From: An extension of assumed stress finite elements to a general hyperelastic framework

AS-39 | Assumed stress element with 39 stress modes, see Eq. (23) |

H1 | Isoparametric eight-node hexahedral element |

AS-18 | Assumed stress element with 18 stress modes, see Eq. (24) |

EAS-21 | Enhanced assumed strain element with 21 modes, see [2] |

AS-30 | Assumed stress element with 30 stress modes, see Eq. (25) |

EAS-9 | Enhanced assumed strain element with 9 modes, see [34] |

AS-24 | Assumed stress element with 24 stress modes, see Eq. (26) |

EAS-15 | Enhanced assumed strain element with 15 modes, see [38] |

H1P0 | Displacement-pressure approach with piecewise constant pressure, see [50] |