A Modified Eyring Equation for Modeling Yield and Flow Stresses of Metals at Strain Rates Ranging from 10⁻⁵ to 5 × 10⁴ s⁻¹

Table 1

Material constants for copper.

	(MPa)	(MPa)	()	()	()	()
Copper 105 μm	103	96.4	2.31	2.35	15000	2037
Copper 26 μm	172	179.8	1.39	0.737	15000	5919
Copper 9 μm	278	271.6	0.754	0.612	15000	7163