Different types

•   C - frame plunger solenoid (semi open architecture)
•   D - frame plunger solenoid (closed architecture)
•   Tubular plunger solenoid (closed type)

The Force/stroke characteristics gives the static force according the displacement of the core. The shortest is the flux path, the strongest is force.

Main points

•   The maximum force is very different for each type
•   The plunger force must superior to the load force,
     and the higher is the difference, the faster is the plunger.
•   The length of the stroke is dependant of the plunger type

The timing characteristics is important for the applications that require a low response time. The higher is the current to obtain a large force, the longer it will take more time, but the higher the force and the faster is the movement.

Points principaux

•   R and L values of the coil
•   m × (d²x/d²t) = F_plunger − F_load
•   Three steps

The modules of Quickfield allow to check the behaviour of the appliance under different thermal, electrical or mechanical conditions. the available modules are : DC magnetics, AC magnetics, Transient magnetics, DC Conduction + Electrostatics, AC Conduction + Electrostatics, Transient Electric, Static and Transient Heat Transfer and Linear Stress.

Possible conditions to be tested

•   Thermal use of coil
•   Insulation test
•   Mounting test

Quickfield is pleasant as it's a software that allow you to check simple things very quickkly. Here is an example where you want to ckeck if a linear model can replace a non-linear model (note that as there is no closed magnetical path, the linear choice will always be reasonnable, but the example wants also how to prepare the geometry for use with LabelMover or other modules) Static and Transient Heat Transfer and Linear Stress

Main steps

•   The main objects
•   The bondary conditions
•   Problem parameters
•   LabelMover tips
•   Thermal tips

Datasheet

•   Dimensions
•   Profile
•   Force
•   Energy
•   Temperature ?
•   Response time ?

Main formulae

•   Force at the end of the stroke
•   Electrical power

Designing and some tips

•   Thermal coefficient for coils

General issues

•   Think about a global geometry
•   Linearize as much as possible
•   Transient simulations are longer
•   Use circuit (for accuracy and understanding)