pycba.load.Load#

class Load(i_span)[source]#

Bases: object

Beam load container and processor

Initialize the loads from the Load Matrix

Parameters:

i_span (int) – The index of the span (or member), 1-based

Methods

H

Heaviside step function: values less than zero are clipped to zero; values greater than zero are clipped to unity; zeros are retained.

MB

Macaulay bracket: clipping values less than zero to zero.

get_cnl

get_mbr_results

get_ref

Returns the Released End Forces for a span of length L of element eType: converts the Consistent Nodal Loads of the applied loading to the correct nodal loading depending on the element type.
MB(v)[source]#

Macaulay bracket: clipping values less than zero to zero.

Parameters:

v (np.ndarray) – The vector to which the Macaulay Bracket will be applied

Return type:

ndarray

H(v, value=0.0)[source]#

Heaviside step function: values less than zero are clipped to zero; values greater than zero are clipped to unity; zeros are retained.

Parameters:

  • v (np.ndarray) – The vector to which the Heaviside function will be applied

  • value (float) – The value of the Heaviside function at zero, usually 0, but sometimes 0.5 (average of adjacent values) or 1.0.

Return type:

ndarray

get_ref(L, eType)[source]#

Returns the Released End Forces for a span of length L of element eType: converts the Consistent Nodal Loads of the applied loading to the correct nodal loading depending on the element type.

Parameters:

  • L (float) – The length of the member

  • eType (int) – The member element type

Returns:

Released End Forces for this load type: the nodal loads to be applied in the analysis, consistent with the element type.

Return type:

LoadCNL