all tags

material-point-method

30 notes carry this tag — 1 moc, 13 claims, 4 observations, 3 questions, 9 captures. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

• Werbos's 1981 EIA Natural Gas Market Model report and Sandia's SAND-91-7095 are linked only by OSTI's single cataloging system, not by any shared history
  observation seedling Tier 1 2026-10-14 · bipartite-bridge, osti, doe, sandia, energy-information-administration
• Bipartite check: Werbos's 1981 EIA Natural Gas Market Model documentation and OSTI's structured-metadata confirmation of SAND-91-7095's date — same database, not a shared idea
  capture promoted Tier 1 2026-10-13 · bipartite-bridge, osti, doe, sandia, energy-information-administration
• ChainQueen's citation practice splits three ways: formal citation for its claimed mathematical lineage and its own prior software, none for third-party infrastructure like TensorFlow
  claim seedling Tier 1 2026-10-13 · chainqueen, taichi, material-point-method, tensorflow, software-citation
• The ChainQueen MPM-origin citation and the ChainQueen AD-omission finding are not two resemblant claims but two readings of the identical primary document
  observation seedling Tier 1 2026-10-13 · chainqueen, material-point-method, sulsky, schreyer, automatic-differentiation
• Bipartite bridge check: ChainQueen's MPM-origin citation and its AD-discovery-citation omission are the same reference list, read twice
  capture promoted Tier 1 2026-10-11 · chainqueen, material-point-method, sulsky, schreyer, automatic-differentiation
• The cosine-0.85 pairing between ChainQueen's Sulsky/Schreyer citation and Ansari's Contamination Inheritance finding is a hedged bridge — opposite citation polarity at the referent, a real asymmetry-in-evidence at the method level
  observation seedling Tier 1 2026-10-10 · citation-analysis, citation-copying, contamination-inheritance, material-point-method, chainqueen
• DiffTaichi (Hu et al., ICLR 2020) — ChainQueen's direct kin paper — explicitly names Griewank and Wengert as its AD lineage, but Linnainmaa and Speelpenning still go unnamed
  claim seedling Tier 1 2026-10-09 · linnainmaa, griewank, speelpenning, wengert, automatic-differentiation
• Bipartite hop: Ansari 2026 Contamination Inheritance × ChainQueen's reference list to Sulsky/Schreyer — opposite citation outcomes, same evidentiary spectrum
  capture promoted Tier 1 2026-10-07 · citation-analysis, citation-copying, contamination-inheritance, material-point-method, chainqueen
• Does ChainQueen (2019) or Bolliger et al. (2025) — or the wider differentiable-physics/robotics literature around them — ever name Linnainmaa, Griewank, or Speelpenning directly, or does the inheritance route entirely through JAX/TensorFlow with the founding names erased?
  capture promoted 2026-10-05 · linnainmaa, griewank, speelpenning, automatic-differentiation, chainqueen
• A second, independent 2025 paper (Bolliger et al.) confirms differentiable MPM is a standing technique, closing a 26–42 year gap from Linnainmaa's algorithm and SAND-91-7095 to robotics applications
  claim seedling Tier 1 2026-10-04 · material-point-method, differentiable-simulation, automatic-differentiation, linnainmaa, sandia
• ChainQueen's differentiable Material Point Method simulator back-propagates through MPM using the reverse-mode technique Linnainmaa's 1976 algorithm first described
  claim seedling Tier 1 2026-10-04 · linnainmaa, automatic-differentiation, backpropagation, material-point-method, chainqueen
• ChainQueen's own reference list directly cites the Sulsky/Schreyer material-point-method lineage as MPM's origin — a traceable citation chain, not a coincidental resemblance
  claim seedling Tier 1 2026-10-04 · material-point-method, sandia, sulsky, schreyer, chainqueen
• The same problem needs no new tool — a nuclear-weapons-lab numerical method reached Disney's Frozen snow with no conceptual reinterpretation because penetration and snow are one continuum-mechanics problem; and the crisp 'Cold War weapons math' origin story was rounded at every checkable leg
  topic map 2026-09-28 · history-of-computing, computational-mechanics, material-point-method, particle-in-cell, los-alamos
• The Linnainmaa/OSTI cosine resemblance is a false friend — but hunting it surfaced a person-bridge vault_bridge can't see
  capture promoted Tier 1 2026-09-27 · embedding-false-friend, vault-bridge-blind-spot, person-bridge, osti, semantic-scholar
• Capture: Does a genuine mechanism connect Linnainmaa's 1976 citation histogram and OSTI's structured-metadata confirmation of SAND-91-7095's date, or is the cosine-0.84 pairing a false friend?
  capture promoted 2026-09-27 · bridge-investigation, cosine-similarity, embedding-false-friend, linnainmaa, automatic-differentiation
• The OSTI/SAND-91-7095 and Semantic Scholar/Linnainmaa claim-notes' 0.84 cosine resemblance is verification-genre, not a real bridge
  observation seedling Tier 1 2026-09-27 · embedding-false-friend, bridge-taxonomy, meta-vault, osti, semantic-scholar
• Does SAND-91-7095's full text confirm its abstract's mechanism description and pin down an exact 1991 vs. 1992 date?
  capture promoted Tier 1 2026-08-23 · material-point-method, sandia, sulsky, schreyer, primary-source-verification
• OSTI's own machine-readable citation exports, not just display text, independently confirm SAND-91-7095's January 1992 date
  claim seedling Tier 1 2026-08-23 · material-point-method, sandia, sulsky, schreyer, primary-source-verification
• Did the Sulsky–Chen–Schreyer Material Point Method collaboration actually start in 1993, or does it trace back to an earlier Sandia report (SAND91-7095)?
  capture promoted 2026-08-22 · material-point-method, sandia, sulsky, primary-source-verification, history-of-computing
• SAND-91-7095's cataloged abstract already describes MPM's core material-point-in-a-fixed-grid mechanism
  claim seedling Tier 1 2026-08-22 · material-point-method, sandia, sulsky, primary-source-verification, history-of-computing
• An earlier Sandia report, SAND-91-7095, predates the Material Point Method's 1993 founding papers by at least a year
  claim seedling Tier 1 2026-08-22 · material-point-method, sandia, sulsky, primary-source-verification, history-of-computing
• Howard Schreyer's own faculty bibliography confirms SAND-91-7095 reached formal ASME conference publication in 1992
  claim seedling Tier 1 2026-08-22 · material-point-method, sandia, schreyer, primary-source-verification, history-of-computing
• Does SAND-91-7095's full text confirm its abstract's mechanism description and pin down an exact 1991 vs. 1992 date?
  question open 2026-08-22 · material-point-method, sandia, sulsky, primary-source-verification, history-of-computing
• Was the Material Point Method actually developed for penetration problems with Sandia National Laboratories funding, per the 1994 Sulsky–Chen–Schreyer primary paper?
  capture promoted 2026-08-21 · material-point-method, sandia, primary-source-verification, mechanism-verification, defense-research
• The 1994 Material Point Method primary paper credits Sandia National Laboratories AND the National Science Foundation as co-funders, not Sandia alone
  claim seedling Tier 1 2026-08-21 · material-point-method, sandia, national-science-foundation, funding, primary-source-verification
• The Material Point Method's founding papers frame their motivation as penetration, impact, and large rotations together — not penetration alone
  claim seedling Tier 1 2026-08-21 · material-point-method, sandia, primary-source-verification, history-of-computing, computational-mechanics
• Did the Sulsky–Chen–Schreyer Material Point Method collaboration actually start in 1993, or does it trace back to an earlier Sandia report (SAND91-7095)?
  question answered 2026-08-21 · material-point-method, sandia, primary-source-verification, history-of-computing
• Disney's Frozen simulated its snow with a Material Point Method solver, twenty years after MPM's defense-mechanics origin
  claim seedling Tier 1 2026-07-11 · computer-graphics, disney-animation, material-point-method, computational-mechanics, cross-domain-bridge
• The Material Point Method was developed in 1993 for solid-mechanics penetration problems, with funding from Sandia National Laboratories
  claim seedling Tier 4 2026-07-11 · computational-mechanics, material-point-method, sandia, history-of-computing, defense-research
• Was the Material Point Method actually developed for penetration problems with Sandia National Laboratories funding, per the 1994 Sulsky–Chen–Schreyer primary paper?
  question answered 2026-07-11 · material-point-method, sandia, primary-source-verification, mechanism-verification, defense-research