sgio.read_materials_from_json

sgio.read_materials_from_json(file_path: str) → dict[str, CauchyContinuumModel]

Read multiple materials from a JSON file and return as a dictionary.

Parameters:

file_path (str) – Path to the JSON file containing a list of material dictionaries

Returns:

Dictionary with material names as keys and material model objects as values

Return type:

dict[str, CauchyContinuumModel]

Raises:

• FileNotFoundError – If the specified file does not exist

• ValueError – If the JSON is invalid, if any material has no name, or if duplicate material names are found

• TypeError – If the JSON content is not a list

Examples

>>> # JSON file: [{"name": "Steel", "isotropy": 0, "e": 200e9, "nu": 0.3},
>>> #              {"name": "Aluminum", "isotropy": 0, "e": 70e9, "nu": 0.33}]
>>> materials = read_materials_from_json("materials.json")
>>> len(materials)
2
>>> materials['Steel'].e1
200000000000.0
>>> materials['Aluminum'].e1
70000000000.0

Notes

This function now returns a dictionary to align with the name-based material storage architecture. Each material’s name field is used as the dictionary key. Duplicate names will raise a ValueError.