{ "model": { "rank": 4786, "code": "thing-q62932", "model_id": "vr.tr.elasticity", "name": "elasticity", "purpose": "Let an agent explain elasticity in materials and mechanics, relay moduli, theories and measurement from references, describe special forms and applications, and distinguish the mechanical sense from economic elasticity.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.QLT", "industry": "", "version": "", "url": "/models/thing/q62932/", "tier": 2, "score": 72, "payload": { "layer": "wikidata", "aliases": [ "rubber state", "Distensibility", "rope elongation", "photoelasticity", "thermoelasticity", "poroelasticity", "aeroelasticity", "Cauchy elastic material", "elasticity of cell membranes", "Incremental deformations", "Rubber elasticity" ], "aliasCount": 11, "merged": 11, "knownIn": 72, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.elasticity", "source": { "dataset": "wikidata", "item": "Q62932", "url": "https://www.wikidata.org/wiki/Q62932", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T01:04:35Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q62932", "registryId": "vr.tr.elasticity", "name": "elasticity", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.QLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q62932/", "model": { "registry_id": "vr.tr.elasticity", "name": "elasticity", "purpose": "Let an agent explain elasticity in materials and mechanics, relay moduli, theories and measurement from references, describe special forms and applications, and distinguish the mechanical sense from economic elasticity.", "definition": "The property of a material to return to its original shape and size after a deforming force is removed, described by moduli such as Young modulus and by stress-strain relations, with linear elasticity for small strains, rubber elasticity in the entropic rubber state of polymers, and coupled forms such as thermoelasticity, poroelasticity and photoelasticity used to visualise stress; elasticity underlies structural engineering, materials science and geophysics, and the word also names responsiveness measures in economics, a separate sense.", "what_it_is_for": "Not applicable; a material property.", "affordances": [ "explain the property and theory", "relay moduli and measurement", "describe special forms", "distinguish from economic elasticity" ], "distinguishing_features": [ "Reversibility", "Hooke law regime", "Moduli and Poisson ratio", "Entropic elasticity in rubbers" ], "appearance": "Not a visible object; seen as a stretched material returning to shape.", "visual_identification": [ "Reversible deformation under load", "Linear, rubber, thermo-, poro- and photoelasticity", "Plasticity is permanent deformation; viscosity is flow; economic elasticity measures responsiveness" ], "physical_properties": [ { "quantity": "Young modulus of steel", "typical_range": "about 200", "unit": "GPa", "note": "" }, { "quantity": "Young modulus of rubber", "typical_range": "about 0.01-0.1", "unit": "GPa", "note": "" }, { "quantity": "Poisson ratio range", "typical_range": "-1 to 0.5", "unit": "ratio", "note": "isotropic materials" } ], "families_and_kinds": [ "linear elasticity", "nonlinear and hyperelasticity", "rubber elasticity and the rubber state", "thermoelasticity", "poroelasticity", "photoelasticity", "distensibility and compliance in physiology", "rope and fibre elongation in engineering" ], "related_models": [ { "relation": "is a kind of", "target": "thermodynamic material property", "why": "in registry terms" }, { "relation": "is described by", "target": "Hooke law", "why": "in the linear regime" }, { "relation": "is quantified by", "target": "elastic modulus", "why": "such as Young modulus" }, { "relation": "is contrasted with", "target": "plasticity", "why": "permanent deformation" } ], "identifiers": [], "standards_and_regulation": [ "ASTM and ISO standards for tensile testing and modulus measurement", "Design codes using elastic analysis" ], "failure_modes_and_hazards": [ "Exceeding the elastic limit", "Confusing elasticity with stiffness or strength", "Confusing senses of elasticity" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What elasticity is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is elasticity, and how does it differ from plasticity, stiffness and strength?", "kind": "definition" }, { "text": "Is the question about mechanical or economic elasticity?", "kind": "boundary" } ] } ] }, { "id": "theory", "name": "Theory", "description": "Theory and moduli.", "findings": [ { "id": "theory-finding", "name": "Theory", "description": "Theory.", "questions": [ { "text": "How do Hooke law, Young modulus, shear modulus and Poisson ratio describe elastic behaviour?", "kind": "definition" }, { "text": "Which entry fits the specific modulus?", "kind": "action" } ] } ] } ] }, { "id": "forms", "name": "Forms", "description": "Special forms.", "rationale": "Science.", "layers": [ { "id": "rubber", "name": "Rubber", "description": "Rubber elasticity.", "findings": [ { "id": "rubber-finding", "name": "Rubber", "description": "Rubber.", "questions": [ { "text": "Why are rubbers elastic through entropy, and what is the rubber state?", "kind": "provenance" }, { "text": "Which entry fits polymer physics?", "kind": "action" } ] } ] }, { "id": "coupled", "name": "Coupled", "description": "Coupled elasticity.", "findings": [ { "id": "coupled-finding", "name": "Coupled", "description": "Coupled.", "questions": [ { "text": "What are thermoelasticity, poroelasticity and photoelasticity, and where are they used?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] } ] }, { "id": "measure", "name": "Measure", "description": "Measurement and design.", "rationale": "Practice.", "layers": [ { "id": "testing", "name": "Testing", "description": "Testing.", "findings": [ { "id": "testing-finding", "name": "Testing", "description": "Testing.", "questions": [ { "text": "How are elastic properties measured by tensile tests and other methods?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "design", "name": "Design", "description": "Engineering design.", "findings": [ { "id": "design-finding", "name": "Design", "description": "Design.", "questions": [ { "text": "How is elasticity used in structural and mechanical design, including rope elongation?", "kind": "provenance" }, { "text": "Which entry fits structural analysis?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Biology and history.", "rationale": "Context.", "layers": [ { "id": "biology", "name": "Biology", "description": "Elasticity in biology.", "findings": [ { "id": "biology-finding", "name": "Biology", "description": "Biology.", "questions": [ { "text": "How do distensibility and compliance describe elasticity in vessels and tissues?", "kind": "provenance" }, { "text": "Which entry fits arterial compliance?", "kind": "action" } ] } ] }, { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did Hooke, Young, Cauchy and others develop elasticity theory?", "kind": "provenance" }, { "text": "Which entry fits the history of mechanics?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should rubber elasticity and poroelasticity be separate entries?", "How should material data be linked?", "The registry entry has merged aliases naming special forms and physiological terms; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a elasticity, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain elasticity in materials and mechanics, relay moduli, theories and measurement from references, describe special forms and applications, and distinguish the mechanical sense from economic elasticity.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: rubber state, Distensibility, rope elongation, photoelasticity, thermoelasticity, poroelasticity, aeroelasticity, Cauchy elastic material, elasticity of cell membranes, Incremental deformations, Rubber elasticity.", "11 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 72 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a elasticity, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "rubber state", "Distensibility", "rope elongation", "photoelasticity", "thermoelasticity", "poroelasticity", "aeroelasticity", "Cauchy elastic material", "elasticity of cell membranes", "Incremental deformations", "Rubber elasticity" ] } ], "standing": "Described in 72 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 11 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one elasticity from another, and a elasticity from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a elasticity sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a elasticity from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a elasticity passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a elasticity between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a elasticity, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a elasticity is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What elasticity is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of elasticity are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is elasticity operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of elasticity and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of elasticity?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as elasticity?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a elasticity came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a elasticity and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a elasticity is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a elasticity, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a elasticity, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a elasticity is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }