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/*************************************************************************
* Copyright (C) 2006 by Bruno Chareyre *
* bruno.chareyre@grenoble-inp.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 <lib/high-precision/Constants.hpp>
#include <core/Aabb.hpp>
#include <core/Body.hpp>
#include <core/Dispatching.hpp>
#include <core/Interaction.hpp>
#include <core/InteractionLoop.hpp>
#include <core/Scene.hpp>
#include <pkg/common/Box.hpp>
#include <pkg/common/ElastMat.hpp>
#include <pkg/common/Facet.hpp>
#include <pkg/common/ForceResetter.hpp>
#include <pkg/common/GravityEngines.hpp>
#include <pkg/common/InsertionSortCollider.hpp>
#include <pkg/common/Sphere.hpp>
#include <pkg/common/Wall.hpp>
#include <pkg/dem/ElasticContactLaw.hpp>
#include <pkg/dem/FrictPhys.hpp>
#include <pkg/dem/GlobalStiffnessTimeStepper.hpp>
#include <pkg/dem/NewtonIntegrator.hpp>
#include <pkg/dem/TriaxialCompressionEngine.hpp>
#include <pkg/dem/TriaxialStateRecorder.hpp>
#include <pkg/dem/TriaxialStressController.hpp>
#include <preprocessing/dem/Shop.hpp>
#include <pkg/common/Bo1_Aabb.hpp>
#include <pkg/common/Wall.hpp>
#include <pkg/dem/Ig2_Box_Sphere_ScGeom.hpp>
#include <pkg/dem/Ig2_Facet_Sphere_ScGeom.hpp>
#include <pkg/dem/Ig2_Sphere_Sphere_ScGeom.hpp>
#include <boost/limits.hpp>
#include <boost/numeric/conversion/bounds.hpp>
#include <preprocessing/dem/SpherePack.hpp>
//#include<pkg/dem/MicroMacroAnalyser.hpp>
#include "TriaxialTest.hpp"
namespace yade { // Cannot have #include directive inside.
CREATE_LOGGER(TriaxialTest);
YADE_PLUGIN((TriaxialTest));
TriaxialTest::~TriaxialTest() { }
bool TriaxialTest::generate(string& message)
{
message = "";
if (facetWalls && wallWalls) { LOG_WARN("Turning TriaxialTest::facetWalls off, since wallWalls were selected as well."); }
shared_ptr<Body> body;
/* if _mean_radius is not given (i.e. <=0), then calculate it from box size;
* OTOH, if it is specified, scale the box preserving its ratio and lowerCorner so that the radius can be as requested
*/
Real porosity = .8;
SpherePack sphere_pack;
if (importFilename == "") {
Vector3r dimensions = upperCorner - lowerCorner;
Real volume = dimensions.x() * dimensions.y() * dimensions.z();
long num;
if (radiusMean <= 0) num = sphere_pack.makeCloud(lowerCorner, upperCorner, -1, radiusStdDev, numberOfGrains, false /*periodic?*/, porosity);
else {
bool fixedDims[3];
fixedDims[0] = fixedBoxDims.find('x') != string::npos;
fixedDims[1] = fixedBoxDims.find('y') != string::npos;
fixedDims[2] = fixedBoxDims.find('z') != string::npos;
int nScaled = (3 - (int)fixedDims[0] + (int)fixedDims[1] + (int)fixedDims[2]);
if (nScaled == 0)
throw std::invalid_argument(
"At most 2 (not 3) axes can have fixed dimensions in fixedBoxDims if scaling for given radiusMean.");
Real boxScaleFactor = radiusMean * pow((4 / 3.) * Mathr::PI * numberOfGrains / (volume * (1 - porosity)), 1. / nScaled);
LOG_INFO("Mean radius value of " << radiusMean << " requested, scaling " << nScaled << " dimensions by " << boxScaleFactor);
dimensions[0] *= fixedDims[0] ? 1. : boxScaleFactor;
dimensions[1] *= fixedDims[1] ? 1. : boxScaleFactor;
dimensions[2] *= fixedDims[2] ? 1. : boxScaleFactor;
upperCorner = lowerCorner + dimensions;
num = sphere_pack.makeCloud(
lowerCorner, upperCorner, radiusMean, radiusStdDev, numberOfGrains, false, -1, vector<Real>(), vector<Real>(), false, seed);
}
message += "Generated a sample with " + boost::lexical_cast<string>(num) + " spheres inside box of dimensions: ("
+ boost::lexical_cast<string>(upperCorner[0] - lowerCorner[0]) + "," + boost::lexical_cast<string>(upperCorner[1] - lowerCorner[1])
+ "," + boost::lexical_cast<string>(upperCorner[2] - lowerCorner[2]) + ").";
} else {
if (radiusMean > 0) LOG_WARN("radiusMean ignored, since importFilename specified.");
sphere_pack.fromFile(importFilename);
sphere_pack.aabb(lowerCorner, upperCorner);
}
// setup scene here, since radiusMean is now at its true value (if it was negative)
scene = shared_ptr<Scene>(new Scene);
positionRootBody(scene);
createActors(scene);
if (thickness < 0) thickness = radiusMean;
if (facetWalls || wallWalls) thickness = 0;
if (!facetWalls && !wallWalls) {
// bottom box
Vector3r center = Vector3r((lowerCorner[0] + upperCorner[0]) / 2, lowerCorner[1] - thickness / 2.0, (lowerCorner[2] + upperCorner[2]) / 2);
Vector3r halfSize = Vector3r(
wallOversizeFactor * math::abs(lowerCorner[0] - upperCorner[0]) / 2 + thickness,
thickness / 2.0,
wallOversizeFactor * math::abs(lowerCorner[2] - upperCorner[2]) / 2 + thickness);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_bottom_id = body->getId();
// top box
center = Vector3r((lowerCorner[0] + upperCorner[0]) / 2, upperCorner[1] + thickness / 2.0, (lowerCorner[2] + upperCorner[2]) / 2);
halfSize = Vector3r(
wallOversizeFactor * math::abs(lowerCorner[0] - upperCorner[0]) / 2 + thickness,
thickness / 2.0,
wallOversizeFactor * math::abs(lowerCorner[2] - upperCorner[2]) / 2 + thickness);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_top_id = body->getId();
// box 1
center = Vector3r(lowerCorner[0] - thickness / 2.0, (lowerCorner[1] + upperCorner[1]) / 2, (lowerCorner[2] + upperCorner[2]) / 2);
halfSize = Vector3r(
thickness / 2.0,
wallOversizeFactor * math::abs(lowerCorner[1] - upperCorner[1]) / 2 + thickness,
wallOversizeFactor * math::abs(lowerCorner[2] - upperCorner[2]) / 2 + thickness);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_left_id = body->getId();
// box 2
center = Vector3r(upperCorner[0] + thickness / 2.0, (lowerCorner[1] + upperCorner[1]) / 2, (lowerCorner[2] + upperCorner[2]) / 2);
halfSize = Vector3r(
thickness / 2.0,
wallOversizeFactor * math::abs(lowerCorner[1] - upperCorner[1]) / 2 + thickness,
wallOversizeFactor * math::abs(lowerCorner[2] - upperCorner[2]) / 2 + thickness);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_right_id = body->getId();
// box 3
center = Vector3r((lowerCorner[0] + upperCorner[0]) / 2, (lowerCorner[1] + upperCorner[1]) / 2, lowerCorner[2] - thickness / 2.0);
halfSize = Vector3r(
wallOversizeFactor * math::abs(lowerCorner[0] - upperCorner[0]) / 2 + thickness,
wallOversizeFactor * math::abs(lowerCorner[1] - upperCorner[1]) / 2 + thickness,
thickness / 2.0);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_back_id = body->getId();
// box 4
center = Vector3r((lowerCorner[0] + upperCorner[0]) / 2, (lowerCorner[1] + upperCorner[1]) / 2, upperCorner[2] + thickness / 2.0);
halfSize = Vector3r(
wallOversizeFactor * math::abs(lowerCorner[0] - upperCorner[0]) / 2 + thickness,
wallOversizeFactor * math::abs(lowerCorner[1] - upperCorner[1]) / 2 + thickness,
thickness / 2.0);
createBox(body, center, halfSize, true);
scene->bodies->insert(body);
triaxialcompressionEngine->wall_front_id = body->getId();
}
size_t imax = sphere_pack.pack.size();
for (size_t i = 0; i < imax; i++) {
const SpherePack::Sph& sp(sphere_pack.pack[i]);
LOG_DEBUG("sphere (" << sp.c << " " << sp.r << ")");
createSphere(body, sp.c, sp.r, false, true);
scene->bodies->insert(body);
}
if (defaultDt < 0) {
defaultDt = Shop::PWaveTimeStep(scene);
scene->dt = defaultDt;
globalStiffnessTimeStepper->defaultDt = defaultDt;
LOG_INFO("Computed default (PWave) timestep " << defaultDt);
}
return true;
}
void TriaxialTest::createSphere(shared_ptr<Body>& body, Vector3r position, Real radius, bool /*big*/, bool /*dynamic*/)
{
body = shared_ptr<Body>(new Body);
body->groupMask = 2;
shared_ptr<Aabb> aabb(new Aabb);
shared_ptr<Sphere> iSphere(new Sphere);
body->state->blockedDOFs = State::DOF_NONE;
body->state->mass = 4.0 / 3.0 * Mathr::PI * radius * radius * radius * density;
body->state->inertia = Vector3r(
2.0 / 5.0 * body->state->mass * radius * radius,
2.0 / 5.0 * body->state->mass * radius * radius,
2.0 / 5.0 * body->state->mass * radius * radius);
body->state->pos = position;
shared_ptr<FrictMat> mat(new FrictMat);
mat->young = sphereYoungModulus;
mat->poisson = sphereKsDivKn;
mat->frictionAngle = compactionFrictionDeg * Mathr::PI / 180.0;
aabb->color = Vector3r(0, 1, 0);
iSphere->radius = radius;
//iSphere->color = Vector3r(0.4,0.1,0.1);
iSphere->color = Vector3r(math::unitRandom(), math::unitRandom(), math::unitRandom());
iSphere->color.normalize();
body->shape = iSphere;
body->bound = aabb;
body->material = mat;
}
void TriaxialTest::createBox(shared_ptr<Body>& body, Vector3r position, Vector3r extents, bool wire)
{
body = shared_ptr<Body>(new Body);
body->groupMask = 2;
body->state->blockedDOFs = State::DOF_ALL;
shared_ptr<Aabb> aabb(new Aabb);
aabb->color = Vector3r(1, 0, 0);
body->bound = aabb;
body->state->pos = position;
shared_ptr<FrictMat> mat(new FrictMat);
mat->young = sphereYoungModulus;
mat->poisson = sphereKsDivKn;
mat->frictionAngle = boxFrictionDeg * Mathr::PI / 180.0;
body->material = mat;
if (!facetWalls && !wallWalls) {
shared_ptr<Box> iBox(new Box);
iBox->extents = extents;
iBox->wire = wire;
iBox->color = Vector3r(1, 1, 1);
body->shape = iBox;
}
// guess the orientation
int ax0 = extents[0] == 0 ? 0 : (extents[1] == 0 ? 1 : 2);
int ax1 = (ax0 + 1) % 3, ax2 = (ax0 + 2) % 3;
if (facetWalls) {
Vector3r corner = position - extents; // "lower right" corner, with 90 degrees
Vector3r side1(Vector3r::Zero());
side1[ax1] = 4 * extents[ax1];
Vector3r side2(Vector3r::Zero());
side2[ax2] = 4 * extents[ax2];
Vector3r v[3];
v[0] = corner;
v[1] = corner + side1;
v[2] = corner + side2;
Vector3r cog = Shop::inscribedCircleCenter(v[0], v[1], v[2]);
shared_ptr<Facet> iFacet(new Facet);
for (int i = 0; i < 3; i++) {
iFacet->vertices[i] = v[i] - cog;
}
iFacet->color = Vector3r(1, 1, 1);
body->shape = iFacet;
}
if (wallWalls) {
shared_ptr<Wall> wall(new Wall);
wall->sense = 0; // interact from both sides, since unspecified here
wall->axis = ax0;
body->shape = wall;
}
}
void TriaxialTest::createActors(shared_ptr<Scene>& scene2)
{
// declaration of ‘scene’ shadows a member of ‘yade::TriaxialTest’ [-Werror=shadow]
shared_ptr<IGeomDispatcher> interactionGeometryDispatcher(new IGeomDispatcher);
interactionGeometryDispatcher->add(new Ig2_Sphere_Sphere_ScGeom);
interactionGeometryDispatcher->add(new Ig2_Facet_Sphere_ScGeom);
interactionGeometryDispatcher->add(new Ig2_Box_Sphere_ScGeom);
shared_ptr<IPhysDispatcher> interactionPhysicsDispatcher(new IPhysDispatcher);
shared_ptr<IPhysFunctor> ss(new Ip2_FrictMat_FrictMat_FrictPhys);
interactionPhysicsDispatcher->add(ss);
shared_ptr<GravityEngine> gravityCondition(new GravityEngine);
gravityCondition->gravity = gravity;
globalStiffnessTimeStepper = shared_ptr<GlobalStiffnessTimeStepper>(new GlobalStiffnessTimeStepper);
globalStiffnessTimeStepper->timeStepUpdateInterval = timeStepUpdateInterval;
globalStiffnessTimeStepper->defaultDt = defaultDt;
// moving walls to regulate the stress applied + compress when the packing is dense an stable
//cerr << "triaxialcompressionEngine = shared_ptr<TriaxialCompressionEngine> (new TriaxialCompressionEngine);" << std::endl;
triaxialcompressionEngine = shared_ptr<TriaxialCompressionEngine>(new TriaxialCompressionEngine);
//This prevent the deprecation warning. In fact this preprocessor in itself is becoming deprecated
triaxialcompressionEngine->warn = 1;
triaxialcompressionEngine->stiffnessUpdateInterval = wallStiffnessUpdateInterval; // = stiffness update interval
triaxialcompressionEngine->radiusControlInterval = radiusControlInterval; // = stiffness update interval
triaxialcompressionEngine->sigmaIsoCompaction = sigmaIsoCompaction;
triaxialcompressionEngine->sigmaLateralConfinement = sigmaLateralConfinement;
triaxialcompressionEngine->max_vel = maxWallVelocity;
triaxialcompressionEngine->thickness = thickness;
triaxialcompressionEngine->strainRate = strainRate;
triaxialcompressionEngine->StabilityCriterion = StabilityCriterion;
triaxialcompressionEngine->autoCompressionActivation = autoCompressionActivation;
triaxialcompressionEngine->autoUnload = autoUnload;
triaxialcompressionEngine->autoStopSimulation = autoStopSimulation;
triaxialcompressionEngine->internalCompaction = internalCompaction;
triaxialcompressionEngine->maxMultiplier = maxMultiplier;
triaxialcompressionEngine->finalMaxMultiplier = finalMaxMultiplier;
triaxialcompressionEngine->Key = Key;
triaxialcompressionEngine->noFiles = noFiles;
triaxialcompressionEngine->frictionAngleDegree = sphereFrictionDeg;
triaxialcompressionEngine->fixedPoroCompaction = false;
triaxialcompressionEngine->fixedPorosity = 1;
// recording global stress
if (recordIntervalIter > 0 && !noFiles) {
triaxialStateRecorder = shared_ptr<TriaxialStateRecorder>(new TriaxialStateRecorder);
triaxialStateRecorder->file = WallStressRecordFile + Key;
triaxialStateRecorder->iterPeriod = recordIntervalIter;
}
scene2->engines.clear();
scene2->engines.push_back(shared_ptr<Engine>(new ForceResetter));
shared_ptr<InsertionSortCollider> collider(new InsertionSortCollider);
scene2->engines.push_back(collider);
collider->verletDist = .5 * radiusMean;
collider->boundDispatcher->add(new Bo1_Sphere_Aabb);
collider->boundDispatcher->add(new Bo1_Box_Aabb);
collider->boundDispatcher->add(new Bo1_Facet_Aabb);
collider->boundDispatcher->add(new Bo1_Wall_Aabb);
shared_ptr<InteractionLoop> ids(new InteractionLoop);
ids->geomDispatcher = interactionGeometryDispatcher;
ids->physDispatcher = interactionPhysicsDispatcher;
ids->lawDispatcher = shared_ptr<LawDispatcher>(new LawDispatcher);
shared_ptr<Law2_ScGeom_FrictPhys_CundallStrack> see(new Law2_ScGeom_FrictPhys_CundallStrack);
ids->lawDispatcher->add(see);
scene2->engines.push_back(ids);
scene2->engines.push_back(globalStiffnessTimeStepper);
scene2->engines.push_back(triaxialcompressionEngine);
if (recordIntervalIter > 0 && !noFiles) scene2->engines.push_back(triaxialStateRecorder);
shared_ptr<NewtonIntegrator> newton(new NewtonIntegrator);
newton->damping = dampingForce;
scene2->engines.push_back(newton);
}
void TriaxialTest::positionRootBody(shared_ptr<Scene>& /*scene*/) { }
} // namespace yade
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