/// <summary>
/// Converts one area load applied on a BarElement with a series of equivalent ConcentratedLoads
/// </summary>
/// <param name="element">The element.</param>
/// <param name="load">The load.</param>
/// <param name="cse">The cse.</param>
public static void AreaLoad2ConcentratedLoads(BarElement element, PartialNonUniformLoad load, LoadCase cse)
{
var n = 1000;
var d = element.EndNode.Location - element.StartNode.Location;
var l = d.Length;
for (var i = 0; i < n; i++)
{
var dx = l / n;
var x = i * dx + 0.5 * dx;
var cn = new ConcentratedLoad();
var xi = (2 * x - l) / l;
cn.ForceIsoLocation = new IsoPoint(xi, 0, 0);
var mag = load.GetMagnitudeAt(element, cn.ForceIsoLocation);
var f = load.Direction * mag * dx;
cn.Force = new Force(f, Vector.Zero);
cn.Case = cse;
cn.CoordinationSystem = load.CoordinationSystem;
if (mag != 0.0)
{
element.Loads.Add(cn);
}
}
}
public static void test1()
{
var load = new PartialNonUniformLoad(); //creating new instance of load
load.SeverityFunction = Mathh.Polynomial.FromPoints(-1, 5, 1, 7);
load.StartLocation = new IsoPoint(-0.5); //set locations of trapezoidal load
load.EndLocation = new IsoPoint(0.5); //set locations of trapezoidal load
load.Direction = Vector.K; //set direction
load.CoordinationSystem =
CoordinationSystem.Global; //set coordination system
var model = new Model();
model.Nodes.Add(new Node(0, 0, 0)
{
Label = "n0"
});
model.Nodes.Add(new Node(4, 0, 0)
{
Label = "n1"
});
model.Elements.Add(new BarElement(model.Nodes["n0"], model.Nodes["n1"])
{
Label = "e0"
});
model.Nodes["n0"].Constraints =
model.Nodes["n1"].Constraints =
Constraints.Fixed;
var sec = new Sections.UniformGeometric1DSection(SectionGenerator.GetISetion(0.24, 0.67, 0.01, 0.006));
var mat = Materials.UniformIsotropicMaterial.CreateFromYoungPoisson(210e9, 0.3);
(model.Elements["e0"] as BarElement).Material = mat;
(model.Elements["e0"] as BarElement).Section = sec;
var u1 = load;
model.Elements["e0"].Loads.Add(u1);
model.Solve_MPC();
var n1Force = model.Nodes["n1"].GetSupportReaction();
Console.WriteLine("support reaction of n1: {0}", n1Force);
var elm = model.Elements[0] as BarElement;
var frc = elm.GetGlobalEquivalentNodalLoads(u1);
}
