fullseye

kirsch_plate_stress — OPTICS photoelastic op

使い方

穴のある無限板の一軸引張(Kirsch の解)の σx, σy, τxy と極座標成分の閉形式 → dict。

Infinite plate with a circular hole of radius a under a remote uniaxial stress S along the direction load_angle_deg (Kirsch 1898). With θ measured from the load direction::

σrr = S/2 (1 − a²/r²) + S/2 (1 − 4a²/r² + 3a⁴/r⁴) cos 2θ
σθθ = S/2 (1 + a²/r²) − S/2 (1 + 3a⁴/r⁴) cos 2θ
τrθ = −S/2 (1 + 2a²/r² − 3a⁴/r⁴) sin 2θ

Hole edge: σrr = τrθ = 0 and σθθ = S(1 − 2 cos 2θ) — 3S at θ = 90°, −S at θ = 0°. Far away the field tends to the uniform uniaxial stress.

Returns a dict with sxx, syy, txy, srr, stt, trt [Pa] (θ of the polar components is measured from the x axis), x, y, inside (False inside the hole on the grid, stresses 0 there), pixel_m, and stress_concentration = 3.0 (max σθθ/S on the edge).

Raises ValueError: non-finite or non-positive radius / half width, a non-finite stress or angle, a hole that does not fit the grid, only one of x/y, or explicit points inside the hole.

ファミリ共通の入力契約(fail-closed)

optics の全 op は入力を検証してから計算する(黙って通さない):

詳しい使い方ガイド

参考(サンプルデータ・文献)

実行できる例(この op を実際に呼ぶ検証済みサンプル)

型が繋がる次の op(table を入力に取れる)

abcd_matrix · wavefront_stats · sfr_from_edge · paraxial_trace · seidel_coefficients · spot_stats · tolerance_analysis · wavefront_from_opd

同カテゴリ(photoelastic)

brazilian_disc_stress · principal_stress · retardation_from_birefringence · photoelastic_retardation · retardation_convert · cubic_photoelastic_birefringence · silicon_piezo_optic_coefficients · polariscope_intensity


Provenance: photoelastic.py — OPTICS operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。

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