The Support Yield Strength Ratio (SYSR) is a factor that is used in the simulation assumptions to assign a strength to the support material as compared to the solid material. It is used as a knockdown factor to modify the strength of the support material. It affects both yield strength and elastic modulus of the support material. For example, a value of 1.0 results in a support strength equal to the solid material while 0.5 is half the strength of the solid material. The default SYSR value is 0.4375. This default was determined by studies where the support strength for default supports built on an EOS M270 machine were tested and compared to solid material built on the same machine.