Subcutaneous Fat Thickness Remarkably Influences Contact Pressure and Load Distribution of Buttock in Seated Posture

Table 1

Material properties of the buttock model.

Component	Formulation	Material	Density	References
Bone	Rigid	—	1000 kg/m^3	[20]
Muscle	Ogden hyperelastic	μ1 = 1907.4 Pa, α1 = 4.6	1100 kg/m^3	[20]
Fat	Ogden hyperelastic	μ1 = 1166.7 Pa, α1 = 16.2	920 kg/m^3	[20]
Skin	Elastic	E = 0.15 MPa,  = 0.46	1100 kg/m^3	[21]
Pelvic cavity	Elastic	E = 0.01 MPa,  = 0.49	1060 kg/m^3	[22]
Cushion	Elastic	E = 2000, 0.1, 0.05, 0.025, 0.0153 MPa (from rigid to soft),  = 0	—	[23–25]