feat: add structural dynamics analysis - #6
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savbcar
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Aug 15, 2026
savbcar
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- adds CalculiX free-vibration modal analysis
- extracts modes 1–10 from CalculiX DAT output
- stores eigenmode displacement fields in FRD output
- validates mode-1 frequency against Euler–Bernoulli theory
- generates modal frequency tables and visualization
- evaluates thickness sensitivity
- evaluates Young's-modulus sensitivity
- evaluates density sensitivity
- evaluates section-height sensitivity
- adds modal unit and integration testing
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