structpy's Introduction

Structural Analysis in Python

This library primarily uses the 'Direct Stiffness Method' to solve trusses and frames.

Getting StructPy

StructPy is not currently available through pip, but will be in the future. To use StructPy you need to manually install it with the development instructions below.

Cross Sections Library:

General shapes with user defined properties
Custom shapes generated by user defined parameters
- I-Beam
- Rectangle
- Circle
- Hollow Circle
AISC predefined cross sections and properties

Material Database

A992, A36, custom, etc...

Structural Analysis Classes to build structures

Node class
Member class
Structure class
- Truss solving method and deformation plot

Development & Testing

Fork StructPy on github, and clone to your local machine with:

git clone [email protected]:{your_username}/StructPy.git

You can modify then test StructPy on your local Mac/Linux machine by running the following from the StructPy directory.

bash run_tests.sh

To install StructPy as a package run:

python3 setup.py install

References:

Structural Analysis Theory and Derivations

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structpy's Issues

Are the examples supposed to work?

Just downloaded and "bash run_tests.sh" ran ok. Tried to run "python3.8 'Truss 1.py' and got

Traceback (most recent call last):
  File "Truss 1.py", line 16, in <module>
    s1.addNode(0, 0, fixity='pin')
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/StructPy/structural_classes.py", line 138, in addNode
    node = self.__class__.NodeType(x, y, n=n, cost=cost, fixity=fixity)
AttributeError: type object 'Structure' has no attribute 'NodeType'

Poked around and in Truss1.py s1 is an instance of Structure. Grepped around and found 'NodeType' defined in a class called Truss but no reference to Truss in Truss1.py and s1 is certainly not a Truss, it's a Structure.

So I'm wondering if I am doing something wrong or if the examples are broken.

Thanks!