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*Ramp |
 
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*Ramp
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*Ramp |
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To specify a linear or non-linear variation in the ramp value applied to loads and displacements.
Refer to Load Ramping for further information on this feature.
A single line which defines ramp type:
TYPE=LINEAR/NONLINEAR
Input: |
Description |
Ramp Type: |
This entry allows you to select the type of ramp to be used. The options are Linear and Nonlinear (the default). This entry is ignored in a static analysis. |
(a)The Ramp Time and Ramp Type entries allow control over the build-up of dynamic loads and displacements in an analysis with waves and/or vessel motions. For example, wave loads in a regular wave analysis are typically ramped on over 1 wave period, and the solution then proceeds for a further number of wave periods to achieve a steady state solution. When a Nonlinear ramp is specified (and this is the default), a half cosine ramp function is used (as opposed to a linear function).