Elements tested
- AC1D2
- AC1D3
- AC2D3
- AC2D4
- AC2D6
- AC2D8
- AC3D4
- AC3D5
- AC3D6
- AC3D8
- AC3D10
- AC3D15
- AC3D20
- ACAX3
- ACAX4
- ACAX6
- ACAX8
- ACINAX2
- ACINAX3
- ACIN2D2
- ACIN2D3
- ACIN3D3
- ACIN3D4
- ACIN3D6
- ACIN3D6
ProductsAbaqus/Standard Elements tested
Features testedContinuum acoustic elements are removed during a steady-state acoustic analysis. Problem descriptionModel:The models have dimensions 10.0 × 1.0 in the x–y plane, with an out-of-plane dimension of 1.0. Material:
Loading and boundary conditionsThe pressure at the left side of the model is constrained to equal one; there is a plane-wave radiation condition on the right side of the model. A steady-state solution at unit frequency is obtained. Then, one-half of the model is removed. When the elements are removed, the radiation condition is applied along the new external boundary. Reference solutionThe one-dimensional Helmholtz equation for steady-state acoustics is where is the acoustic wave number. Using the boundary conditions that at and that at , the solution for the continuum model is while the phase is consistent with a sine wave at the specified frequency, 1 Hertz. Results and discussionThe model gives the theoretical results in both the first and second steps. Input files
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