A new Magnetostriction interface has been introduced. When added, a Solid Mechanics interface, a Magnetic Fields interface, and a
Magnetostriction multiphysics coupling are created.
In the Solid Mechanics interface, a new material model, Magnetostrictive Material, has been added. This material has three different formulations:
Linear,
Nonlinear Isotropic, and
Nonlinear cubic crystal.
In the Magnetic Fields interface, the new Ampere’s law, Magnetostrictive feature is used when modeling a magnetostrictive material.
In the Solid Mechanics interface, elements with so-called serendipity shape functions have been added. The serendipity elements have fewer degrees of freedom than the standard Lagrange elements. The default element type in these interfaces has been changed to
Quadratic serendipity. The element type in existing models is not changed when the model is opened, so if you want to employ the serendipity elements, you must change the element type in the
Discretization section of the physics interface settings.
The Contact node has a new
Adhesion subnode. When using adhesion, the contacting boundaries will stick together when a certain criterion has been fulfilled. This criterion can be either a contact pressure, gap distance, or arbitrary user-defined expression. Using adhesion requires a penalty contact formulation.
Two boundaries that are joined by adhesion can separate again if a decohesion law is specified. There are three different decohesion laws: Linear,
Polynomial, and
Multilinear. The decohesion laws allow mixed mode decohesion with independent properties for the normal and tangential directions.
Total forces are now computed for each Contact node as well as summed over all
Contact nodes.
Constraints like Fixed Constraint and
Prescribed Displacement can now be augmented with a
Thermal Expansion subnode. This makes it possible to relieve the stresses induced by constraints when the surrounding structure, idealized by the constraints, is not held at a fixed temperature.
Similarly, a Thermal Expansion subnode has been added to the
Rigid Domain and the
Rigid Connector. This allows for a thermal expansion of these otherwise rigid objects.
The Prescribed Velocity and
Prescribed Acceleration features have been augmented with a
Harmonic Perturbation subnode. These boundary conditions can thus be used as a fixed constraint in a stationary study step, and then provide a harmonic vibration in a subsequent prestressed frequency domain study. This new functionality is available in the Solid Mechanics interface.