forked from 1b-agent/fieldcraft-upstream
f4a0333d28
* Nastran bulk data writer: fixed-format entries, exact large-field reals, SOL 101/103 decks Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * Nastran writer tests: golden decks, a re-reader of our output, node order against Nastran's conventions Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * docs: Nastran writer in the roadmap, parity table and deck notes Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * Nastran writer: simplify planning (subcases, one property table), stream cards into the deck, write through the VFS ElementKind::corner_count/is_quadratic and Dofs::bits/from_bits join the model. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * Nastran joins the shared deck formats; deck.write chooses steps for every format nastran::write_resolved is the FORMATS row; Format::write_steps and with_steps write a subset of steps (a Nastran run is static or frequency steps); problems go through the shared unsupported(). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm --------- Co-authored-by: jyviko <2501648+jyviko@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
83 lines
3.1 KiB
Plaintext
83 lines
3.1 KiB
Plaintext
$ Nastran bulk data written by ModelCraft
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$ units: unspecified
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SOL 103
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CEND
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TITLE = ModelCraft model
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ECHO = NONE
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SUBCASE 1
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SUBTITLE = Modes
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SPC = 1
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METHOD = 2
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DISPLACEMENT = ALL
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BEGIN BULK
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PARAM POST -1
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PARAM AUTOSPC YES
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PARAM COUPMASS 1
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$ nodes
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GRID* 81 -0.05 1.45
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* 0.45
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GRID* 82 2.15 1.5
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* 0.65
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GRID* 83 2. 0.15
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* 0.55
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GRID* 84 0.05 0.
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* 0.5
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GRID* 85 0.05 0.7
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* 0.95
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GRID* 86 1.05 1.5
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* 1.05
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GRID* 87 2.05 0.9
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* 1.15
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GRID* 88 1.05 0.1
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* 1.05
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GRID* 89 -0.05 0.75
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* 0.
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GRID* 90 1.05 1.45
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* 0.05
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GRID* 91 2.1 0.75
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* 0.05
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GRID* 92 1. 0.05
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* 0.
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GRID* 93 0. 1.4
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* 0.9
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GRID* 94 2.1 1.6
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* 1.2
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GRID* 95 2. 0.2
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* 1.1
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GRID* 96 0.1 0.
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* 1.
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GRID* 97 -0.1 1.5
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* 0.
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GRID* 98 2.2 1.4
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* 0.1
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GRID* 99 2. 0.1
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* 0.
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GRID* 100 0. 0.
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* 0.
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$ reference points
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$ reference point RP: GRID 99999999
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GRID* 99999999 1. 0.75
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* 2.
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$ materials
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$ material Steel: MAT1 1
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MAT1* 1 210000. 0.3
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* 7.85E-9
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$ properties
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$ section s: PSOLID 1
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PSOLID 1 1 THREE FULL
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$ elements
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CHEXA 7 1 100 99 98 97 96 95
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94 93 92 91 90 89 84 83
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82 81 88 87 86 85
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$ couplings
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$ coupling lid: RBE2 8
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RBE2 899999999 123456 85 86 87 88 93
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94 95 96
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$ boundary conditions
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$ step Modes: SPC 1
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SPC1 1 123456 89 90 91 92 97 98
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99 100
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$ eigenvalue extraction
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EIGRL* 2 5000. 6
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ENDDATA
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