File size: 3,770 Bytes
6de1b61 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | from __future__ import annotations
from typing import Literal
from pydantic import BaseModel, Field
MaterialName = Literal["aluminum_6061", "aluminum_7075", "pla", "petg", "steel_1018"]
FeatureType = Literal[
"rib",
"lightening_hole",
"boss",
"fillet_marker",
"hook_curve",
"clamp_jaw",
"stator_ring",
"stator_tooth",
"seat_panel",
"chair_leg",
"chair_back",
"chair_crossbar",
"decorative_curve",
"generic_panel",
"support_tube",
"curved_tube",
"flat_foot",
"armrest",
"headrest",
"tabletop",
"table_leg",
]
class Feature(BaseModel):
type: FeatureType
x: float = 0.0
y: float = 0.0
x2: float = 0.0
y2: float = 0.0
width: float = 0.0
height: float = 0.0
radius: float = 0.0
note: str = ""
class Hole(BaseModel):
x: float
y: float
radius: float
class Design(BaseModel):
title: str = "Untitled design"
rationale: str = ""
material: MaterialName = "aluminum_6061"
load_newtons: float = 120.0
load_point_x_mm: float = 90.0
load_point_y_mm: float = 0.0
base_length_mm: float = 105.0
base_width_mm: float = 44.0
base_thickness_mm: float = 4.0
fixed_holes: list[Hole] = Field(default_factory=list)
features: list[Feature] = Field(default_factory=list)
expected_failure_mode: str = ""
action_plan: list[str] = Field(default_factory=list)
class ToolAction(BaseModel):
tool: str
params: dict = Field(default_factory=dict)
class Material(BaseModel):
density_g_cm3: float
yield_mpa: float
young_mpa: float
thermal_w_mk: float
poisson: float = 0.33
MATERIALS: dict[str, Material] = {
"aluminum_6061": Material(density_g_cm3=2.70, yield_mpa=276, young_mpa=69000, thermal_w_mk=167),
"aluminum_7075": Material(density_g_cm3=2.81, yield_mpa=503, young_mpa=71700, thermal_w_mk=130),
"pla": Material(density_g_cm3=1.24, yield_mpa=55, young_mpa=3500, thermal_w_mk=0.13),
"petg": Material(density_g_cm3=1.27, yield_mpa=50, young_mpa=2100, thermal_w_mk=0.20),
"steel_1018": Material(density_g_cm3=7.87, yield_mpa=370, young_mpa=200000, thermal_w_mk=51),
}
def sample_design() -> Design:
return Design(
title="Two-rib lightweight cantilever bracket",
rationale=(
"A broad thin base keeps bolt spacing stable, two diagonal ribs move material "
"toward the bending load path, and small lightening holes reduce mass away "
"from the fixed edge."
),
material="aluminum_6061",
load_newtons=120,
load_point_x_mm=90,
load_point_y_mm=0,
base_length_mm=105,
base_width_mm=44,
base_thickness_mm=4,
fixed_holes=[Hole(x=12, y=-13, radius=3), Hole(x=12, y=13, radius=3)],
features=[
Feature(type="rib", x=16, y=-14, x2=88, y2=-4, width=5, height=18, note="lower diagonal rib"),
Feature(type="rib", x=16, y=14, x2=88, y2=4, width=5, height=18, note="upper diagonal rib"),
Feature(type="rib", x=18, y=0, x2=96, y2=0, width=4, height=12, note="center spine rib"),
Feature(type="lightening_hole", x=52, y=-13, radius=4, note="low-stress pocket"),
Feature(type="lightening_hole", x=52, y=13, radius=4, note="low-stress pocket"),
Feature(type="boss", x=92, y=0, height=7, radius=6, note="load application boss"),
],
expected_failure_mode="Bending stress at the fixed edge and rib roots.",
action_plan=[
"Search the load path",
"Add ribs along tension/compression lines",
"Remove material from low-stress regions",
"Run simulation",
"Iterate dimensions",
],
)
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