From the online manual, I learned how to evaluate the time step to ensure model stability. However, I observed that the CFL number in the log file is consistently about half of what I estimated using the methods described in the manual. Upon reviewing the source code, I discovered that the initialization of the k value differs from the procedure outlined in the manual.
source code:
NatFreqCFL::stiffness(EA * N / UnstrLen);
manual:
$k=4 EA \frac{N}{L}$
From the online manual, I learned how to evaluate the time step to ensure model stability. However, I observed that the CFL number in the log file is consistently about half of what I estimated using the methods described in the manual. Upon reviewing the source code, I discovered that the initialization of the k value differs from the procedure outlined in the manual.
source code:
NatFreqCFL::stiffness(EA * N / UnstrLen);manual:
$k=4 EA \frac{N}{L}$