  We introduce a class of Parity-Time symmetric elastodynamic metamaterials
(Ed-MetaMater) whose Hermitian counterpart exhibits a frequency spectrum with
unfolding (fractal) symmetries. Our study reveals a scale-free formation of
exceptional points (EP) whose density is dictated by the fractal dimension of
their Hermitian spectra. Demonstrated in a quasi-periodic Aubry-Harper, a
geometric H-tree-fractal, and an aperiodic Fibonacci Ed-MetaMater, the
universal route for EP-formation is established via a coupled mode theory model
with controllable fractal spectrum. This universality will enable the rational
design of novel Ed-MetaMater for hypersensitive sensing and elastic wave
control.
