At different stages of product design, various levels of modeling are used. In order to make design decisions, as a rule, simulation techniques at the microlevel (FEM, CFD) are used. In order to make conceptual decisions simulation at the macrolevel or system simulation or 0D/1D simulation are used.
System simulation allows to see the behavior of objects on the system level. It can be combined into a system of subsystems of different physical nature. It allows to simulate complex technical products, which consist of many different subsystems both in structure and in physics:
- The mechanics (1D / 2D / 3D)
- Electronics
- Hydraulic
- Pneumatics
- Acoustic
- Thermodynamics and heat transfer
- Electromagnetism
- Chemistry
- Biology
- Control theory or any others that may be described by the system of ordinary differential equations.
Any vehicle is a complex system, in which there are interaction of multidisciplinary subsystems: body, chassis, engine, powertrain, tires, electricity, brake system, steering system. Moreover, with the introduction in recent years of electronic systems such as ABS, ESP and so, interaction between subsystems and their influence on the vehicle as a whole much more complicated. Therefore, fast and qualitative research collaboration of these subsystems can only be made by mathematical simulation.
- Longitudinal dynamics
- Transverse dynamics
- Vertical dynamics
- Vibration of engine
- Thermal balance
- Intake and exhaust systems noise
- Drivetrain simulation (clutch, gearbox, main gear)
- Engine simulation (intake system, combustion, exhaust system, camshaft and crankshaft mechanisms)
- Power balance
- Engine and its subsystem
- Drivetrain
- Suspension
- Brake system
- Steering system
- HVAC (Heating, Ventilation and Air Condition) systems
- Electrical network
