P-Delta Analysis Control

A nested class within AnalysisControl used to create P-Delta analysis control for geometric nonlinear analysis.

Constructor

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AnalysisControl.PDelta(iter = 5, tol = 0.00001, load_case_data = None)

Creates P-Delta analysis control settings for geometric nonlinear analysis.

Parameters

• iter (default=5): Number of Iterations (required)
• tol (default=0.00001): Convergence Tolerance (required)
• load_case_data: Load Cases with Scale Factors (required)
• List of load cases and their corresponding scale factors for P-Delta analysis
• Format: [["LC1", factor1], ["LC2", factor2], ...]

Object Attributes

• ID (int): The ID of the P-Delta control entry (always 1).
• ITER (int): Number of iterations for P-Delta analysis.
• TOL (float): Convergence tolerance for P-Delta analysis.
• LOAD_CASE_DATA (list): Load cases with their scale factors.

Examples

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# Basic P-Delta analysis with single load case
AnalysisControl.PDelta(
    iter=5,
    tol=0.00001,
    load_case_data=[["DL", 1.0]]
)

# P-Delta analysis with multiple load cases

AnalysisControl.PDelta(
    iter=15,
    tol=0.0000001,
    load_case_data=[
        ["DL", 1.0],
        ["LL", 0.75]
    ]
)