Bolted Joint Stress Field Model
Bolted Joint Stress Field Model (BJSFM) is a common analytical method used to analyze bolted joints in composite airframe structures. This project ports the original fortran code to pure python code using the underlying theory.
from bjsfm.lekhnitskii import UnloadedHole a_inv = [[0.1, 0.05, 0.], [0.05, 0.1, 0.], [0., 0., 0.5]] # inverse a-matrix from CLPT loads = [100, 100, 50] # force / unit length plate = UnloadedHole(diameter=0.25, thickness=0.1, a_inv=a_inv, loads=loads) # get stresses at four points around hole plate.stress(x=[0.125, 0., -0.125, 0.], y=[0., 0.125, 0., -0.125]) # plot stresses from bjsfm import plotting plotting.plot_stress(plate)
pip install bjsfm
[ ] Lekhnitskii’s anisotropic elasticity solutions for loaded (cosine distribution) and unloaded holes
[ ] displacements
[X] Combined bearing and bypass 2D infinite plate stress distribution
[X] Optional DeJong tension (or compression) bearing correction
[X] Max strain analysis
This project is licensed under the MIT license.
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