Units for FEA

How to Select Units for Finite Element Simulations

When setting up a Finite Element (FE) simulation it is important to select a set of units that is consistent and suitable for the problem. The two most common unit systems are:

  • SI units [meter (m), Newton (N), seconds (s), and Kelvin (K)]
  • SI units small parts [millimeter (mm), Newton (N), seconds (s), and Kelvin (K)]

The following pdf-file contains a detailed description of how the units are connects in a few different unit systems.


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