Using a Spatially Varying Field for FEA Materials and Boundary Conditions

Design Analysis:

nTop Platform features built-in steady-state structural and thermal analysis using a range of boundary conditions.  Through this article, we will describe how to use the "ramp" block and an implicit body to define a field of engineering data that can be used as inputs into a simulation analysis.  If you are not familiar with nTop Platform's Design Analysis capabilities you can learn more here

Constant Field:

Traditionally a user would enter a constant value for a material property in a simulation analysis.  nTop Platform has the capability to define scalar engineering values as Scalar Fields.  In the figure below, you can see that the Thermal Conductivity is set at 152 W/(m*K) and results in a field that does not change.

1-Spatial_Constant.png

Transforming Distance Fields to Engineering Scalar Fields using the Ramp Block:

By using the Ramp Block a user can use an input field to spatially transform field data into engineering units.  This functionality bridges the divide between a field and engineering data and allows complex analysis that is otherwise very difficult to implement in other FEA tools.

Ramp_block_HR.png Spatial_Icon.png

 

Using this functionality you can see that the Thermal Conductivity now varies from 152-200 W/(m*K) at a distance from 0-100 mm from the Axis Location.

2-Spatial_Axis.png

Varying Field using Multiple Objects:

Similarly, you can use multiple implicit bodies with the ramp block to produce more complex field patterns.  In this case, an array of cylinders are used.

3-Spatial_Cylinder.png

And that’s it! You’ve successfully defined varying structural and thermal material properties using fields

Are you still having issues? Contact the support team, and we’ll be happy to help!

Boundary Conditions:

Just like material properties, nTop Platform allows certain FEA boundary conditions to vary using scalar field inputs.  Examples of these types are shown below.

Structural Boundary Conditions
with Field Inputs 

Thermal Boundary Conditions 
with Field Inputs

structural_loads.png thermal_lodas.png


In this instance, convection coefficients can easily be varied using the Ramp block, in the same manner, shown for spatially varying material properties.  

4-Spatial_Convection.png

Download the Example file:

Keywords:

 FE analysis simulation FEA vary Fields Elastic Modulus Conductivity Material Properties Implicit Bodies Ramp spatially Field 
Was this article helpful?

Comments

0 comments

Please sign in to leave a comment.