Energetic Stability and Structural Admissibility in Granular Systems: External Energetic Activation and Dynamically Triggered Collective Transition

This preprint develops a dynamically activated hydro-mechanical configurational framework for saturated granular systems within the broader theory of energetic stability and structural admissibility in granular materials. The work examines how externally supplied mechanical energy progressively activates hydro-mechanically weakened metastable structures and drives coupled configurational evolution toward dynamically triggered collective transition and liquefaction onset. Within the proposed framework, instability emerges through coupled interaction between: - cumulative energetic activation,- progressive barrier weakening,- hydro-mechanical redistribution,- configurational accessibility amplification,- and propagating collective rearrangement dynamics within an evolving non-convex energetic landscape. The manuscript emphasizes: - metastable admissible states,- barrier-controlled rearrangements,- hydro-mechanical coupling,- dynamically amplified configurational accessibility,- propagating destabilization fronts,- and hydro-mechanical marginal admissibility. Dynamically triggered liquefaction is interpreted not solely as constitutive pore-pressure accumulation or isolated stress exceedance, but as a collective configurational transition process emerging through externally activated hydro-mechanical destabilization. Related framework papers: • Energetic Stability and Structural Admissibility in Granular Systems: General Energetic Theory of Granular Systems DOI: 10.5281/zenodo.20056042 • Energetic Stability and Structural Admissibility in Granular Systems: Dry Configurational Micromechanics and Barrier-Controlled Rearrangements DOI: 10.5281/zenodo.20283705 • Energetic Stability and Structural Admissibility in Granular Systems: Hydro-Mechanical Coupling and Saturation-Induced Destabilization DOI: 10.5281/zenodo.20312365 This manuscript is a scientific preprint intended for theoretical discussion and future peer-reviewed development.