Seven anatomical volumes and their shared apparatus
Research candidate using original BodyParts3D bones, explicitly repaired derived P2 belly volumes and authored attachments, aponeuroses and tendon routes. The resting state and a default 0.5 kg loaded step pass reduced force, full boundary and tendon-path gates. Every new step must pass all gates before advancing time. Inspect the separately replayed lift/release evidence in the book.
Force targets match an independent Arm26 actuator model. Fitted stresses reach 20.38 MPa and full-activation local J falls to 0.595: medically credible material behaviour is unestablished. The atlas rig has several-millimetre radial-head/capitellum gaps. Skin, cartilage, sliding tendon wrapping, physiological force–velocity and local tissue inertia are absent.
Read equations, evidence and limitations in the book · Fixed-end recheck
The mechanical view includes gold paths and teal shared interpolation scaffolds; the comparison has the same reference tissue and bones with authored linear weights. Camera centering and offsets only separate the two views. The violet dumbbell glyph represents a point mass at the grip; its shape is schematic, and no hand mesh or external skin is present. Drag to orbit.
Loading the accepted resting receipt…
Effort and mass preserve the current state. A mass change is queued after a running solve and records external handling energy. Reset terminates the previous worker and restores the same accepted resting coordinates. Failed nonlinear, surface or tendon-path checks retain state and time. The CPU worker can take minutes per step: this is a reduced volumetric research solver, with no real-time claim.
The authored 2 mm cortex-offset guides have fixed topology and frictionless support reactions. They are not anatomical tendon wrapping or finite-radius contact. The teal guide triangles are weak edge-matrix interpolation scaffolds, not resolved solids; no solid sheet-contact claim is made. Surface and path audits cover finite poses; grazing, coplanar and continuous motion remain uncertified. Contact pressure is an authored penalty response, not measured cartilage or tissue pressure. +Z is superior and gravity uses +mgz.
Mechanical candidate: 32-point quadrature results for each head| Head | Mean fibre stretch | Minimum sampled J | Volume ratio |
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Compiled Lean4 identities
Integer algebra only; numerical state, derivative, equilibrium and anatomy checks are separate.
BodyParts3D © The Database Center for Life Science, CC BY 4.0. Retained historical OBJ notices and independent Arm26 CC BY 3.0 terms are included in the data package.