![]() ![]() The above format can be followed to create indvidual text files that contain one time function, and can be read into CAEPIPE. The time function above is illustrative and not a guideline. Time history analysis begins at time t=0.0.Īn Illustrative time function (format: time value) Example: 0.0 0.0 (you must have a zero entry for the Value, otherwise CAEPIPE will interpolate linearly for a smaller time, say t=0.1, if this time is smaller than that available in the table (say you had started from 0.2 12000). ![]() You can make that table as fine as you want it to be. ![]() In CAEPIPE, the time function you define can have any interval between two time values. The actual force (or moment) at any time is found by linear interpolation between time points and multiplying by the input scale factor. which describe the variation of the forcing function with respect to time. Time functions are non-dimensional (i.e., a series of time versus value tables). These separate force-time histories are then applied separately as Time Varying Loads in CAEPIPE at the corresponding nodes in the piping model. Typically, a transient fluid flow analysis program computes forces as a function of time at all changes in directions (bends/tees) resulting from a transient event (such as a fluid hammer). What are time functions and how do I use them?Ī-1.
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