Aging-induced dynamics for statically indeterminate systems.
basic_science · Level V
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- Record sourced from PubMed, PMID 34942733.
- Also identified by DOI 10.1103/PhysRevE.104.054902.
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Abstract
Statically indeterminate systems are experimentally demonstrated to be in fact dynamical. Take the classic problems of a beam with three supporting points, granules in a silo, and a ladder leaning against a wall, for instance; their reaction forces are found to vary logarithmically for over 10^{4}s with an increment or decrement of more than 10%. This seemingly contradictory mixture of dynamics for a static system is shown to derive from the evolution of microcontact area with the ground and/or wall due to the aging effect.