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Finite-element model, in which a meshing procedure creates a network of line elements connected by nodes within a material continuum. Each line element simulates the geometric and physical properties of the local material. Given the loading and boundary conditions of the whole system, numerical formulation of structural response may advance through the computational model. The discretization of a finite-element model will have some degree of refinement, producing either a coarse or fine mesh. A node-element model is technically a finite-element model in which a single line element represents the structural element. Node-element modeling, however, follows the direct stiffness method, whereas finite-element modeling follows the finite-element method (FEM). The SAPFire ® Analysis Engine implements an efficient finite-element approach when performing structural analysis.
Division of frame elements
While the discretization of an object-based model is always critical (in that discretization facilitates analysis), there are conditions in which it is also important to divide frame elements into multiple segments such that accurate results are generated.
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Discretization tips
- For shell elements, discretization may be refined through auto meshing (Assign > Area > Automatic Area Mesh) or area dividing (Edit > Areas > Divide Areas).
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