Add yield moment calculation #476
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robbievanleeuwen
added
enhancement
TLCFEM
reviewed
Oct 31, 2024
| fy = group.material.yield_strength | ||
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| # loop through each element in the material group | ||
| for el in group.elements: |
Contributor
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Why not directly using the second moment of inertial and figure our the farthest fibre in each group, similar to elastic section modulus to figure out the yield moment for each group?
Looping over all elements seems to be very slow when the mesh is fine.
Reusing existing information may be beneficial here.
TLCFEM
reviewed
Oct 31, 2024
| x11, y22 = fea.principal_coordinate(phi=phi, x=x, y=y) | ||
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| # calculate bending stresses due to unit moments | ||
| sig_mxx = em * ( |
Contributor
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This part is pure numerical, can be jit-ed to improve performance.
TLCFEM
reviewed
Oct 31, 2024
| sig_m22 = -em / i22 * x11 | ||
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| # update yield indexes | ||
| yield_index["mxx"] = max(yield_index["mxx"], abs(sig_mxx / fy)) |
Contributor
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This one is minor, why not directly store: yield_moment=min(yield_moment,abs(fy/sig_m))?
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Closes #232.