Parameters of the Methods of the PartialNonUniformLoad Class

[MLiranzo]

Hello epsi1on, After trying to use the PartialTrapezoidalLoad class without results, I accessed the PartialTrapezoidalLoadExamples example to try to replace the PartialTrapezoidalLoad class; However, it is not clear with the parameters used:

load.SeverityFunction = Mathh.SingleVariablePolynomial.FromPoints(-1, 5, 1, 7); // -1,5,1,7 ?? load.StartLocation = new IsoPoint(-0.5); // -0.5 ?? load.EndLocation = new IsoPoint(0.5); // 0.5 ??

You could add a graphic diagram, even freehand. In another sense, I don't know why the PartialTrapezoidalLoad class is not recognized? it throws the following error message "The type or namespace name PartialTrapezoidalLoad could not be found ..."

[epsi1on]

The class for non uniform load is renamed since. It's name is PartialNonUniformLoad. https://github.com/BriefFiniteElementNet/BriefFiniteElement.Net/blob/master/Sources/BriefFiniteElementNet/Loads/PartialNonUniformLoad.cs

[epsi1on]

It is good you have included a visualization :) The start and end points are iso points. the linear load can be assumed as a polynomial. (edit: polynomial with degree of 1) Here is pseudo code for your load:

var x1 =2.0 m
var x2=5.0 m
var x3=6.5 m

var xi1 = Xi(x1,6.5);// compute x=2 in iso system
var xi2 = Xi(x2,6.5);
var xi2 = Xi(x3,6.5);

var load = new PartialNonuniformLoad();
load.Severity =  Mathh.SingleVariablePolynomial.FromPoints(xi1, 1.8 ton/meter, xi2, 2.3 ton/meter);
load.StartPoint = new IsoPoint( xi1);
load.StartPoint = new IsoPoint( xi2);

note that this is pseudo code for clarification. not necessarily compiles as C#. you must convert ton/m to N/m etc...

[epsi1on]

did it work?

[epsi1on]

i think you are using local coordinate values, but you should use iso coordinate values. i.e. you should convert X to ξ. have a look at here: https://bfenet.readthedocs.io/en/latest/example/isoparamcoord/index.html#barelement-isoparam-example

[epsi1on]

this is code for your first example with both ends pinned to ground: https://github.com/BriefFiniteElementNet/BriefFiniteElement.Net/blob/master/Validation/Validation/GithubIssues/Issue174.cs

Could you please check and see if it's results are true?

[epsi1on]

good to hear that, Could you please give more information (like screenshot etc of software.) in order to make it as a validation like ones in the validation section? it need a brief visualization (you already did) some code (which i did) and some info about the software which the BFE is validated against which need to be done.

Thanks

[epsi1on]

thanks, i'll add it to documentation asap