Search Results

Arriving at an accelerated durability test cycle either for a laboratory simulation or for an FE-based fatigue simulation is not an easy task. The loading spectra over the entire life span or desired validation cycle needs to be synthesized and the resulting signal is to be used for driving a rig or for Computer Aided Engineering (CAE) simulation, as the case may be. Any structural durability evaluation essentially involves multiple measurements involving strain, acceleration, displacement, force-all of which directly or indirectly are a measure of fatigue damage on the structure. Multi channel dynamic events (time domain based) comprising strain signals can be accelerated by damage-editing, but what if the input time histories are not strains but are displacements, accelerations and forces? A directly “non damaging” parameter like displacement or acceleration or force signal makes an accelerated test synthesis not very easy.