4b665fa82b
URDF import demo: add COLLADA .dae file support add FiniteElementMethod demo, extracted from the OpenTissue library (under the zlib license) don't crash if loading an invalid STL file add comparison with Assimp for COLLADA file loading (disabled by default, to avoid library dependency) Gwen: disable some flags that make the build incompatible
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
#ifndef OPENTISSUE_DYNAMICS_FEM_FEM_INITIALIZE_STIFFNESS_ELEMENTS_H
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#define OPENTISSUE_DYNAMICS_FEM_FEM_INITIALIZE_STIFFNESS_ELEMENTS_H
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//
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// OpenTissue Template Library
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// - A generic toolbox for physics-based modeling and simulation.
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// Copyright (C) 2008 Department of Computer Science, University of Copenhagen.
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//
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// OTTL is licensed under zlib: http://opensource.org/licenses/zlib-license.php
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//
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#include <OpenTissue/configuration.h>
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#include <OpenTissue/dynamics/fem/fem_compute_ke.h>
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#include <OpenTissue/dynamics/fem/fem_compute_volume.h>
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namespace OpenTissue
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{
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namespace fem
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{
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namespace detail
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{
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/**
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*
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*
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* NOTE: Material parameters (young modulus and poisson ratio) must have
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* been set prior to invoking this function.
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*
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* @param begin
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* @param end
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*/
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template < typename tetrahedron_type >
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inline void initialize_stiffness_elements_single(tetrahedron_type* T)
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{
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{
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T->m_e10 = T->j()->m_model_coord - T->i()->m_model_coord;
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T->m_e20 = T->k()->m_model_coord - T->i()->m_model_coord;
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T->m_e30 = T->m()->m_model_coord - T->i()->m_model_coord;
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T->m_V = compute_volume(T->m_e10, T->m_e20, T->m_e30);
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//T->m_V = compute_volume(
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// T->i()->m_model_coord,
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// T->j()->m_model_coord,
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// T->k()->m_model_coord,
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// T->m()->m_model_coord
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// );
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assert(T->m_V>0 || !"initialize_stiffness_elements(): Element with negative volume is encountered! Maybe you got a bad mesh?");
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T->m_Re = math::diag(1.0);
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//compute_Ke(T->m_B, T->m_D, T->m_V, T->m_Ke);
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compute_Ke(
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T->node(0)->m_model_coord,
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T->node(1)->m_model_coord,
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T->node(2)->m_model_coord,
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T->node(3)->m_model_coord,
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T->m_young, T->m_poisson,
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T->m_Ke
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);
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}
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}
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} // namespace detail
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} // namespace fem
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} // namespace OpenTissue
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//OPENTISSUE_DYNAMICS_FEM_FEM_INITIALIZE_STIFFNESS_ELEMENTS_H
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#endif
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