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evaluateStrain

Evaluate strain for dynamic structural analysis problem

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Syntax

nodalStrain = evaluateStrain(structuralresults)

Description

example

nodalStrain= evaluateStrain(structuralresults)evaluates strain at nodal locations for all time- or frequency-steps.

Examples

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Open Live Script

Evaluate the strain in a beam under a harmonic excitation.

Create a transient dynamic model for a 3-D problem.

structuralmodel = createpde('structural','transient-solid');

Create the geometry and include it in the model. Plot the geometry.

gm = multicuboid(0.06,0.005,0.01); structuralmodel.Geometry = gm; pdegplot(structuralmodel,'FaceLabels','on','FaceAlpha',0.5) view(50,20)

Figure contains an axes object. The axes object contains 3 objects of type quiver, patch, line.

Specify Young's modulus, Poisson's ratio, and the mass density of the material.

structuralProperties(structuralmodel,'YoungsModulus',210E9,...'PoissonsRatio',0.3,...'MassDensity',7800);

Fix one end of the beam.

structuralBC(structuralmodel,'Face',5,'Constraint','fixed');

Apply a sinusoidal displacement along they-direction on the end opposite the fixed end of the beam.

structuralBC(structuralmodel,'Face',3,...'YDisplacement',1E-4,...'Frequency',50);

Generate a mesh.

generateMesh(structuralmodel,'Hmax',0.01);

Specify the zero initial displacement and velocity.

structuralIC(structuralmodel,'Displacement',[0,0,0],'Velocity',[0,0,0]);

Solve the model.

tlist = 0:0.002:0.2; structuralresults = solve(structuralmodel,tlist);

Evaluate the strain in the beam.

strain = evaluateStrain(structuralresults);

Plot the normal strain alongx-direction for the last time-step.

figure pdeplot3D(structuralmodel,'ColorMapData',strain.exx(:,end)) title('x-Direction Normal Strain in the Beam of the Last Time-Step')

Input Arguments

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Solution of a dynamic structural analysis problem, specified as aTransientStructuralResultsorFrequencyStructuralResultsobject. Createstructuralresultsby using thesolvefunction.

Example:structuralresults = solve(structuralmodel,tlist)

Output Arguments

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Strain at the nodes, returned as anFEStructobject with the properties representing the components of strain tensor at nodal locations. Properties of anFEStructobject are read-only.

Version History

Introduced in R2018a

See Also

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