 710072,China;705 Institute,China Shipbuilding Industry Corporation,Xi’an 710075,China) |
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| Abstract: | Glass fiber reinforced polymer(GFRP)is a typical anisotropic composite,and has complex mechanical responses under impact load.The existing state equation of GFRP material model used in the software Autodyn only considers the single effect of volume strain,and ignores the coupling effect between stress components and strain ones in anisotropic material.Here,firstly,based on the existing decoupling theory,state equation and reinforcement model of GFRP material model were modified,and the modified model’s material parameters were obtained with calculations.Secondly,based on comparative analysis of projectile residual velocity,debris cloud morphology and plastic wave propagation,advantages of the modified model in calculation accuracy and describing GFRP impact failure mechanism were verified.Finally,based on the modified model,the failure mode and anti-impact characteristics of GFRP-Al dual-plate protective structure under actions of different projectiles and different impact velocities were simulated and analyzed. |
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| Keywords: | glass fiber reinforced polymer(GFRP) anisotropic material coupling effect anti-impact characteristics |
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