Wave Propagation Analysis
Wave Propagation Analysis
(OP)
Lately I have been reading up on wave propagation analysis.....and (after reading a few books) I have a few questions. (I would run some test models myself but I do not have wave propagation software.)
1. It would seem to me that at the right forcing frequency, this method (i.e. wave propagation analysis) would predict higher displacements, stress, etc than a normal modal analysis (with stiffness not modified by the wave number). Ergo this method becomes appropriate only at (and above) certain cut-off frequencies. Am I understanding that correctly?
2. In mode conversion (i.e. converting axial waves to flexural waves at changes in geometry, etc)......is there a lot of energy loss in this process? Or is it minimal (depending on the level of damping)?
Preferably, I would like answers only from people experienced with this technique (and direct answers to my questions). Thanks in advance.
1. It would seem to me that at the right forcing frequency, this method (i.e. wave propagation analysis) would predict higher displacements, stress, etc than a normal modal analysis (with stiffness not modified by the wave number). Ergo this method becomes appropriate only at (and above) certain cut-off frequencies. Am I understanding that correctly?
2. In mode conversion (i.e. converting axial waves to flexural waves at changes in geometry, etc)......is there a lot of energy loss in this process? Or is it minimal (depending on the level of damping)?
Preferably, I would like answers only from people experienced with this technique (and direct answers to my questions). Thanks in advance.





