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Hi all-

I'm trying to create a time-dependent model of a system using the Structural Mechanics module that is apparently complicated enough to crash the program if I request more than 20 or 30 time points within my selected time range. I'm interested in oscillations, however, that require a higher resolution to see. I've already simplified the model geometry as much as I can without losing the critical components.

As a consequence, I was wondering if it were possible to solve, say, the first 10 ms of my problem, then use the solution of the last time point solved to initialize the next sequence of 10 ms.

I've tried storing the solutions of the first 10 ms in the Solver Manager and using the solution of the last time point to initialize the next 10 ms. Sadly, when I do so the second chunk of 10 ms starts off headed in completely the wrong direction. It's as if the initial velocity wasn't included in the initialization.

If anyone has a suggestion as to how I can properly initialize time sequences that do not start at t=0, I'd love to hear it. If you know an alternate way to improve my resolution without crashing the program, that would be great, too.

Thanks,
Susannah

Quick facts about the model:
Module: Statistical Mechanics, 3D-Solid, Stress-Strain
Analysis: Transient/time-dependent, SPOOLES, generalized-alpha
Applied motion: a tailored acceleration to one end of a 15 cm lever (more or less) to get up to a speed of 15 um/s. The other end is fixed. I'm interested in the oscillations in the middle of the beam.
Expected oscillation amplitude: < 100 pm (or at least, that's what I'm hoping for)
Expected oscillation frequency: ~1 kHz
Time range over which I'd like to observe the oscillations: t = 0 to 2s