def __bar_to_string(bar: StrBarSolution):
nodes_str = f'{bar.start_node.id} ➜ {bar.end_node.id}'
type_str = '⊕ TENSION' if bar.stress >= 0 else '⊖ COMPRESSION'
elongation = round(bar.elongation, __DECIMAL_POS)
strain = '{:.3e}'.format(bar.strain)
stress = round(bar.stress, __DECIMAL_POS)
return list_to_string([
f'BAR {bar.id} ({nodes_str}) : {type_str}',
f'\tΔl (elongation) = {elongation}', f'\tϵ (strain) = {strain}',
f'\tσ (stress) = {stress}\n'
])
def structure_solution_to_string(result: StructureSolution):
"""
Returns a string containing a human-readable text report of the
structure's resolution. This report includes the displacement
vector of every node, and their external reaction force. For
the case of bars, it includes the stress and strain values.
:param result: the structure's result model
:return: text report
"""
nodes_text = __nodes_to_string(result)
bars_text = __bars_to_string(result.bars)
return list_to_string(nodes_text + __SEPARATION + bars_text)
def __node_to_string(result: StructureSolution, node: StrNodeSolution):
orig_pos = node.original_pos.to_formatted_str(__DECIMAL_POS)
displacement = node.global_disp.to_formatted_str(__DECIMAL_POS)
disp_pos = node.displaced_pos.to_formatted_str(__DECIMAL_POS)
strings = [
f'NODE {node.id}', f'\toriginal position: {orig_pos}',
f'\tdisplacement: {displacement}', f'\tdisplaced position: {disp_pos}'
]
if node.is_constrained:
react = result.reaction_for_node(node)
react_str = react.to_formatted_str(__DECIMAL_POS)
strings.append(f'\treaction: {react_str}')
return list_to_string(strings) + '\n'