Simon is expected to compete for playing time at strongside outside linebacker behind Elvis Dumervil and Courtney Upshaw and also for a role as a situational pass rusher and on special teams.
The Big Ten Conference Defensive Player of the Year last season, the 6-foot-1, 257-pounder lined up everywhere from defensive end, defensive tackle and linebacker for the Buckeyes.
Because of his gritty style of play, Simon has drawn comparisons to former Ravens outside linebacker Jarret Johnson.
"Yes, toughness and style, work ethic, attention to detail, guys that love ball," Ravens coach John Harbaugh said after the draft of Simon and Johnson, who now plays for the San Diego Chargers. "He's our kind of guy. Jarret Johnson was a Raven, and he always will be. So it's probably a good comparison."