FEA ranking — front.stl

20260807T095442776382Z · PLA E=3500 MPa · gmsh + CalculiX · ranking only

This page ranks relative shell stiffness under a few static PLA loads (“does this rib help?”). It is not a drop test and not certification evidence.

Daily HOWTO: handheld/review/FEA-HOWTO.md · CE brief: handheld/review/cea-mechanical-drop-fea-brief.md

Badge meaning

PASS: Solver finished. Warnings still matter — not “design OK”.
SKIP: No mesh nodes in the load/fix region (often wrong half).
FAIL: Mesh/solver/pipeline error — fix and re-run.

STL

SHA-1 c0fd8214209a9aaf091a28e317b2851deb4b2bcb

/tmp/aesl-fea/stls/front.stl

Press the face centre (thumb on screen) SKIP

no nodes in load/fix region

418900 elems · fixed 6266 · loaded 0 · F=[0, 0, -30] N

max defl — mm · peak σ_vm — MPa · SF —

no material in fixed=6266 / loaded=0 region — case likely belongs to the other half

Bend across the long axis (grip + push) PASS

solver finished — not design OK

418900 elems · fixed 10050 · loaded 10107 · F=[0, 0, -20] N

max defl 38.9525 mm · peak σ_vm 50.868 MPa · SF 0.98

max deflection 38.9525 mm > 2.0 mm
peak von Mises 50.868 MPa = 102% of yield (isotropic; FDM layer bond is weaker)

Diagonal twist (one corner up) PASS

solver finished — not design OK

418900 elems · fixed 5506 · loaded 5463 · F=[0, 0, -15] N

max defl 90.6724 mm · peak σ_vm 44.174 MPa · SF 1.13

max deflection 90.6724 mm > 2.0 mm
peak von Mises 44.174 MPa = 88% of yield (isotropic; FDM layer bond is weaker)

Re-run after shell geometry changes: ./scripts/run_fea_ranking.sh