{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2FADQFBIXXU5J6NQSIGZCGVEJA","short_pith_number":"pith:2FADQFBI","canonical_record":{"source":{"id":"1907.02208","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-07-02T16:09:28Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"fab7a9425e1abb272fff06f415b97a25038d828c840a1f0c5376feaae32edaf9","abstract_canon_sha256":"e9ae8a42d92dc6d40c7954b7ef46f101da6c871c146eb8adaeb0e71d4235b179"},"schema_version":"1.0"},"canonical_sha256":"d140381428bde9d4f9b0920d911aa4482400afeb524cc7c912c236972afaae4c","source":{"kind":"arxiv","id":"1907.02208","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02208","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02208v1","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02208","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"pith_short_12","alias_value":"2FADQFBIXXU5","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"2FADQFBIXXU5J6NQ","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"2FADQFBI","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2FADQFBIXXU5J6NQSIGZCGVEJA","target":"record","payload":{"canonical_record":{"source":{"id":"1907.02208","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-07-02T16:09:28Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"fab7a9425e1abb272fff06f415b97a25038d828c840a1f0c5376feaae32edaf9","abstract_canon_sha256":"e9ae8a42d92dc6d40c7954b7ef46f101da6c871c146eb8adaeb0e71d4235b179"},"schema_version":"1.0"},"canonical_sha256":"d140381428bde9d4f9b0920d911aa4482400afeb524cc7c912c236972afaae4c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:29.409542Z","signature_b64":"CmtU+grQ064y1gJC3/J9sT73nvorRRJ770SStbFTilMK0Bq2jAdMKYieo6t/oSeAXVX6CXgKPQs/RA9Ooz/uBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d140381428bde9d4f9b0920d911aa4482400afeb524cc7c912c236972afaae4c","last_reissued_at":"2026-05-17T23:41:29.408779Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:29.408779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.02208","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":"2026-05-17T23:41:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AcJlg1gFukuV9qASbQ4+LFeWu6vpBHaxoGlRIWVNB02z/1VQr+RwriRIMSUV4sQxunobL0kfJGWMpfqnyoK8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:09:57.773947Z"},"content_sha256":"703cbcbb6ba392031857f578c33e4f74a8fdea3f2a2b382e94e79e73aa61b3b1","schema_version":"1.0","event_id":"sha256:703cbcbb6ba392031857f578c33e4f74a8fdea3f2a2b382e94e79e73aa61b3b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2FADQFBIXXU5J6NQSIGZCGVEJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surrogate model approach for investigating the stability of a friction-induced oscillator of Duffing's type","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Amelie Fau, Jan N. Fuhg","submitted_at":"2019-07-02T16:09:28Z","abstract_excerpt":"Parametric studies for dynamic systems are of high interest to detect instability domains. This prediction can be demanding as it requires a refined exploration of the parametric space due to the disrupted mechanical behavior. In this paper, an efficient surrogate strategy is proposed to investigate the behavior of an oscillator of Duffing's type in combination with an elasto-plastic friction force model. Relevant quantities of interest are discussed. Sticking time is considered using a machine learning technique based on Gaussian processes called kriging. The largest Lyapunov exponent is prop"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02208","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":"2026-05-17T23:41:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fRmuPbHsVeTA13bYr5fJPDhLHEAOtXc6RD9m0bjexIVrtHwzdp80aN9TPUnNyQQ9hJ/Ru69oRhmDTQb6Gj6kDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:09:57.774286Z"},"content_sha256":"001cdb692fc8b3022a9e34f78909db21462d4f48c65fd3ca68ac63fbe0bc12ab","schema_version":"1.0","event_id":"sha256:001cdb692fc8b3022a9e34f78909db21462d4f48c65fd3ca68ac63fbe0bc12ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/bundle.json","state_url":"https://pith.science/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/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":"2026-05-31T15:09:57Z","links":{"resolver":"https://pith.science/pith/2FADQFBIXXU5J6NQSIGZCGVEJA","bundle":"https://pith.science/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/bundle.json","state":"https://pith.science/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2FADQFBIXXU5J6NQSIGZCGVEJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2FADQFBIXXU5J6NQSIGZCGVEJA","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":"e9ae8a42d92dc6d40c7954b7ef46f101da6c871c146eb8adaeb0e71d4235b179","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-07-02T16:09:28Z","title_canon_sha256":"fab7a9425e1abb272fff06f415b97a25038d828c840a1f0c5376feaae32edaf9"},"schema_version":"1.0","source":{"id":"1907.02208","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02208","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02208v1","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02208","created_at":"2026-05-17T23:41:29Z"},{"alias_kind":"pith_short_12","alias_value":"2FADQFBIXXU5","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"2FADQFBIXXU5J6NQ","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"2FADQFBI","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:001cdb692fc8b3022a9e34f78909db21462d4f48c65fd3ca68ac63fbe0bc12ab","target":"graph","created_at":"2026-05-17T23:41:29Z","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":"Parametric studies for dynamic systems are of high interest to detect instability domains. This prediction can be demanding as it requires a refined exploration of the parametric space due to the disrupted mechanical behavior. In this paper, an efficient surrogate strategy is proposed to investigate the behavior of an oscillator of Duffing's type in combination with an elasto-plastic friction force model. Relevant quantities of interest are discussed. Sticking time is considered using a machine learning technique based on Gaussian processes called kriging. The largest Lyapunov exponent is prop","authors_text":"Amelie Fau, Jan N. Fuhg","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-07-02T16:09:28Z","title":"Surrogate model approach for investigating the stability of a friction-induced oscillator of Duffing's type"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02208","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":"sha256:703cbcbb6ba392031857f578c33e4f74a8fdea3f2a2b382e94e79e73aa61b3b1","target":"record","created_at":"2026-05-17T23:41:29Z","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":"e9ae8a42d92dc6d40c7954b7ef46f101da6c871c146eb8adaeb0e71d4235b179","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-07-02T16:09:28Z","title_canon_sha256":"fab7a9425e1abb272fff06f415b97a25038d828c840a1f0c5376feaae32edaf9"},"schema_version":"1.0","source":{"id":"1907.02208","kind":"arxiv","version":1}},"canonical_sha256":"d140381428bde9d4f9b0920d911aa4482400afeb524cc7c912c236972afaae4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d140381428bde9d4f9b0920d911aa4482400afeb524cc7c912c236972afaae4c","first_computed_at":"2026-05-17T23:41:29.408779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:29.408779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CmtU+grQ064y1gJC3/J9sT73nvorRRJ770SStbFTilMK0Bq2jAdMKYieo6t/oSeAXVX6CXgKPQs/RA9Ooz/uBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:29.409542Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.02208","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:703cbcbb6ba392031857f578c33e4f74a8fdea3f2a2b382e94e79e73aa61b3b1","sha256:001cdb692fc8b3022a9e34f78909db21462d4f48c65fd3ca68ac63fbe0bc12ab"],"state_sha256":"d6301688a1aef9a9aa4efdb0032aaa06634bb77689e253497abcae002d778548"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Zw2QsWHYiD1PytvOFoxH8U1ZDRzmwL2T0T5VgbxGXzowDfZ/HoTbJxvVKNKfONprz59w/A+KdB/WdEcKvYEAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T15:09:57.777704Z","bundle_sha256":"654cb7b6ddbf2b0eb5d5c57c68fef19566a974e7e9452b3efe04bf47c1d06eb2"}}