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Spring Constraint

In one sentence: Attach a linear elastic spring (F = k × d) to a face, edge, or vertex to model compliant supports such as rubber mounts or soil.

Overview

Workbench: FEM
Menu: FEM → Model → Mechanical Boundary Conditions → Spring Constraint

Adds a linear spring to a face, edge, or vertex. The spring exerts a restoring force proportional to displacement: F = k × d.

Parameters

Parameter Description
Normal stiffness Spring stiffness in the face-normal direction (N/mm)
Tangential stiffness Spring stiffness parallel to the face (N/mm)
Reference edge Optional: sets the spring direction

Use cases

  • Simulating a flexible foundation (soil, rubber mount, compliant support).
  • Modelling a structure supported by springs rather than rigidly fixed.
  • Representing the stiffness of adjacent structure without meshing it (foundation stiffness method).

See also