A mathematical model of an object or a physical process is always a crucial component of the model development process. Given a set of requirements and objectives, the model is usually required to copy the object/process behavior with a realistic accuracy and reasonable computational effort. It is then important that all the necessary features and characteristics of the examined object/process are incorporated in the modeling process. With the multi-physics objects such as magnetorheological (MR) actuators, the process becomes even more complicated as they require coupling the expertise from various and sometimes distant fields of engineering and science. The multi-physics nature of MR actuators (also known as MR dampers) calls for the expertise in solid body mechanics, fluid mechanics, heat transfer, electromagnetics, power electronics, chemistry, control theory, etc. It requires the use of appropriate tools and methodologies for specific tasks. Therefore, a need to outline various methodologies and models applied in R&D studies on MR dampers/actuators has arisen. Briefly, in the chapter the author discusses how the models and methods can be used in solving engineering and research problems.

Chapter Contents:

• 4.1 Introduction
• 4.2 Modeling
• 4.2.1 Electromagnetic domain
• 4.2.1.1 Steady-state lumped parameter modeling
• 4.2.1.2 Magnetostatic field modeling
• 4.2.1.3 Transient lumped parameter modeling
• 4.2.1.4 Transient magnetic field modeling
• 4.2.2 Flow domain
• 4.2.2.1 Steady-state flow modeling: lumped parameter approach
• 4.2.2.2 Steady-state CFDs
• 4.2.2.3 Unsteady fluid dynamics
• 4.3 Summary
• References

Inspec keywords: magnetorheology; magnetic actuators

Other keywords: multiphysics nature; magnetorheological actuators; multiphysics objects; model development process; R&D studies; object-process behavior; MR dampers; mathematical model; MR actuators

Subjects: Other final control equipment