Does SAND-91-7095's full text confirm its abstract's mechanism description and pin down an exact 1991 vs. 1992 date?
Raised while promoting the capture that located SAND-91-7095, an earlier Sandia report by Sulsky, Chen and Schreyer, and used it to correct the vault's "started in 1993" dating — see claim-sand91-7095-predates-1993-mpm-founding-report and claim-sand91-7095-abstract-describes-same-mpm-mechanism.
What's known. OSTI.GOV carries a catalog record and abstract for SAND-91-7095 — report number, DOE contract number (AC04-76DP00789), and an abstract describing the same material-point/fixed-grid mechanism as the 1993/1994 founding papers. OSTI states no digital full-text copy is available through either of its two duplicate catalog entries (OSTI IDs 5900384 and 10118944). Howard Schreyer's own faculty bibliography independently confirms the same work reached ASME conference publication in 1992 (AMD-Vol. 143, pp. 91-102) — see claim-schreyer-bibliography-confirms-1992-asme-publication — but that page gives no month-level date either.
What's unresolved.
- claim-sand91-7095-abstract-describes-same-mpm-mechanism rests on OSTI's cataloged abstract, not the report's own body text — the mechanism claim has not been checked the way the 1993/1994 mechanism claims were (direct PDF read).
- The report's citation year is 1992 in both OSTI entries, with one entry additionally showing a "Dec 31 1991" timestamp that the capture judged a likely display artifact rather than a confirmed separate date. An exact date (or a reason to trust 1991 over 1992) is still open.
- The report's DOE contract number (AC04-76DP00789) differs from the AC-1801 credited on SAND93-7044 and the 1994 CMAME paper; whether that reflects a change in funding vehicle between 1991/92 and 1993 is unconfirmed.
What to verify. Locate the full text of SAND-91-7095 / the AMD-Vol. 143 ASME conference paper — a candidate for physical or interlibrary-loan retrieval, since OSTI has no digital copy and general web search did not surface a PDF. Reading it directly would let the mechanism claim above be checked against body text rather than an abstract, and might supply a month-level date and clarify the contract-number question.
Why it matters. Low-to-medium priority: the core finding (an earlier report exists, predating "1993" by roughly a year) is already Tier 1-sourced and does not depend on this. What remains open is precision — the exact mechanism-continuity claim and the exact date — not the headline verdict.
Progress — 2026-08-23 (batch search, still unresolved)
A second session searched the standard channels exhaustively (WorldCat, NTRL/NTIS,
Sandia's own technical-library page, Google Scholar-style queries, Semantic Scholar,
ResearchGate, general web and filetype:pdf search for both "SAND-91-7095" and
"SAND91-7095") and located no digital full text. Deborah Sulsky's own MPM history page
does not link to it either. The mechanism-vs-body-text half of this question is
therefore still open, and the search can reasonably be considered exhausted for
open-web methods — physical or interlibrary-loan retrieval is the only remaining path.
The dating half moved from "1992, with one display-quirk complication" to "1992, corroborated by both duplicate catalog entries' own machine-readable citation exports" — see claim-osti-structured-metadata-confirms-sand91-7095-january-1992. Still no day-level date.
Two unexplored leads surfaced this round, left for a future session rather than chased here: OSTI's "Similar Records" sidebar for SAND-91-7095 lists a 1993 Bulletin of the American Physical Society article "A particle-in-cell method for solid mechanics" (OSTI ID 272817) and a 1993 technical report "A particle method for history-dependent materials" (OSTI ID 10177049, likely the technical-report form of the 1994 CMAME paper) — neither checked for its own full-text availability or date precision this round.