Fig. 3.31 Effects of a large
F ¼ 3–7 MPa in the
heterogeneous junction. (a)
φ by COMSOL. (b) ρ
P by
COMSOL
Table 3.2 Effects of F on σ
P in the heterogeneous junction
Load (MPa)
F ¼ 1
F ¼ 3
F ¼ 5
F ¼ 7
Analytical solution
Charge (μC/m
2
)
P
À
À5.4875
À7.3351
À9.1826
À11.030
P
+
À3.6400
À1.7925
0.05509
1.9026
σ
P
À1.8475
À5.5426
À9.2377
À12.933
COMSOL
Charge (μC/m
2
)
P
À
À5.4904
À7.1446
À8.7423
À10.4040
P
+
À3.6257
À1.5200
0.7291
3.0498
σ
P
À1.8647
À5.6246
À9.4714
À13.4538
84
3 Extension of Rods