PVC泡沫夹芯板低速冲击响应数值模拟

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (2): 29-34.

PVC泡沫夹芯板低速冲击响应数值模拟

陈博^{1, 2}, 张彦飞^{1, 2}, 王智^{1, 2*}, 赵贵哲^{1, 2*}

1.中北大学山西省高分子复合材料工程技术研究中心,太原030051;
2.中北大学材料与工程学院,太原030051

收稿日期:2015-08-26 出版日期:2016-02-20 发布日期:2016-02-20
通讯作者: 赵贵哲(1965-),男,博士,教授,主要从事高分子及其复合材料成型新技术新工艺研究,zgz@nuc.edu.cn。
王智(1984-),男,博士,副教授,主要从事热固性树脂改性研究,shikouri@163.com。
作者简介:陈博(1989-),男,硕士,主要从事复合材料夹芯结构渐进损伤数值模拟相关工作。
基金资助:
青年科学基金项目(51503187)

SIMULATING THE RESPONSE Of THE PVC FOAM SANDWICH PANELSSUBJECTED TO LOW-VELOCITY IMPACT

CHEN Bo^1,2, ZHANG Yan-fei^1,2, WANG Zhi^1,2*, ZHAO Gui-zhe^1,2*

1. Research Center for Engineering Technology of Polymeric Composites of Shanxi Province,North University of China, Taiyuan 030051, China
2. Shool of Materials Science and Engineering of North University of China, Taiyuan 030051, China

Received:2015-08-26 Online:2016-02-20 Published:2016-02-20

摘要/Abstract

摘要： 针对复合材料夹芯结构受到外来物体的撞击后易产生冲击损伤的特点,结合Hashin失效准则和泡沫压碎模型,在Abaqus/Explicit中建立了闭孔聚氯乙烯泡沫夹芯结构有限元模型。在验证模型正确的基础上,分析了通用接触和面面接触对载荷历程及界面分层面积的影响,并分析了面面接触下,冲击区域处(30mm×30mm)三种网格尺寸(0.5mm,1.0mm及1.5mm)对夹芯结构低速冲击响应的影响。研究结果表明,面面接触更适合模拟夹芯板的低速冲击响应。当冲击能量为4J,网格尺寸为0.5mm时,接触力载荷历程与试验得到的载荷曲线更接近,但是曲线上不能观察到载荷突降点,而1.0mm和1.5mm时载荷历程曲线上都能观察到载荷突降点,并且都出现在0.0005s附近。

关键词: 低速冲击, 泡沫夹芯板, 通用接触, 面面接触

Abstract: Composite sandwich structure is relactively high susceptibility to damage caused by foreign object impact. This paper established the finite element model of closed PVC foam-based sandwich panels in Abaqus/Explicit based on hashin criterion and crushable foam plasticity model. The precision of the model results was compared with the literature experimental results and its correction was proved. Then, the influence of general contact and surface to surface contact on the contact force history and delamination area, the meshes sizes located on the fined area on the low velocity impact response was simulated by this model. The results show that surface to surface contact is more suitable to simulate the impact response of sandwich panels. Good agreement is achieved between simulation and experiments for force-time curve for impact energy of 4 J. The threshold load can’t be observed, but it can be observed near 0.0005 seconds when the mesh sizes are 1.0 and 1.5 mm.

Key words: low-velocity impact, foam sandwich panel, general contact, surface to surface contact

中图分类号:

TB332

陈博, 张彦飞, 王智, 赵贵哲. PVC泡沫夹芯板低速冲击响应数值模拟[J]. 玻璃钢/复合材料, 2016, 0(2): 29-34.

CHEN Bo, ZHANG Yan-fei, WANG Zhi, ZHAO Gui-zhe. SIMULATING THE RESPONSE Of THE PVC FOAM SANDWICH PANELSSUBJECTED TO LOW-VELOCITY IMPACT[J]. Fiber Reinforced Plastics/Composites, 2016, 0(2): 29-34.

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