92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
// Copyright 2015. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: ryan.latture@gmail.com (Ryan Latture)
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#include <iostream>
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#include "threed_beam_fea.h"
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int main(int argc, char *argv[])
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{
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using namespace fea;
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double pi = 3.14159265358979323846;
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// define the vector perpendicular to the beam elements
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std::vector<double> normal_vec = {0.0, 1.0, 0.0};
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// set up the properties for the elements
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double E_o = 1000.0; // Young's modulus
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double G_o = 100.0; // shear modulus
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// assume circular cross-section
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double radius = 0.1;
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double area = pi * radius * radius;
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double second_moment_area = pi * pow(radius, 4.0) / 4.0;
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double J = 2.0 * second_moment_area;
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// define elemental properties
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double EA = E_o * area; // extensional stiffness
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double EIz = E_o * second_moment_area; // bending stiffness along z-axis
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double EIy = E_o * second_moment_area; // bending stiffness along y-axis
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double GJ = G_o * J; // torsional stiffness
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Props props(EA, EIz, EIy, GJ, normal_vec);
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// define the (x, y, z) coordinate of the nodes
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std::vector<Node> nodes = {Node(0.0, 0.0, 0.0), Node(1.0, 0.0, 0.0), Node(1.0, 0.0, 0.0), Node(2.0, 0.0, 0.0)};
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// define which nodes are connected to form elements
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std::vector<Elem> elems = {Elem(0, 1, props), Elem(2, 3, props)};
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// tie the second and third nodes with linear springs
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std::vector<Tie> ties = {Tie(1, 2, 100.0, 100.0)};
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// assemble nodes and elements into a Job for analysis
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Job job(nodes, elems);
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// fix all DOFs of first node
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BC bc1(0, 0, 0.0);
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BC bc2(0, 1, 0.0);
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BC bc3(0, 2, 0.0);
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BC bc4(0, 3, 0.0);
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BC bc5(0, 4, 0.0);
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BC bc6(0, 5, 0.0);
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std::vector<BC> bcs = {bc1, bc2, bc3, bc4, bc5, bc6};
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// apply force on node at (2,0,0)
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std::vector<Force> forces= {Force(3, DOF::DISPLACEMENT_Y, 0.01)};
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// initialize empty vector of equation constraints
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std::vector<Equation> equations;
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// use default options
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Options opts;
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// solve for nodal displacements
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Summary summary = solve(job, bcs, forces, ties, equations, opts);
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// write report to terminal
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std::cout << summary.FullReport() << std::endl;
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return 0;
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}
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