There are many issues related with your simulation case. Couple of them are listed below:
1) There is no Load and Fixture defined in this simulation
2) Surface bodies have to be excluded from the analysis (If you willing to solve your model as solid body, otherwise solid bodies has to be excluded from analysis if you are willing to use shell elements)
3) The global boded contact would not be sufficient in this case and it is recommended to use contact sets defined individually.