Composite Materials Research Progress

186
Giangiacomo Minak and Andrea Zucchelli
Table 4. Lower, upper and intermediate strain values used for the stress-strain curve
discretization, Elastic modulus (Young) and Damage (D)
UD
AP
QI1
QI2
QI3
Low
strain
Up
strain
Mean Values
Ref.
Strain
Young
[Mpa]
0.0000 0.0030 0.0015 191200 0.029
0.0031 0.0097 0.0064 137500 0.302
0.0104 0.0109 0.0106 105653 0.464
0.0120 0.0154 0.0137 88522 0.551
0.0154 0.0190 0.0172 31211 0.842
0.0000 0.0006 0.0003 22865 0.006
0.0012 0.0037 0.0025 6340 0.724
0.0085 0.0137 0.0111 1666 0.928
0.0252 0.0307 0.0280 329 0.986
0.0308 0.0839 0.0573 182 0.992
0.0000 0.0015 0.0008 74300 0.047
0.0015 0.0031 0.0023 71600 0.082
0.0031 0.0040 0.0035 62000 0.205
0.0060 0.0072 0.0066 45175 0.421
0.0081 0.0086 0.0083 32976 0.577
0.0089 0.0115 0.0102 22151 0.716
0.0000 0.0029 0.0015 72100 0.051
0.0034 0.0041 0.0038 67050 0.118
0.0044 0.0075 0.0060 59050 0.223
0.0080 0.0087 0.0084 41022 0.460
0.0087 0.0099 0.0093 28195 0.629
0.0000 0.0003 0.0001 77608 0.005
0.0003 0.0007 0.0005 53487 0.314
0.0008 0.0016 0.0012 45048 0.422
0.0016 0.0035 0.0025 27500 0.647
0.0041 0.0048 0.0045 24973 0.680
0.0050 0.0114 0.0082 20900 0.732
0.0114 0.0120 0.0117 12997 0.833
D