In this demonstration we are going to run a nonlinear solution
First we import the model (an NX part)..
..which consists of two components
We will next create a midsurface of the pipe body
We setup two materials - steel for the tool and aluminium for the pipe
The steel properties are read from the default Femap library
Properties for the aluminium are entered manually
A simple nonlinear elasto-plastic (bi-linear) curve is defined for the aluminium
Now the element properties are setup
Solid elements for the tool and plate elements for the pipe
Material and plate thickness is assigned to the plate property
The pipe is meshed using the meshing toolbox..
..and the mesh adjusted for greater resolution on the corner radii
A mesh size is assigned to the solid tool..
..and automatically hex meshed
The mesh is improved using the meshing toolbox
The contact will next be set up
First the property is created
Now the two regions are selected
Finally the connector links the regions and the property together
The plate thickness will be displayed..
..to check the contact region is assigned to the correct side of the plates (it is)
The load will be applied through a rigid element..
..linking a single independent node to the solid mesh
The independent node is moved (not necessary, but helpful in the setup)
Next a constraint set is created
The lower face is constrained in Z-translation
Additional points are constrained to remove rigid body motion of the pipe
The rigid element independent node is fully constrained
Now a load set is created..
..and an enforced displacement of 40mm applied to the independent node
The 'loading' set is copied and edited for the 'unloading' set
With the modelling complete, the analysis will be set up
Material nonlinearities and large displacements are on by default
Mostly default setting will be used for this analysis
Boundary conditions will be assigned in the subcases
A subcase for the loading is added
The solution end time, increments and boundary conditions are set
A subcase for the unloading is added and setup
The loading subcase is edited to add the contact set (previously missed)
The model is saved
The analysis is started and progress monitored
We jump to when the solution has complete. Now the results can be processed
This is the deformed shape at t=1
Displacements (mm) at t=1
Von Mises plate stresses (MPa) at t=1
Hovering over the elements, the values are listed in the entity info pane
Contact pressure (MPa) at t=1
We'll change the transparency of the tool for clarity
Animating the von Mises stresses through the solution
We will now create some graphs
A vector vs. set plot is created..
..to plot the displacement (mm) of two nodes through the entire solution
Now the constraint force will be plotted
This shows the force (N) at the node where the enforced motion was applied
A new chart is now made to plot the stresses..
..and several elements picked
The material plastic deformation can clearly be seen
Finally some criteria plots will be shown
The time step t=1 is selected as this shows the peak stresses
This shows the elements with stresses >200MPa
And those <200MPa
Now the elements with stresses >200MPa are coloured grey
This concludes the demonstration