FEBio¶

Biomechanics: soft tissue, cartilage, muscle.

Install¶

export FEBIO_BINARY=/path/to/febio4

Download the program from https://febio.org/downloads/, then point openPASO at the program file itself.

Then check that openPASO sees it:

python check_install.py

What openPASO knows for FEBio¶

17 kinds of problem. Ask for any of them in plain words; the names below are what the model uses internally.

Physics	Description	Dimensions	Templates
`active_contraction`	Active contractile fibers on a passive elastic base (cardiac chamber, skeletal muscle, peristalsis)	3-D	`3d_fiber`
`biphasic`	Biphasic poroelasticity (solid + fluid phases)	3-D	`3d_confined`
`biphasic_fsi`	Coupled biphasic tissue + free-fluid FSI (blood-tissue perfusion, drug elution, cartilage-synovial fluid)	3-D	`3d_block`
`damage`	Continuum damage mechanics — progressive stiffness degradation under repeated loading (tissue tearing, cartilage wear, elastomer fatigue)	3-D	`3d_cycle`
`elasticity_mms`	3D linear-elasticity manufactured-solution (MMS) verification family — structured hex8 cube [0,L]^3, exact trig body force -div(sigma(u*)), per-node Dirichlet maps, displacement L2 order 2 expected	3-D	`3d_cube_hex8`
`fiber_reinforced`	Anisotropic fiber-reinforced hyperelasticity (HGO, transversely isotropic) — arterial wall, ligament, tendon, myocardium	3-D	`3d_hgo`
`fluid`	Incompressible Newtonian fluid via FEBio's pressure-velocity fluid solver (cardiovascular CFD)	3-D	`3d_channel`
`fluid_fsi`	Strongly-coupled monolithic FSI (arterial wall hemodynamics, cardiac chamber dynamics, valve modeling)	3-D	`3d_block`
`growth_remodeling`	Multiplicative growth-and-remodeling F = F_e * F_g (vascular adaptation, tissue scaffolds, muscle hypertrophy, tumor mechanobiology)	3-D	`3d_isotropic`
`heat`	Heat conduction (steady-state)	3-D	`3d_bar`
`hyperelasticity`	Nonlinear hyperelasticity (Neo-Hookean, Mooney-Rivlin)	3-D	`3d_cube`
`linear_elasticity`	Linear elasticity (small strain solid mechanics)	3-D	`3d_cube`
`multiphasic`	Biphasic poroelasticity + solute transport (charged-hydrated cartilage, electrolyte diffusion, drug delivery)	3-D	`3d_diffusion`
`plasticity`	Rate-independent plasticity (J2 / Hill / user-curve hardening) — cortical bone, metal implants, surgical tools	3-D	`3d_uniaxial`
`polar_fluid`	Micropolar (Cosserat) fluid with independent micro-rotation DOFs (blood-rheology, polymer suspensions, near-wall turbulence corrections)	3-D	`3d_channel`
`rigid_body`	Rigid-body material (impactors, fixtures, articulating joints, contact prescription)	3-D	`3d_pushdown`
`viscoelasticity`	Prony-series viscoelastic stress relaxation / creep response (cartilage, ligament, tendon)	3-D	`3d_stress_relax`