anastruct

2D structural analysis in Python

https://github.com/ritchie46/anastruct

Science Score: 54.0%

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Low similarity (8.9%) to scientific vocabulary

Keywords

axial-forces displacement finite-element-analysis shear-forces stiffness trusses

Keywords from Contributors

interactive mesh packaging network-simulation hacking embedded optim standardization projection generic

Last synced: 6 months ago · JSON representation ·

Repository

2D structural analysis in Python

Basic Info

Host: GitHub
Owner: ritchie46
License: gpl-3.0
Language: Python
Default Branch: master
Homepage:
Size: 2.74 MB

Statistics

Stars: 404
Watchers: 30
Forks: 112
Open Issues: 37
Releases: 14

Topics

axial-forces displacement finite-element-analysis shear-forces stiffness trusses

Created over 9 years ago · Last pushed 7 months ago

Metadata Files

Readme License Citation

README.md

anaStruct 2D Frames and Trusses

PyPI - Version PyPI - Downloads Latest Release Commits since latest release

Analyse 2D Frames and trusses for slender structures. Determine the bending moments, shear forces, axial forces and displacements.

Installation

For the actively developed version: $ pip install git+https://github.com/ritchie46/anaStruct.git

Or for a release: $ pip install anastruct

Read the docs!

Documentation

Questions

Got a question? Please ask on gitter.

Includes

trusses :heavycheckmark:
beams :heavycheckmark:
moment lines :heavycheckmark:
axial force lines :heavycheckmark:
shear force lines :heavycheckmark:
displacement lines :heavycheckmark:
hinged supports :heavycheckmark:
fixed supports :heavycheckmark:
spring supports :heavycheckmark:
q-load in elements direction :heavycheckmark:
point loads in global x, y directions on nodes :heavycheckmark:
dead load :heavycheckmark:
q-loads in global y direction :heavycheckmark:
hinged elements :heavycheckmark:
rotational springs :heavycheckmark:
non-linear nodes :heavycheckmark:
geometrical non linearity :heavycheckmark:
load cases and load combinations :heavycheckmark:
generic type of section - rectangle and circle :heavycheckmark:
EU, US, UK steel section database :heavycheckmark:

Examples

```python from anastruct import SystemElements import numpy as np

ss = SystemElements() element_type = 'truss'

Create 2 towers

width = 6 span = 30 k = 5e3

create triangles

y = np.arange(1, 10) * np.pi x = np.cos(y) * width * 0.5 x -= x.min()

for length in [0, span]: xleftcolumn = np.ones(y[::2].shape) * x.min() + length xrightcolumn = np.ones(y[::2].shape[0] + 1) * x.max() + length

# add triangles
ss.add_element_grid(x + length, y, element_type=element_type)
# add vertical elements
ss.add_element_grid(x_left_column, y[::2], element_type=element_type)
ss.add_element_grid(x_right_column, np.r_[y[0], y[1::2], y[-1]], element_type=element_type)

ss.add_support_spring(
    node_id=ss.find_node_id(vertex=[x_left_column[0], y[0]]),
    translation=2,
    k=k)
ss.add_support_spring(
    node_id=ss.find_node_id(vertex=[x_right_column[0], y[0]]),
    translation=2,
    k=k)

add top girder

ss.addelementgrid([0, width, span, span + width], np.ones(4) * y.max(), EI=10e3)

Add stability elements at the bottom.

ss.addtrusselement([[0, y.min()], [width, y.min()]]) ss.addtrusselement([[span, y.min()], [span + width, y.min()]])

for el in ss.elementmap.values(): # apply wind load on elements that are vertical if np.isclose(np.sin(el.ai), 1): ss.qload( q=1, element_id=el.id, direction='x' )

ss.showstructure() ss.solve() ss.showdisplacement(factor=2) ss.showbendingmoment()

```

```python from anastruct import SystemElements

ss = SystemElements(EA=15000, EI=5000)

Add beams to the system.

ss.addelement(location=[0, 5]) ss.addelement(location=[[0, 5], [5, 5]]) ss.add_element(location=[[5, 5], [5, 0]])

Add a fixed support at node 1.

ss.addsupportfixed(node_id=1)

Add a rotational spring support at node 4.

ss.addsupportspring(node_id=4, translation=3, k=4000)

Add loads.

ss.pointload(Fx=30, nodeid=2) ss.qload(q=-10, elementid=2)

Solve

ss.solve()

Get visual results.

ss.showstructure() ss.showreactionforce() ss.showaxialforce() ss.showshearforce() ss.showbendingmoment() ss.showdisplacement() ```

Real world use case.

Non linear water accumulation analysis

Owner

Name: Ritchie Vink
Login: ritchie46
Kind: user
Location: Utrecht

Website: https://www.ritchievink.com
Repositories: 105
Profile: https://github.com/ritchie46

Author of polars | ...

Citation (CITATION.cff)

cff-version: 1.2.0
message: "If you use this software, please cite it as below."
authors:
- family-names: "Vink"
  given-names: "Ritchie"
  email: ritchie46@gmail.com
title: "anaStruct 2D Frames and Trusses"
type: software
version: 1.0.0
doi: 10.5281/zenodo.1234
date-released: 2016-08-08
repository-code: "https://github.com/ritchie46/anaStruct"
url: "https://anastruct.readthedocs.io/"

GitHub Events

Total

Create event: 32
Issues event: 10
Release event: 2
Watch event: 42
Delete event: 36
Issue comment event: 26
Push event: 30
Pull request review event: 6
Pull request event: 73
Fork event: 11

Last Year

Create event: 32
Issues event: 10
Release event: 2
Watch event: 42
Delete event: 36
Issue comment event: 26
Push event: 30
Pull request review event: 6
Pull request event: 73
Fork event: 11

Committers

Last synced: 9 months ago

All Time

Total Commits: 764
Total Committers: 17
Avg Commits per committer: 44.941
Development Distribution Score (DDS): 0.573

Past Year

Commits: 92
Committers: 4
Avg Commits per committer: 23.0
Development Distribution Score (DDS): 0.478

Top Committers

Name	Email	Commits
ritchie46	r**6@g**m	326
Brooks Smith	b**h@c**m	258
dependabot[bot]	4****]	117
vik	r**6@g**m	29
parsa	p**i@g**m	7
liamjsy	l**y@c**m	6
BehnamClearCalcs	1****s	4
unknown	b**l@g**m	4
abigailwong1	1****1	3
Nick Menz	m**k@o**m	3
Arturo Ossorio Arana	a**1@g**m	1
Dara Adib	d**b@o**u	1
Karthikeyan Singaravelan	t**i@g**m	1
LeoBelmont	5****t	1
Nicola Meoli	4****a	1
Rodrigo Rivero	r**3@g**m	1
lul	l**a@g**m	1

Committer Domains (Top 20 + Academic)

clearcalcs.com: 2 ocf.berkeley.edu: 1

Issues and Pull Requests

Last synced: 6 months ago

All Time

Total issues: 105
Total pull requests: 212
Average time to close issues: 7 months
Average time to close pull requests: 14 days
Total issue authors: 57
Total pull request authors: 16
Average comments per issue: 1.45
Average comments per pull request: 0.46
Merged pull requests: 136
Bot issues: 0
Bot pull requests: 151

Past Year

Issues: 12
Pull requests: 73
Average time to close issues: 17 days
Average time to close pull requests: 7 days
Issue authors: 7
Pull request authors: 6
Average comments per issue: 0.92
Average comments per pull request: 0.48
Merged pull requests: 26
Bot issues: 0
Bot pull requests: 64

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Top Authors

Issue Authors

ritchie46 (16)
smith120bh (8)
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thisisapple (4)
andyvwhitman (3)
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lukaszlaba (3)
kanwarjohal (2)
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tanbin-hasnat-shehab (2)
Tarang74 (2)
kjjordans (2)
johnsonmahama (2)

Pull Request Authors

dependabot[bot] (233)
smith120bh (52)
rodrigo1392 (3)
thisisapple (3)
someparsa (3)
lukaszlaba (2)
bldrkamal (2)
AsgerKrllAnd (2)
sononicola (2)
ritchie46 (2)
BehnamClearCalcs (2)
nickmenz (2)
daradib (1)
ajossorioarana (1)
LeoBelmont (1)

Top Labels

Issue Labels

bug (14) enhancement (12) question (8) dependencies (2) help wanted (1) FYI (1) github_actions (1) python (1)

Pull Request Labels

dependencies (233) python (195) github_actions (27) breaking_change (3) help wanted (1)

Packages

Total packages: 1
Total downloads:
- pypi 4,987 last-month

Total dependent packages: 1
Total dependent repositories: 7
Total versions: 24
Total maintainers: 1

pypi.org: anastruct

Finite element analysis of 2D structures

Homepage: https://github.com/ritchie46/anaStruct
Documentation: http://anastruct.readthedocs.io
License: GPL-3.0-or-later
Latest release: 1.6.1
published over 1 year ago

Versions: 24
Dependent Packages: 1
Dependent Repositories: 7
Downloads: 4,987 Last month

Rankings

Dependent packages count: 4.8%

Dependent repos count: 5.5%

Average: 5.7%

Downloads: 6.9%

Maintainers (1)

ritchie46

Last synced: 7 months ago

Dependencies

dev_requirements.txt pypi

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numpy ==1.24.2 development
scipy ==1.10.0 development

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.github/workflows/test.yaml actions

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plot_requirements.txt pypi

matplotlib ==3.6.2

requirements.txt pypi

numpy >=1.15
scipy >=1.1.0

requirements_docs.txt pypi

matplotlib *
scipy *
sphinx_autodoc_typehints *

test_requirements.txt pypi

black ==22.12.0 test
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actions/first-interaction v1 composite

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