{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4IDSFX3P6DCOKUCAFJWSY2MSF3","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":"7c7f47a739d46885d23ca1f50e1f5833c04d06750b195a017fa6021608563178","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-10T11:06:09Z","title_canon_sha256":"a0af6985f55d7ef3a146a96efd73e8e38f1a03bc361206a42257ea7b9134ee98"},"schema_version":"1.0","source":{"id":"1810.04455","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.04455","created_at":"2026-05-18T00:03:40Z"},{"alias_kind":"arxiv_version","alias_value":"1810.04455v1","created_at":"2026-05-18T00:03:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.04455","created_at":"2026-05-18T00:03:40Z"},{"alias_kind":"pith_short_12","alias_value":"4IDSFX3P6DCO","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4IDSFX3P6DCOKUCA","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4IDSFX3P","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:23f9771aaea8fbf02cef5322997aa2424523b5407939914e0e3bc7dd8e66a9ad","target":"graph","created_at":"2026-05-18T00:03:40Z","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":"Adhesive [e.g. van der Waals] forces were not generally taken into account in contact mechanics until 1971, when Johnson, Kendall and Roberts (JKR) generalized Hertz' solution for an elastic sphere using an energetic argument which we now recognize to be analogous to that used in linear elastic fracture mechanics. A significant result is that the load-displacement relation exhibits instabilities in which approaching bodies `jump in' to contact, whereas separated bodies `jump out' at a tensile `pull-off force'. The JKR approach has since been widely used in other geometries, but at small length","authors_text":"A.Papangelo, J.Joe, JR Barber, M.Ciavarella","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-10T11:06:09Z","title":"The role of adhesion in contact mechanics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.04455","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:bf52f469684909baf0c7f1ee2c23a232f0c2c38d8d240317e8d40bf5b83b5bbb","target":"record","created_at":"2026-05-18T00:03:40Z","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":"7c7f47a739d46885d23ca1f50e1f5833c04d06750b195a017fa6021608563178","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-10T11:06:09Z","title_canon_sha256":"a0af6985f55d7ef3a146a96efd73e8e38f1a03bc361206a42257ea7b9134ee98"},"schema_version":"1.0","source":{"id":"1810.04455","kind":"arxiv","version":1}},"canonical_sha256":"e20722df6ff0c4e550402a6d2c69922edd7ea45caa515d72593ecc3356114fe8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e20722df6ff0c4e550402a6d2c69922edd7ea45caa515d72593ecc3356114fe8","first_computed_at":"2026-05-18T00:03:40.078518Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:40.078518Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jP7EcltU6G7qww5YhVYXibNJXVvnlSIcEVEx35D+qoILSi86TxjpComXgxkMnLfuaXAE8Bw+iOslI7a2FuJbAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:40.078969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.04455","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf52f469684909baf0c7f1ee2c23a232f0c2c38d8d240317e8d40bf5b83b5bbb","sha256:23f9771aaea8fbf02cef5322997aa2424523b5407939914e0e3bc7dd8e66a9ad"],"state_sha256":"8d60725589273ae0b112f62a36bf4a4ba9010159ea12862fd6ac798d1692be64"}