This minisymposium convenes researchers and practitioners advancing supplemental energy-dissipation technologies that transform structural dynamics into controllable, low-damage response. We welcome contributions that tie first-principles mechanics to deployable engineering across building and bridge systems, in both new design and retrofit. Device families of interest include metallic yielding fuses (ADAS/TADAS, slit and plate dampers, replaceable links), frictional interfaces, viscous fluid dampers, viscoelastic and fractional-order media, tuned mass/liquid/inerter devices and hybrid variants, negative-stiffness and self-centering solutions, semi-active magneto-rheological dampers, fully active control devices, and rocking or base-isolated systems with supplemental damping. Topics span constitutive characterization (rate/temperature dependence, low-cycle fatigue, degradation and aging), device–structure interaction, connection and anchorage mechanics, and system integration with RC, steel, timber, and precast assemblages. Methodologies may include shake-table and quasi-static cyclic testing at component and subassembly scales; hybrid simulation and real-time cyber-physical testing; full-field measurement (DIC), system identification, and model updating; high-fidelity finite-element and fluid–structure models; validated macro-elements and surrogate/reduced-order models; multi-objective optimization (performance, cost, embodied carbon); and rigorous uncertainty quantification. Application-oriented studies are encouraged on performance-based and resilience-oriented design, probabilistic demand and fragility modeling calibrated to experiments and field observations, code development and calibration, and post-event inspection, repairability, and rapid functional recovery. Multi-hazard contexts—near-fault pulses, aftershock sequences, wind–seismic interaction, thermal/environmental effects—are especially welcome. The session’s goal is to distill mechanistic insight into trustworthy design rules and details that shorten downtime and elevate community resilience.