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FR4 material

Solution Partner Pioneer Solution Partner Pioneer
Solution Partner Pioneer
Do we have FR4 material in femap library ?
Or how to create this material??

Re: FR4 material

Siemens Phenom Siemens Phenom
Siemens Phenom

FR-4 is not included in our material library.  The base for our library is largelly MIL Handbook 5.  I did find this paper, where an analysis is done with FR-4 as the PCB layer, it has a Modulus, Poisson's Ratio, and thermal expansion number, I don't know if they are correct, but it's a starting point.


There's a NASA report with some FR-4 properties here -


Please be cautious using any data like this, one difficulty in FEA is finding the correct material properties to use.