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Element.cpp
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Fri, Jun 28, 19:13
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rGOOSEFEM GooseFEM
Element.cpp
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#include <catch2/catch.hpp>
#include <xtensor/xrandom.hpp>
#include <xtensor/xmath.hpp>
#include <GooseFEM/GooseFEM.h>
#define ISCLOSE(a,b) REQUIRE_THAT((a), Catch::WithinAbs((b), 1.e-12));
TEST_CASE("GooseFEM::Element", "Element.h")
{
SECTION("QuadratureBase - AsTensor - e.g. Quad4")
{
size_t nelem = 3;
size_t nip = 4;
GooseFEM::Element::QuadratureBase<4, 2, 2> quad(nelem, nip);
xt::xtensor<double, 2> qscalar = xt::random::rand<double>({nelem, nip});
auto qtensor = quad.AsTensor<2>(qscalar);
REQUIRE(xt::has_shape(quad.AllocateQscalar<double>(), qscalar.shape()));
REQUIRE(xt::has_shape(quad.AllocateQscalar<double>(0.0), qscalar.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<2, double>(), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<2, double>(0.0), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<double>(2), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<double>(2, 0.0), qtensor.shape()));
for (size_t e = 0; e < nelem; ++e) {
for (size_t q = 0; q < nip; ++q) {
REQUIRE(xt::allclose(xt::view(qtensor, xt::keep(e), xt::keep(q)), qscalar(e, q)));
}
}
}
SECTION("QuadratureBase - AsTensor - e.g. Hex8")
{
size_t nelem = 6;
size_t nip = 8;
GooseFEM::Element::QuadratureBase<8, 3, 3> quad(nelem, nip);
xt::xtensor<double, 2> qscalar = xt::random::rand<double>({nelem, nip});
auto qtensor = quad.AsTensor<2>(qscalar);
REQUIRE(xt::has_shape(quad.AllocateQscalar<double>(), qscalar.shape()));
REQUIRE(xt::has_shape(quad.AllocateQscalar<double>(0.0), qscalar.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<2, double>(), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<2, double>(0.0), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<double>(2), qtensor.shape()));
REQUIRE(xt::has_shape(quad.AllocateQtensor<double>(2, 0.0), qtensor.shape()));
for (size_t e = 0; e < nelem; ++e) {
for (size_t q = 0; q < nip; ++q) {
REQUIRE(xt::allclose(xt::view(qtensor, xt::keep(e), xt::keep(q)), qscalar(e, q)));
}
}
}
}
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