Electromagnetic Plunger with Stopper
Application ID: 36631
This is a transient model of an electromagnetic plunger with stopper restricting the linear motion. The model consists of a magnetic core, nonmagnetic guider, multi-turn coil, nonmagnetic stopper/blocker, and magnetic plunger attached to the spring and damper at the base.
The electromagnetic force on the plunger due to the transient current in the coil is calculated using the Maxwell stress tensor method in the Magnetic Fields physics. The electromagnetic force is then coupled to the Solid Mechanics physics using the Magnetomechanics Multiphysics coupling. The Solid Mechanics physics defines the spring and damping foundation of the plunger as well as the physical contact between the plunger and stopper. Due to the translational motion of the plunger, the Magnetic Fields physics is solved together with the Moving Mesh physics to correctly compute the fields.
Previous versions of this model are explained in much greater detail in the following blog post: Part 2: Model a Linear Electromagnetic Plunger with a Blocker.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® et
- Module AC/DC et
- soit le Module Acoustics, Module MEMS, ou Module Structural Mechanics et
- soit le Module MEMS, Module Multibody Dynamics, ou Module Structural Mechanics
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Grille des Spécifications and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.