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. Author manuscript; available in PMC: 2017 Jul 21.
Published in final edited form as: Clin Biomech (Bristol). 2016 Nov 18;41:20–27. doi: 10.1016/j.clinbiomech.2016.11.003

Table 1.

Material properties for the soft tissues included in the model

Structures Material Constants Constitutive Models Sources

Linear elastic structures Young’s modulus (MPa) Poisson’s ratio
 Vagina and uterus 0.005 0.49 Hooke Ref [40, 41]
 Rectum 0.1 0.49
 Fat 0.05 0.49
 Bodyfill 0.05 0.49
 Muscles (excluding LAM) 2.4 0.49
 Urine 1.0e-3 0.49 Ref [13]
Hyperelastic structures

 Levator ani muscle μ1 = 0.0082 MPa α1 = 0.1803 Ogden (N = 2) Ref [31]
μ2 = 0.0216 MPa α2 = 15.112
 Bladder and urethra C10 = 0.071 MPa Yeoh Ref [16]
C20 = 0.202 MPa
C30 = 0.048 MPa
Others

 Pelvic ligaments Axial elasticity = 0.15 N/mm * Hooke Ref [18]
 Pelvic bones Rigid Rigid body Ref [15]
*

linearized