玻璃纤维增强pCBT树脂基复合材料低速冲击的数值研究.doc

文档介绍：
玻璃纤维增强 pCBT 树脂基复合材料低速冲
击的数值研究#
杨斌,章继峰**
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(哈尔滨工程大学智能结构与先进复合材料实验室)
摘要:本文制备了热塑性玻璃纤维增强 pCBT 树脂基复合材料,通过力学实验测试得出冲击
仿真过程中所需要的力学参数。在此基础上,建立了分析纤维增强树脂基复合材料层合板在
低速冲击作用下损伤和变形行为的有限元模型。分别采用基于最大应力,最大应变以及三维
Hashin 准则编写了用于冲击计算的 VUMAT 子程序。同时,针对铺层板的层间脱层损伤,
使用内聚力单元模拟层间粘接区域。计算模型通过有限元软件 ABAQUS/ Explicit 的材料模
型用户子程序实现,通过仿真得出了该复合材料在冲击载荷下的力-时间和速度-时间曲线。
关键词:固体力学;pCBT/玻璃纤维复合材料;冲击载荷;失效准则;VUMAT 子程序
中图分类号:TB331
Simulation of pCBT/posites under low velocity
impact
YANG Bin1, ZHANG Jifeng2
(1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China;
2. College of Aerospace and Civil Engineering, Harbin Engineering University)
Abstract: In the present paper, pCBT/posites were prepared and the mechanical parameters
used in the simulation were obtained through experimental tests. Afterwards, the simulation modle for
posites under low velocity impact was built. Maximum stress, strain and 3D Hashin failure
criterion piled in the VUMAT subroutine for the impact test. Moreover, in order to got the
delamination of posites under impact, cohesive element was adopted into each layers. The
modle was calculated in ABAQUS/ Explicit and the load-time, velocity-time curves were achieved.
Key words: solid mechanics;pCBT/posites; impact load; failure criterion; VUMAT subroutine
0 引言
复合材料层状结构,如加筋板、柱壳、波纹板及层合梁等,在飞机、汽车及其它机械结构
上日益得到广泛应用[1,2]。先进