{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:CY6W26NLOJJ2KQ6JPBIY47VGKB","short_pith_number":"pith:CY6W26NL","schema_version":"1.0","canonical_sha256":"163d6d79ab7253a543c978518e7ea6504c67e695e8799022b554af800adb0623","source":{"kind":"arxiv","id":"1410.6016","version":3},"attestation_state":"computed","paper":{"title":"Discontinuous Buckling of Wide Beams and Metabeams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Corentin Coulais, Johannes T. B. Overvelde, Katia Bertoldi, Luuk A. Lubbers, Martin van Hecke","submitted_at":"2014-10-22T12:22:11Z","abstract_excerpt":"We uncover how nonlinearities dramatically alter the buckling of elastic beams. First, we show experimentally that sufficiently wide ordinary elastic beams and specifically designed metabeams ---beams made from a mechanical metamaterial--- exhibit discontinuous buckling, an unstable form of buckling where the post-buckling stiffness is negative. Then we use simulations to uncover the crucial role of nonlinearities, and show that beams made from increasingly nonlinear materials exhibit increasingly negative post-buckling slope. Finally, we demonstrate that for sufficiently strong nonlinearity, "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1410.6016","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-10-22T12:22:11Z","cross_cats_sorted":[],"title_canon_sha256":"aec40b33047d446c8c4f7195a7aa5ef98274b5fbc817b2547e45deb90d108b2a","abstract_canon_sha256":"322d2721fdd82b2663d39015f34c0b3a6b13398d1f21c74bcfcadf5f7390bdea"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:32.769344Z","signature_b64":"vDeGEF7OJ6XVckQyT3Bn5vEIK5QElJRxl/hRw4MClUCFU6v3Cm5nMSeEoKOkkMQg/5sGMbFzIstAbziKv0IgBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"163d6d79ab7253a543c978518e7ea6504c67e695e8799022b554af800adb0623","last_reissued_at":"2026-05-18T01:35:32.768796Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:32.768796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discontinuous Buckling of Wide Beams and Metabeams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Corentin Coulais, Johannes T. B. Overvelde, Katia Bertoldi, Luuk A. Lubbers, Martin van Hecke","submitted_at":"2014-10-22T12:22:11Z","abstract_excerpt":"We uncover how nonlinearities dramatically alter the buckling of elastic beams. First, we show experimentally that sufficiently wide ordinary elastic beams and specifically designed metabeams ---beams made from a mechanical metamaterial--- exhibit discontinuous buckling, an unstable form of buckling where the post-buckling stiffness is negative. Then we use simulations to uncover the crucial role of nonlinearities, and show that beams made from increasingly nonlinear materials exhibit increasingly negative post-buckling slope. Finally, we demonstrate that for sufficiently strong nonlinearity, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6016","kind":"arxiv","version":3},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1410.6016","created_at":"2026-05-18T01:35:32.768889+00:00"},{"alias_kind":"arxiv_version","alias_value":"1410.6016v3","created_at":"2026-05-18T01:35:32.768889+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6016","created_at":"2026-05-18T01:35:32.768889+00:00"},{"alias_kind":"pith_short_12","alias_value":"CY6W26NLOJJ2","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_16","alias_value":"CY6W26NLOJJ2KQ6J","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_8","alias_value":"CY6W26NL","created_at":"2026-05-18T12:28:25.294606+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB","json":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB.json","graph_json":"https://pith.science/api/pith-number/CY6W26NLOJJ2KQ6JPBIY47VGKB/graph.json","events_json":"https://pith.science/api/pith-number/CY6W26NLOJJ2KQ6JPBIY47VGKB/events.json","paper":"https://pith.science/paper/CY6W26NL"},"agent_actions":{"view_html":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB","download_json":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB.json","view_paper":"https://pith.science/paper/CY6W26NL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1410.6016&json=true","fetch_graph":"https://pith.science/api/pith-number/CY6W26NLOJJ2KQ6JPBIY47VGKB/graph.json","fetch_events":"https://pith.science/api/pith-number/CY6W26NLOJJ2KQ6JPBIY47VGKB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB/action/storage_attestation","attest_author":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB/action/author_attestation","sign_citation":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB/action/citation_signature","submit_replication":"https://pith.science/pith/CY6W26NLOJJ2KQ6JPBIY47VGKB/action/replication_record"}},"created_at":"2026-05-18T01:35:32.768889+00:00","updated_at":"2026-05-18T01:35:32.768889+00:00"}