Mismatch on geometrical non linear code coming from you guide

[sunrise125]

Hi, the following code is kept from your

Collection of examples of 2D structural analysis in Python with anaStruct framework

Open Source project by Ritchie Vink - https://github.com/ritchie46/anaStruct

but some errors arise. May I know the reason? Thanks in advance

nolin.py

from anastruct import SystemElements

ss = SystemElements(EA=15000, EI=5000) ss.add_element(location=[[0, 0], [0, 5]]) ss.add_element(location=[[0, 5], [5, 5]]) ss.add_element(location=[[5, 5], [5, 0]]) ss.add_support_hinged(node_id=1) ss.add_support_hinged(node_id=4) ss.q_load(element_id=2, q=-10) a = ss.solve(geometrical_non_linear=True, discretize_kwargs=dict(n=20)) print(*a) ss.show_structure() #EOF: nolin.py ''' C:\Training>python nolin.py Traceback (most recent call last): File "nolin.py", line 11, in a = ss.solve(geometrical_non_linear=True, discretize_kwargs=dict(n=20)) File "C:\Users\Alfabeta\AppData\Local\Programs\Python\Python38\lib\site-packages\anastruct\fem\system.py", line 6 49, in solve self.buckling_factor = system_components.solver.geometrically_non_linear( File "C:\Users\Alfabeta\AppData\Local\Programs\Python\Python38\lib\site-packages\anastruct\fem\system_components
solver.py", line 140, in geometrically_non_linear buckling_system.discretize(**discretize_kwargs) File "C:\Users\Alfabeta\AppData\Local\Programs\Python\Python38\lib\site-packages\anastruct\fem\system.py", line 1 505, in discretize ss.q_load( File "C:\Users\Alfabeta\AppData\Local\Programs\Python\Python38\lib\site-packages\anastruct\fem\system.py", line 9 24, in q_load self.plotter.max_q, max(abs(q[i][0]), abs(q[i][1])) TypeError: bad operand type for abs(): 'list' '''