I am trying to do the modal analysis of tire using ABAQUS, I am unable to find any tutorial for this. Could anyone please give some Suggestions. I have modeled the 2D axisymmetric tire.
I do not know Abaqus software, but, once you have defined the model and boundary conditions, you might start searching for eigenmode analysis, may be with Lanczos algorithm. If you are in free-free conditions, the first 3 modes (2D) will be rigid body modes, with a frequency very close to zero.
I recall considerable work being done to model tyres some twenty years ago when there was a great deal of interest in the overall dynamic behaviour of vehicles (NVH).
It seems unlikely that you are going to get any useful results from a modal analysis of an axisymmetric tyre model.
However, as Alessandro suggested you need to define some mass properties (density of the material) and select a linear perturbation frequency analysis in the STEP dialogue of ABAQUS.
I am not working with ABAQUS anymore, but I remember that there used to be a quite extensive tutorial on tyre modeling in the ABAQUS documentation. Agree on the axisymmetric modeling as a problem, though. And I hope you have good input data, that's the deal breaker with dynamic tyre modeling. Correct inflated shape and correct boundary conditions are quite importance for the lower modes.