Material problems from the FEBio test suite. These files are run through FEBio after each compilation to ensure that it is working as intended.
Owner: FEBio Team
material
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ma01.feb
An 8x4x4 element block has its left end nodes constrained in x,y,z and its right end nodes constrained in y,z with a prescribed displacement of 1 unit in the xdirection.
material
ma02.feb
An 8x4x4 element block has its left end nodes constrained in x,y,z and its right end nodes constrained in y,z with a prescribed displacement of 1 unit in the xdirection.
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ma03.feb
A 5x6x5 element block undergoes a prescribed displacement of 1 unit in the zdirection. Nodal constraints are specified for the 1/8th symmetric representation of the expansion of a block in the zdirection.
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ma05.feb
A viscoelastic element has a prescribed xdiplacement of 0.0005 at time t=1.
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ma06.feb
A viscoelastic 10x5x5 element block has a prescribed xdisplacement of 0.005 at time t=1.
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ma07.feb
Modeling of ligament cyclic Stress Relaxation.
This problem is from the article 'Finite element implementation of anisotropic quasilinear viscoelasticity using a discrete spectrum approximation', Puso and Weiss, Journal of Biomechanical Engineering, 1997
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ma11.feb
An elastic cylindrical section with quarter symmetry is subject to a pressure that varies between 0 at time t=0 to 0.5 at time t=1.
This problem can be compared to ma10, which uses a poroelastic material.
material
ma12.feb
A 5x6x5 element block undergoes a prescribed displacement of 1 unit in the zdirection. Nodal constraints are specified for the 1/8th symmetric representation of the expansion of a block in the zdirection.
Similar to problem ma03 (linear orthotropic).
material
ma13.feb
A 5x6x5 element block undergoes a prescribed displacement of 1 unit in the zdirection. Nodal constraints are specified for the 1/8th symmetric representation of the expansion of a block in the zdirection.
Similar to problem ma03 (linear orthotropic).
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ma14.feb
A 4x4x20 element beam has a traction force of 0.01 units in the zdirection applied to its right end.
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ma15.feb
Uniaxial loading of a bar that is rotated about the Zaxis by 30 degrees. The preferred material directions are aligned along and perpendicular to the long axis of the bar.
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ma16.feb
Viscoelastic response of cantilever beam.
This problem tests the uncoupled viscoelastic formulation, since bending is a good test for mesh locking.
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ma17.feb
A biphasic quarter symmetry cylinder of 300 elements is stretched to 3% strain along the z direction (fiber direction) in 6 seconds and then held at that strain to 450 seconds. A 0 fluid pressure constraint is applied to the curved surface of the cylinder. The solid component of the biphasic material is represented by the PRLig material, and the large lateral contraction caused by the Poisson's Ratio causes a large pressure buildup and fluid to exude outward laterally from the cylinder. This results in stress relaxation, which is evident in a large peak stress which relaxes to a smaller equilibrium stress.
Max zstress = 9.75319 at t = 5.8
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ma18.feb
Circular disk subjected to uniform tensile pressure on its lateral boundary. The material is an orthotropic conewise linear elastic solid, with material axes rotated about the zaxis.
The disk deforms into an ellipse whose axes are not aligned with the coordinate directions.
material
ma19.feb
Circular disk subjected to uniform tensile pressure on its lateral boundary. The material is an cubic conewise linear elastic solid, with material axes rotated about the zaxis.
The disk deforms into a circle. The rotation of the material axes has no influence on the response for this loading configuration.
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ma20.feb
Active isotropic contraction of a cube whose passive (elastic) component is neoHookean (isotropic).
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ma21.feb
Active isotropic contraction of a cube whose passive (elastic) component is MooneyRivlin (isotropic).
Since the material is incompressible and isotropic, an isotropic contraction does not cause any deformation.
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ma22.feb
Active transversely isotropic contraction of a cube whose passive (elastic) component is neoHookean (isotropic).
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ma23.feb
Active transversely isotropic contraction of a cube whose passive (elastic) component is MooneyRivlin (isotropic).
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ma24.feb
Active uniaxial contraction of a cube whose passive (elastic) component is neoHookean (isotropic).
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ma25.feb
Active uniaxial contraction of a cube whose passive (elastic) component is MooneyRivlin (isotropic).
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ma26.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is exponential.
material
ma27.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is straindependent exponential, with type I bond kinetics.
material
ma28.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is straindependent exponential, with type II bond kinetics.
material
ma29.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is straindependent power law, with type I bond kinetics.
material
ma30.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is straindependent power law, with type II bond kinetics.
material
ma31.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a MooneyRivlin material, and the weak bonds (viscous response) also given by a MooneyRivlin material. The bond relaxation is exponential, with type I bond kinetics.
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ma32.feb
Compressive pressure loading of a cube made of porous neoHookean material.
Relative volume at final time point is 0.127
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ma33.feb
Confined compression creep loading of a cube made of a biphasic material with porousneoHookean solid matrix.
Final creep deformation (Zdisplacement of node 21) is 0.645891
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ma34.feb
HolzapfelGasserOgden material model used to analyze a circumferential iliac adventitial strip subjected to prescribed loading from 0 to 2 N.
Gasser et al. J.R. Soc. Interface (20006) 3, 1535 Figs. 11 and 12
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ma35.feb
Sinusoidal deformational loading of a cube from tension to compression. The material is reactive viscoelastic, with the strong bonds (elastic response) given by a HolmesMow material, and the weak bonds (viscous response) given by a neoHookean material. The bond relaxation is of type Fung.
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ma36.feb
This file demonstrates the use of the generic 'hyperelastic' material, which allows users to specify the strainenergy density directly.
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ma37.feb
This file demonstrates the use of the generic 'uncoupled hyperelastic' material, which allows users to specify the deviatoric strainenergy density directly.
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ma38.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: exponential
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ma39.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: exponential distortional
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ma40.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: exponential distortional with userspecified parameters
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ma41.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: exponential continuous spectrum
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ma42.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: exponential continuous spectrum with userspecified parameter
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ma43.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: continuous spectrum Malkin
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ma44.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: continuous spectrum Malkin with userspecified parameters
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ma45.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: continuous spectrum Fung
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ma46.feb
Infinitesimal strain stressrelaxation analysis on a single cube, using reactive viscoelasticity. Relaxation function: Prony
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ma47.feb
Uniaxial tensile and compressive response of a uncoupled HolmesMow material.
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ma48.feb
A 5x6x5 element block undergoes a prescribed displacement of 1 unit in the zdirection. Nodal constraints are specified for the 1/8th symmetric representation of the expansion of a block in the zdirection.
Similar to problem ma03 (linear orthotropic).
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ma49.feb
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ma50.feb
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ma51.feb
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ma52.feb
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ma53.feb
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ma54.feb
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ma55.feb
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ma56.feb
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ma57.feb
Biaxial material test of a solid mixture with two EFD distributions. Each EFD distribution has an angle of +/ 60 degrees to the material xaxis
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