hertz_pressure — DRIVE tacsim op

• Data kinds: matrix × scalar × scalar → matrix

• Call: import fullseye as fs; fs.ledger.hertz_pressure(r, a: 'float', p0: 'float') -> 'np.ndarray' (to call the implementation directly, import tacsim; tacsim.hertz_pressure(r, a: 'float', p0: 'float') -> 'np.ndarray'; from the registry, opsdrive.get("hertz_pressure"))

Usage

Hertz contact pressure p(r) = p0 √(1 − r²/a²) (r < a), 0 outside. Same shape as r. Raises ValueError: a, p0 ≤ 0.

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_tacsim_elastic_membrane — py -3.11 examples/poc_tacsim_elastic_membrane.py

• poc_tacsim_marker_shear — py -3.11 examples/poc_tacsim_marker_shear.py

• poc_tactile_dipole_torque — py -3.11 examples/poc_tactile_dipole_torque.py

Ops the type connects to (they accept matrix as input)

world_camera · lidar_scan · relative_motion · foe_from_motion · flow_from_depth_motion · ttc_truth · world_materials · mesh_signed_volume

Same category (tacsim)

combined_modulus · hertz_sphere · hertz_force · hertz_cylinder · hertz_surface_uz · membrane_indent_sphere · membrane_indent_shape · membrane_lights

*Provenance: tacsim.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.