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/*************************************************************************
* Copyright (C) 2009 by Luc Sibille *
* luc.sibille@univ-nantes.fr *
* *
* This program is free software; it is licensed under the terms of the *
* GNU General Public License v2 or later. See file LICENSE for details. *
*************************************************************************/
#include "ThreeDTriaxialEngine.hpp"
#include <lib/high-precision/Constants.hpp>
#include <core/Omega.hpp>
#include <core/Scene.hpp>
#include <lib/base/Math.hpp>
#include <core/Interaction.hpp>
#include <pkg/common/ElastMat.hpp>
#include <pkg/common/Sphere.hpp>
#include <pkg/dem/FrictPhys.hpp>
#include <boost/lambda/lambda.hpp>
#include <preprocessing/dem/Shop.hpp>
namespace yade { // Cannot have #include directive inside.
class Ip2_CohFrictMat_CohFrictMat_CohFrictPhys;
CREATE_LOGGER(ThreeDTriaxialEngine);
YADE_PLUGIN((ThreeDTriaxialEngine));
ThreeDTriaxialEngine::~ThreeDTriaxialEngine() { }
void ThreeDTriaxialEngine::action()
{
static int warn = 0;
if (!warn++) LOG_WARN("This engine is deprecated, please switch to TriaxialStressController if you expect long term support.")
if (firstRun) {
LOG_INFO("First run, will initialize!");
if (updateFrictionAngle) setContactProperties(frictionAngleDegree);
height0 = height;
depth0 = depth;
width0 = width;
if (stressControl_1) {
wall_right_activated = true;
wall_left_activated = true; //are the right walls for direction 1?
} else {
wall_right_activated = false;
wall_left_activated = false;
}
if (stressControl_2) {
wall_bottom_activated = true;
wall_top_activated = true;
} else {
wall_bottom_activated = false;
wall_top_activated = false;
}
if (stressControl_3) {
wall_front_activated = true;
wall_back_activated = true; //are the right walls for direction 3?
} else {
wall_front_activated = false;
wall_back_activated = false;
}
//internalCompaction=false; //is needed to avoid a control for internal compaction by the TriaxialStressController engine
// isAxisymetric=false; //is needed to avoid a stress control according the parameter sigma_iso (but according to sigma1, sigma2 and sigma3)
firstRun = false;
}
const Real& dt = scene->dt;
if (!stressControl_1) // control in strain if wanted
{
if (currentStrainRate1 != strainRate1) currentStrainRate1 += (strainRate1 - currentStrainRate1) * (1 - strainDamping);
State* p_left = Body::byId(wall_left_id, scene)->state.get();
p_left->pos += 0.5 * currentStrainRate1 * width * translationAxisx * dt;
State* p_right = Body::byId(wall_right_id, scene)->state.get();
p_right->pos -= 0.5 * currentStrainRate1 * width * translationAxisx * dt;
} else {
if (currentStrainRate1 != strainRate1) currentStrainRate1 += (strainRate1 - currentStrainRate1) * (1 - strainDamping);
max_vel1 = 0.5 * currentStrainRate1 * width;
}
if (!stressControl_2) // control in strain if wanted
{
if (currentStrainRate2 != strainRate2) currentStrainRate2 += (strainRate2 - currentStrainRate2) * (1 - strainDamping);
State* p_bottom = Body::byId(wall_bottom_id, scene)->state.get();
p_bottom->pos += 0.5 * currentStrainRate2 * height * translationAxisy * dt;
State* p_top = Body::byId(wall_top_id, scene)->state.get();
p_top->pos -= 0.5 * currentStrainRate2 * height * translationAxisy * dt;
} else {
if (currentStrainRate2 != strainRate2) currentStrainRate2 += (strainRate2 - currentStrainRate2) * (1 - strainDamping);
max_vel2 = 0.5 * currentStrainRate2 * height;
}
if (!stressControl_3) // control in strain if wanted
{
if (currentStrainRate3 != strainRate3) currentStrainRate3 += (strainRate3 - currentStrainRate3) * (1 - strainDamping);
State* p_back = Body::byId(wall_back_id, scene)->state.get();
p_back->pos += 0.5 * currentStrainRate3 * depth * translationAxisz * dt;
State* p_front = Body::byId(wall_front_id, scene)->state.get();
p_front->pos -= 0.5 * currentStrainRate3 * depth * translationAxisz * dt;
} else {
if (currentStrainRate3 != strainRate3) currentStrainRate3 += (strainRate3 - currentStrainRate3) * (1 - strainDamping);
max_vel3 = 0.5 * currentStrainRate3 * depth;
}
TriaxialStressController::action(); // this function is called to perform the external stress control or the internal compaction
}
void ThreeDTriaxialEngine::setContactProperties(Real frictionDegree)
{
scene = Omega::instance().getScene().get();
shared_ptr<BodyContainer>& bodies = scene->bodies;
for (const auto& b : *scene->bodies) {
if (b->isDynamic()) YADE_PTR_CAST<FrictMat>(b->material)->frictionAngle = frictionDegree * Mathr::PI / 180.0;
}
FOREACH(const shared_ptr<Interaction>& ii, *scene->interactions)
{
if (!ii->isReal()) continue;
const shared_ptr<FrictMat>& sdec1 = YADE_PTR_CAST<FrictMat>((*bodies)[(Body::id_t)((ii)->getId1())]->material);
const shared_ptr<FrictMat>& sdec2 = YADE_PTR_CAST<FrictMat>((*bodies)[(Body::id_t)((ii)->getId2())]->material);
//FIXME - why dynamic_cast fails here?
FrictPhys* contactPhysics = YADE_CAST<FrictPhys*>((ii)->phys.get());
Real fa = sdec1->frictionAngle;
Real fb = sdec2->frictionAngle;
contactPhysics->tangensOfFrictionAngle = math::tan(math::min(fa, fb));
}
}
} // namespace yade
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