碳纤维增强复合材料包裹强化形式对钢管横向冲击性能的影响

doi:10.13229/j.cnki.jdxbgxb20200939

Abstract

Abstract:

In view of the fact that carbon fiber reinforced polymer（CFRP） partially wrapped steel tube can realize further lightweight on the premise of improving the performance of steel tube， the transverse impact simulation of CFRP reinforced steel tube was carried out， and the influence of strengthening form and size of CFRP wrapped steel tube on the transverse impact performance of steel tube was obtained. Based on the Hashin composite failure criterion and Ductile metal failure criterion， the simulation model of the drop hammer transverse impact of CFRP fully wrapped steel tube was established， and the validity of the model was verified. The relationship between the size of CFRP and the impact strength of steel tube was studied when CFRP was pasted axially on the steel tube surface， circumferentially on the impact side and circumferentially on the back of the impact side. The transverse impact simulation of drop hammer was carried out and the distribution of steel tube damage under impact was studied，the maximum displacement of the strengthened steel tube and the energy absorption of CFRP were compared under different bonding lengths. The results show that the strengthening influence of CFRP axial bonding size is more obvious；the impact resistance of the steel tube strengthened by CFRP is basically the same as that of the steel tube fully wrapped by CFRP， when the length of CFRP is pasted axially half of the span and the full length of the steel tube circumference or the length of CFRP is pasted axially 87.5% of the circumference and full length of span.

Key words: vehicle engineering, carbon fiber reinforced polymer, strengthened steel tube, impact resistance

CLC Number:

TB33

Wei-min ZHUANG,Shen CHEN,Di WU. Influence of strengthening form of CFRP on transverse impact performance of steel tube[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(4): 819-828.

Figures/Tables 23

Fig.1

Fig.2

Fig.3

Fig.4

Table 1

Material parameters of steel tubes"

参数	数值
密度 $ρ / (k g ? m - 3)$	7850
弹性模量 $E / G P a$	210
泊松比 $υ$	0.3
屈服强度 $σ s / M P a$	317
拉伸强度 $σ b / M P a$	366

Table 1

Table 2

Material parameters of CFRP"

参数	数值
密度 $ρ / (k g ? m - 3)$	1500
纵向弹性模量 $E 1 / G P a$	75
横向弹性模量 $E 2 / G P a$	8.42
12方向剪切模量 $G 12 / G P a$	4.48
13方向剪切模量 $G 13 / G P a$	4.48
23方向剪切模量 $G 23 / G P a$	4
主泊松比 $υ 12$	0.307
纵向拉伸强度 $X t / M P a$	987
纵向压缩强度 $X c / M P a$	500
横向拉伸强度 $Y t / M P a$	42
横向压缩强度 $Y c / M P a$	172
剪切强度 $S 12 / M P a$	90

Table 2

Table 3

Material parameters of adhesive"

参数	数值
密度 $ρ / (k g ? m - 3)$	1400
弹性模量 $E / G P a$	3
拉伸强度 $N m a x / M P a$	30
剪切强度 $S m a x 、 T m a x / M P a$	45

Table 3

Fig.5

Fig.6

Table 4

Section size of experiment and simulation"

截面尺寸	实验/mm	仿真/mm	误差/%
$d$	115.9	104.37	9.95
$d'$	80.0	80.13	0.16

Table 4

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Fig.17

Fig.18

Fig.19

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