Undamped 1D OscillatorBen Heinrich2023-01-11mechaniceigenValueyes
This input file defines a single degree of freedom oscillator composed of a square mass (1mx1m) with density 1 kg/m3 in 2d (plane strain).
We constrain in x direction and connect a concentrated stiffness in the y direction.
The resulting system has a mass m=1; we set k=1, so the natural frequency is w_0=2*pi Hz.
This corresponds to an eigenvalue of lambda=1 1/s2.
The generalized EVP is solved with the external eigensolver (calling a Python script).
The eigenvalues and eigenvectors are imported from a matrix market file in coordinate format.
0.9501stiffnessmassyespython3 EigenSolver.py1e-9