H5DRM Pattern

The H5DRM pattern implements the Domain Reduction Method (DRM) using the H5DRM data format for seismic analysis.

Overview

The H5DRM pattern is used to apply seismic forces and displacements to a finite element model using data stored in the H5DRM format. It supports coordinate transformations and scaling for flexible integration with different models.

Parameters

The following table describes the parameters for the H5DRM pattern:

Parameter	Type	Description
filepath	str	Path to the H5DRM dataset (required).
factor	float	Scale factor for DRM forces and displacements (required).
crd_scale	float	Scale factor for dataset coordinates (required).
distance_tolerance	float	Tolerance for DRM point to FE mesh matching (required).
do_coordinate_transformation	int	Whether to apply coordinate transformation (0/1, required).
transform_matrix	list[float]	3x3 transformation matrix [T00, T01, T02, T10, T11, T12, T20, T21, T22] (required).
origin	list[float]	Origin location after transformation [x00, x01, x02] (required).

Usage Example

from femora.components.Pattern.patternBase import PatternManager

# Get the pattern manager instance
pattern_manager = PatternManager()

# Create an H5DRM pattern
h5drm_pattern = pattern_manager.create_pattern(
    'h5drm',
    filepath='path/to/h5drm/file',
    factor=1.0,
    crd_scale=1.0,
    distance_tolerance=0.01,
    do_coordinate_transformation=1,
    transform_matrix=[1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0],
    origin=[0.0, 0.0, 0.0]
)