Description: Co-simulation requires the interaction of simulation programs from different physical, numerical, and computing domains. The SIMULIA Co-Simulation Engine configuration file defines the simulation programs participating in a multiphysics co-simulation and the fields exchanged between the simulation programs, as well as the data exchange patterns and frequency. The co-simulation configuration file is required when using the SIMULIA Co-Simulation Engine for coupling Abaqus to Abaqus or to a third-party solver. When you use Abaqus/CAE to execute the co-simulation between Abaqus solvers, the configuration file is created for you automatically.