{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VXOI7XG7XHZMXSCD45JSJJYITR","short_pith_number":"pith:VXOI7XG7","canonical_record":{"source":{"id":"1705.07724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-05-08T14:44:42Z","cross_cats_sorted":[],"title_canon_sha256":"7fb1e5f8de2f0ab5ea241cd0c27f36b76594329c17e866518e5f2a98d280fe69","abstract_canon_sha256":"b63ef8576f43e9a1d998ccc62bc9e3f12b5053112f49ea7ece8f07d6678fb4b7"},"schema_version":"1.0"},"canonical_sha256":"addc8fdcdfb9f2cbc843e75324a7089c4e9d078ad2f5e0c20dd83a9dd96cac5e","source":{"kind":"arxiv","id":"1705.07724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.07724","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"arxiv_version","alias_value":"1705.07724v1","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.07724","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"pith_short_12","alias_value":"VXOI7XG7XHZM","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VXOI7XG7XHZMXSCD","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VXOI7XG7","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VXOI7XG7XHZMXSCD45JSJJYITR","target":"record","payload":{"canonical_record":{"source":{"id":"1705.07724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-05-08T14:44:42Z","cross_cats_sorted":[],"title_canon_sha256":"7fb1e5f8de2f0ab5ea241cd0c27f36b76594329c17e866518e5f2a98d280fe69","abstract_canon_sha256":"b63ef8576f43e9a1d998ccc62bc9e3f12b5053112f49ea7ece8f07d6678fb4b7"},"schema_version":"1.0"},"canonical_sha256":"addc8fdcdfb9f2cbc843e75324a7089c4e9d078ad2f5e0c20dd83a9dd96cac5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:04.741900Z","signature_b64":"NfQjx4/fA93DPLGnbj5odmp4prO0gTG4ef9fosrE53Y77n+ie1+H05BlO8UriQnN+5n9hjTVJZgx4r8VytlVBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"addc8fdcdfb9f2cbc843e75324a7089c4e9d078ad2f5e0c20dd83a9dd96cac5e","last_reissued_at":"2026-05-18T00:44:04.741214Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:04.741214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.07724","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tXPPDfw/f9q+9ecWOpahqybLF87VB5GZri+VSrXhseZY8chqDhORb9JsWZogKgkZEfOqJjmlkry/tF0zF5aKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:14:02.921025Z"},"content_sha256":"84d161d52dcfb09947f15231491ea98e3ee2cfbf6ca53030f8b92bd1278ae1c0","schema_version":"1.0","event_id":"sha256:84d161d52dcfb09947f15231491ea98e3ee2cfbf6ca53030f8b92bd1278ae1c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VXOI7XG7XHZMXSCD45JSJJYITR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-domain and three-domain limit cycles in a typical aeroelastic system with freeplay in pitch","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Earl H. Dowell, Edouard Verstraelen, Grigorios Dimitriadis, Gustavo Dal Ben Rossetto","submitted_at":"2017-05-08T14:44:42Z","abstract_excerpt":"Freeplay is a significant source of nonlinearity in aeroelastic systems and is strictly regulated by airworthiness authorities. It splits the phase plane of such systems into three piecewise linear subdomains. Depending on the location of the freeplay, limit cycle oscillations can result that span either two or three of these subdomains. The purpose of this work is to demonstrate the existence of two-domain cycles both theoretically and experimentally. A simple aeroelastic system with pitch, plunge and control deflection degrees of freedom is investigated in the presence of freeplay in pitch. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.07724","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HR9GPfWAj7SSzjAkV/WSG3UZrqRwzSsjgECKeZuJCxTBn9Cs9yzit5faziF7y66BUKpQ7om8xnVwmU0r316PAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:14:02.921766Z"},"content_sha256":"096561811b843b6362bc94b8c41f9fad5d2b144a3b3770f9c407263bea12914f","schema_version":"1.0","event_id":"sha256:096561811b843b6362bc94b8c41f9fad5d2b144a3b3770f9c407263bea12914f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VXOI7XG7XHZMXSCD45JSJJYITR/bundle.json","state_url":"https://pith.science/pith/VXOI7XG7XHZMXSCD45JSJJYITR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VXOI7XG7XHZMXSCD45JSJJYITR/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-10T00:14:02Z","links":{"resolver":"https://pith.science/pith/VXOI7XG7XHZMXSCD45JSJJYITR","bundle":"https://pith.science/pith/VXOI7XG7XHZMXSCD45JSJJYITR/bundle.json","state":"https://pith.science/pith/VXOI7XG7XHZMXSCD45JSJJYITR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VXOI7XG7XHZMXSCD45JSJJYITR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VXOI7XG7XHZMXSCD45JSJJYITR","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b63ef8576f43e9a1d998ccc62bc9e3f12b5053112f49ea7ece8f07d6678fb4b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-05-08T14:44:42Z","title_canon_sha256":"7fb1e5f8de2f0ab5ea241cd0c27f36b76594329c17e866518e5f2a98d280fe69"},"schema_version":"1.0","source":{"id":"1705.07724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.07724","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"arxiv_version","alias_value":"1705.07724v1","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.07724","created_at":"2026-05-18T00:44:04Z"},{"alias_kind":"pith_short_12","alias_value":"VXOI7XG7XHZM","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VXOI7XG7XHZMXSCD","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VXOI7XG7","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:096561811b843b6362bc94b8c41f9fad5d2b144a3b3770f9c407263bea12914f","target":"graph","created_at":"2026-05-18T00:44:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Freeplay is a significant source of nonlinearity in aeroelastic systems and is strictly regulated by airworthiness authorities. It splits the phase plane of such systems into three piecewise linear subdomains. Depending on the location of the freeplay, limit cycle oscillations can result that span either two or three of these subdomains. The purpose of this work is to demonstrate the existence of two-domain cycles both theoretically and experimentally. A simple aeroelastic system with pitch, plunge and control deflection degrees of freedom is investigated in the presence of freeplay in pitch. ","authors_text":"Earl H. Dowell, Edouard Verstraelen, Grigorios Dimitriadis, Gustavo Dal Ben Rossetto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-05-08T14:44:42Z","title":"Two-domain and three-domain limit cycles in a typical aeroelastic system with freeplay in pitch"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.07724","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:84d161d52dcfb09947f15231491ea98e3ee2cfbf6ca53030f8b92bd1278ae1c0","target":"record","created_at":"2026-05-18T00:44:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b63ef8576f43e9a1d998ccc62bc9e3f12b5053112f49ea7ece8f07d6678fb4b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-05-08T14:44:42Z","title_canon_sha256":"7fb1e5f8de2f0ab5ea241cd0c27f36b76594329c17e866518e5f2a98d280fe69"},"schema_version":"1.0","source":{"id":"1705.07724","kind":"arxiv","version":1}},"canonical_sha256":"addc8fdcdfb9f2cbc843e75324a7089c4e9d078ad2f5e0c20dd83a9dd96cac5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"addc8fdcdfb9f2cbc843e75324a7089c4e9d078ad2f5e0c20dd83a9dd96cac5e","first_computed_at":"2026-05-18T00:44:04.741214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:04.741214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NfQjx4/fA93DPLGnbj5odmp4prO0gTG4ef9fosrE53Y77n+ie1+H05BlO8UriQnN+5n9hjTVJZgx4r8VytlVBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:04.741900Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.07724","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84d161d52dcfb09947f15231491ea98e3ee2cfbf6ca53030f8b92bd1278ae1c0","sha256:096561811b843b6362bc94b8c41f9fad5d2b144a3b3770f9c407263bea12914f"],"state_sha256":"b8225d77d0027af0308ab0186f133664c691bad8c3e8a59dddcae49a00a5c3cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zx+dEryxN93u7RME/8gOKyA5tr7E//leihZauXJgC176apTXWIXjbZ2ApjtpEx97j/3Afm1HOxZLJK1WP/2GCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T00:14:02.926150Z","bundle_sha256":"315fcbfd1a7419225632bfda9178bd3f3474197834a3b7462e43ba65f086b961"}}