{"public_id":"cl_c72778c633bc8cbbfcf97e560c8f47b4","status":"active","superseded_by_public_id":null,"corpus_id":114803577,"text":"Shake table tests on a five-story steel frame showed that a track nonlinear energy sink with a 2% mass ratio can substantially reduce seismic responses, with peak response reductions up to 50% and root mean square response reductions up to 80%.","confidence":0.99,"paper":{"corpus_id":114803577,"title":"Optimization design and experimental verification of track nonlinear energy sink for vibration control under seismic excitation","url":"https://sah.borca.ai/papers/114803577"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.99,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_5f1dc0e43868a28ce25f87d702ff00de","name":"track nonlinear energy sink","description":"A nonlinear energy sink design in which the attached mass slides along a track to dissipate and redistribute vibration energy.","types":["method","device"],"url":"https://sah.borca.ai/concepts/co_5f1dc0e43868a28ce25f87d702ff00de"},{"public_id":"co_ba4c8d0a89d3c9275035fa856963f7c6","name":"five-story steel frame","description":"A five-level steel building frame used as the test structure in the shake table experiments.","types":["test structure"],"url":"https://sah.borca.ai/concepts/co_ba4c8d0a89d3c9275035fa856963f7c6"},{"public_id":"co_d4ae60018400408eed693f64ff050df2","name":"shake table tests","description":"Laboratory experiments that subject a structure to controlled earthquake-like shaking.","types":["experiment"],"url":"https://sah.borca.ai/concepts/co_d4ae60018400408eed693f64ff050df2"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_c72778c633bc8cbbfcf97e560c8f47b4"}