MSC Software MSC, EASY5 Overview MSCEASY5 Levels of Dynamic System Simulation Fidelity Physical systems can be simulated at many levels of accuracy. the correct level depends on the purpose of the simulation 1. Atomic level -Uses equations from quantum mechanics Purpose: Molecular level effects Applications: nuclear physics 2. Microscopic ( or distributed parameter )-Uses partial differential equations Purpose: Study quantities that vary significantly over the points in a geometric object Applications: Detailed aerodynamics, impact analysis, component analysis 3. Macroscopic (or lumped parameter)-Uses ordinary differential equations Purpose: Study quantities that vary in time but can be averaged over spacial components Applications: Flight controls, hydraulic system analysis, electric power system control 4. Systems analysis Uses algebraic equations with time delays Purpose: Study quantities that effectively change value instantaneously at discrete instances of time Applications: Scheduling, communications Each level requires"orders of magnitude more effort than the next highest but provides more accurate results MSC EASY5 models dynamic systems at Level 3. EAS103 Fluid Power Systems Advanced Class-Chart 8MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 8 MSC.EASY5 MSC.EASY5 Overview TM Levels of Dynamic System Simulation Fidelity Physical systems can be simulated at many levels of accuracy. The correct level depends on the purpose of the simulation. 1. Atomic level - Uses equations from quantum mechanics Purpose: Molecular level effects. Applications: nuclear physics. 2. Microscopic (or distributed parameter) - Uses partial differential equations Purpose: Study quantities that vary significantly over the points in a geometric object. Applications: Detailed aerodynamics, impact analysis, component analysis. 3. Macroscopic (or lumped parameter) - Uses ordinary differential equations Purpose: Study quantities that vary in time but can be averaged over spacial components. Applications: Flight controls, hydraulic system analysis, electric power system control 4. Systems analysis - Uses algebraic equations with time delays Purpose: Study quantities that effectively change value instantaneously at discrete instances of time. Applications: Scheduling, communications. Each level requires “orders of magnitude more effort than the next highest but provides more accurate results. MSC.EASY5 models dynamic systems at Level 3