Products: Abaqus/Explicit Abaqus/Aqua
User subroutine VWAVE is used to specify wave kinematics for an Abaqus/Aqua analysis through Abaqus/Explicit.
Verification problem pb_vwave-airy-period_p31_xpl.inp is identical to pb_airy_p31_xpl.inp as described in “Dynamic pressure, closed-end buoyancy loads” in “Aqua load cases,” Section 3.11.1. It tests the dynamic pressure implementation and closed-end buoyancy loading for Airy waves coded in user subroutine VWAVE. In this problem a vertical pile is fully constrained and subjected to buoyancy loading. Airy wave theory is used to calculate the total reaction force on the structure during a dynamic analysis. Distributed load type PB is used with a 50-element (PIPE31) model, and concentrated load type TSB is used with a one-element (B31) model.
Model:
| Height of the structure | 175.0 (100.0 below and 75.0 above mean water elevation) |
| Pipe section data | r = 1.0, t = 0.25 |
Material:
Aqua—environment:
The results are identical to those calculated in pb_airy_p31_xpl.inp and agree well with the analytically determined peak total reaction force.
Input file for this analysis.
Same analysis, but the corresponding wave length is specified instead of the wave period.
User subroutine VWAVE used for pb_vwave-airy-period_p31_xpl.inp and pb_vwave-airy-length_p31_xpl.inp.
The wave length calculation from the wave period might be expensive. This optimized input file calculates the wave length once initially and stores the wave parameters appropriately for subsequent usage.
User subroutine VWAVE used for pb_vwave-airy-period-opt_p31_xpl.inp.
Verification problem pb_vwave-airy-period_p21_xpl.inp is identical to pb_airy_p21_xpl.inp as described in “Dynamic pressure, closed-end buoyancy loads” in “Aqua load cases,” Section 3.11.1. It tests the dynamic pressure implementation and closed-end buoyancy loading for Airy waves coded in user subroutine VWAVE. In this problem a vertical pile is fully constrained and subjected to buoyancy loading. Airy wave theory is used to calculate the total reaction force on the structure during a dynamic analysis. Distributed load type PB is used with a 50-element (PIPE21) model, and concentrated load type TSB is used with a one-element (B21) model.
Model:
| Height of the structure | 175.0 (100.0 below and 75.0 above mean water elevation) |
| Pipe section data | r = 1.0, t = 0.25 |
Material:
Aqua—environment:
The results are identical to those calculated in pb_airy_p21_xpl.inp and agree well with the analytically determined peak total reaction force.
Input file for this analysis.
Same analysis, but the corresponding wave length is specified instead of the wave period.
User subroutine VWAVE used for pb_vwave-airy-period_p21_xpl.inp and pb_vwave-airy-length_p21_xpl.inp.
The wave length calculation from the wave period might be expensive. This optimized input file calculates the wave length once initially and stores the wave parameters appropriately for subsequent usage.
User subroutine VWAVE used for pb_vwave-airy-period-opt_p21_xpl.inp.