Not really
I'm not convinced that we need artificial gravity to get people to Mars. The Russians have had people in zero G for longer than a one way trip to Mars. One poor devil was in Mir for about 200 days. A one way trip to Mars shouldn't be over 120 days due to radiation considerations.
Artificial gravity can be created by having two pressure vessels connected by a kevlar tether and spinning about their common center-of-mass (think of a dumb bell spinning about its center with the connecting rod being the kevlar tether). The pressure vessels could be inflatable structures. I should emphasize that I don't like this design solution for reasons that I won't go into. I merely point out that artificial gravity is not a show stopper.
Gary