On 7/17/25 00:36, yuchen liu wrote:
I checked my global mass matrix and confirmed that it is indeed singular.
Then, I found out that my local mass matrices are also singular, which
explains the issue. After printing out the local matrices, I realised I had
made a dumb mistake in the assembly process.
We all make dumb mistakes all the time. That's how we learn. I'm glad I could
help you point in the right direction and that you figured it out!
Best
W.
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Wolfgang Bangerth email: [email protected]
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