Lightweight Electric/Hybrid Vehicle Design

(a)
Creepstrain dE/dt
(b)
3.0
2.0
1.0
0.05
0.03
0.01
0
Hinge mount
0 1000 3000 5000
Loading period t(h)
p /2
p /2
1O
/3
1O
/3
1O
/3
1O 10 200 N
11 110 N 11 110 N
Test appliance
100 N/mm 2
Lightweight construction materials and techniques 185
Seat belt anchorage
20 N/mm 2
Striker pin, driver’s door
Mount point for belt retractor
T=0.6 kp/cm 2
Creep modulas of elasticity Ec (kN/mm 2 )
40
30
20
15
10
9
8
7
6
5
10 -1
0
0 1000 3000
Loading period t(h)
5000
(c)
(d)
normal resin
10 0
T=0.4 kp
T=0.2 kp
IV
I
VII
1 d 1 w 1 month
10 1
10 2
10 3
Loading period t(h)
II
320 N
900 N
V
10 4
Test appliance
23°C
23°C
40°C
60°C
23°C
40°C
60°C
10 5
GF 82 -UP
GF 68 -EPweb
GF 30 -UP
resinmat
Fig. 7.7 Composites in passenger cars: (a) test forces on front door frame; (b) creep strain of GRP showing exponential
and linear regions; (c) creep of rigid PUR foam under constant shear; (d) time/temperature dependency of GRP;
(e) composite GRP floor design.
III
(e)