Technical information

5-12
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-70-60-50-40-30-20-10 0
Offset [in.]
Strain in X (z=5", x=0) [
μ
strains]
Computed Response
Isotropic Case
G1_measured
G3_measured
-560
-480
-400
-320
-240
-160
-80
0
80
160
-70-60-50-40-30-20-10 0
Offset [in.]
Strain in Y (z=5", x=0) [
μ
strains]
Computed Response
Isotropic Case
G2_measured
G4_measured
-30
0
30
60
90
120
150
180
-70 -60 -50 -40 -30 -20 -10 0
Offset [in.]
Strain in X (z=5", x=24") [
μ
strains]
Computed Response
Isotropic Case
G6_measured
G8_measured
-120
-100
-80
-60
-40
-20
0
20
40
-70 -60 -50 -40 -30 -20 -10 0
Offset [in.]
Strain in Y (z=5", x=24") [
μ
strains]
Computed Response
Isotropic Case
G5_measured
G7_measured
-10
-5
0
5
10
15
20
25
30
35
40
-70-60-50-40-30-20-10 0
Offset [in.]
Stress in Z (z=5", x=0) [psi]
Computed Response
Isotropic Case
1178_measured
1185_measured
-3
0
3
6
9
12
15
18
21
-70-60-50-40-30-20-10 0
Offset [in.]
Stress in Z (z=11", x=0) [psi]
Computed Response
Isotropic Case
1179_measured
1184_measured
Figure 5.1.3: Comparison of measured resilient responses in the APT during pass
#5,000 with responses computed using the anisotropic layered model (isotropic case is
reproduced from Figure 4.2.2).
5.1.3 NCAT Response Prediction
In this subsection the anisotropic layered model is applied to forecast resilient responses
measured at NCAT. Guided by the methodology developed in Chapter 4, the
computations are done with the calibrated properties shown in Table 5.1.1; the HMA
moduli are adjusted to account for the differences in loading speed and temperature
(relative to the APT experiment). For the anisotropic HMA case, there is an additional
assumption that the ratio
xz
EE /
is unaffected by loading speed and temperature (i.e.,
remains equal to 0.42).