1. A method comprising: receiving, at a machine comprising a processor and a memory, composite material properties for a composite material to be simulated; receiving, at the machine, a composite microstructure for the composite material to be simulated; and obtaining, using the processor and the memory, a set of adjusted material properties for one or more constituents of the composite material, for use in simulating the composite material, by processing the composite material properties and the composite microstructure using fixed constituent property constraints; wherein the fixed constituent property constraints apply across multiple users and multiple locations to provide consistency in predicted material behavior in multiple simulated states, and the multiple users cannot vary the fixed constituent property constraints across multiple simulations.