Domain, Boundary, Edge, Point, and Pair Nodes for Solid Mechanics
The Solid Mechanics Interface has these domain, boundary, edge, point, and pair nodes and subnodes (listed in alphabetical order), which are available from the Physics ribbon toolbar (Windows users), Physics context menu (Mac or Linux users), or right-click to access the context menu (all users).
In general, to add a node, go to the Physics toolbar, no matter what operating system you are using. Subnodes are available by clicking the parent node and selecting it from the Attributes menu.
Features Available from Submenus
Many features for the Solid Mechanics interface are added from submenus in the Physics toolbar groups or context menu (when you right-click the node). The submenu name is the same in both cases.
The submenus at the Domain level are Material Models, Volume Forces, Mass, Spring, and Damper, and Domain Constraints.
The submenus at the Boundary level are Connections, Pairs, Mass, Spring, and Damper, and More Constraints.
There are also the Edges and Points submenus.
Note: Some submenus are only present with certain COMSOL products.
Force Loads
Note that you can add force loads acting on all levels of the geometry for the physics interface. Add a:
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Body Load to domains (to model gravity effects, for example).
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Boundary Load to boundaries (a pressure acting on a boundary, for example).
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Edge Load to edges in 3D (a force distributed along an edge, for example).
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Point Load to points (concentrated forces at points).
If there are subsequent constraints specified on the same geometrical entity, the last one takes precedence.
For 2D axisymmetric components, COMSOL Multiphysics takes the axial symmetry boundaries (at r = 0) into account and automatically adds an Axial Symmetry node to the component that is valid on the axial symmetry boundaries only.
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Added Mass
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Antisymmetry
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Attachment
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Beam Connection
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Body Load
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Bolt Pretension
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Bolt Selection
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Bolt Thread Contact
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Boundary Load
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Boundary Pair
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Cell Periodicity
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Change Thickness
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Contact
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Crack
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Edge Load
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Elastic Predeformation
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Elastoplastic Soil Material
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External Strain
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External Stress
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External Stress-Strain Relation
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Fixed Constraint
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Free
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Gravity
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Hyperelastic Material
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Initial Values
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Linear Elastic Material
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Low-Reflecting Boundary
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Magnetostrictive Material
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Nonlinear Elastic Material
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Periodic Condition
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Piezoelectric Material
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Point Load
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Point Load (on Axis)
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Port
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Prescribed Acceleration
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Prescribed Displacement
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Prescribed Displacement/Rotation
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Prescribed Velocity
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Rigid Motion Suppression
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Rigid Connector
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Rigid Domain
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Ring Load
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Roller
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Rotating Frame
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Shape Memory Alloy
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Shell Connection
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Spring Foundation
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Spring-Damper
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Stress Linearization
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Symmetry
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Thin Elastic Layer
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Thin-Film Damping
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Thread Boundary Selection
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Wave Speeds
In the COMSOL Multiphysics Reference Manual, see Table 2-4 for links to common sections and Table 2-5 for common feature nodes. You can also search for information: press F1 to open the Help window or Ctrl+F1 to open the Documentation window.
These subnodes are available from main parent nodes as indicated in the documentation:
 
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Activation
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Adhesion
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Applied Force (Rigid Connector)
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Applied Force (Rigid Domain)
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Applied Moment (Rigid Connector)
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Applied Moment (Rigid Domain)
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Center of Mass Nodes (Boundary, Edge, Point)
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Center of Rotation Nodes (Boundary, Edge, Point)
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Conduction Loss (Time-Harmonic)
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Concrete
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Creep
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Damage
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Damping
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Decohesion
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Destination Point (for Spring-Damper)
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Dielectric Loss
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Elastic Predeformation
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External Stress
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Face Load
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Fixed Constraint (Rigid Domain)
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Friction
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Hygroscopic Swelling
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Initial Stress and Strain
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Initial Values (Rigid Domain)
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J-Integral
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Location Nodes (Boundary, Edge, Point)
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Mass and Moment of Inertia (Rigid Connector)
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Mass and Moment of Inertia (Rigid Domain)
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Mechanical Damping
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Phase
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Plasticity
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Porous Plasticity
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Prescribed Displacement/Rotation
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Predeformation
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Rocks
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Safety
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Set Variables
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Slip Velocity
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Soil Plasticity
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Source Point (for Spring-Damper)
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Spring Foundation (Rigid Connector)
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Spring Foundation (Rigid Domain)
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Thermal Expansion (for Constraints)
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Thermal Expansion (for Materials)
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Thermal Expansion (Attachment)
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Thermal Expansion (Rigid Connector)
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Viscoelasticity
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Viscoplasticity
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Wear