v1.1.0

AsapOptim v1.1.0

Diff since v1.0.0

v1.0.0

AsapOptim v1.0.0

Diff since v0.1.3

This is a major release to a Version 1.0 of AsapOptim, consisting of a in-depth redesign of the package to match the new architecture of Asap v.1.+. In short, we have now have extreme flexibility in the choice of backend, and over 100x speed improvements for large, constrained optimization problems.

Highlights

• Like TrussModel and Model being merged into a single data structure, optimization parameters are merged into a single OptParams structure.
• Type strictness is replaced in favour of parametricism, enabling the use of all popular AD backends (Zygote, Enzyme, Mooncake, ForwardDiff).
• The majority of hand-written differentiation rules using ChainRulesCore are now redundant, and the few remaining adjoint definitions are placed as package extensions in Asap, resulting in a significant lightweighting and robustness of this repository.
• Significant testing and comparison was performed to ensure correctness with known analytic gradients and matches to published work.
• ForwardDiff becomes the AD engine of choice for any problem with large constraints. Testing shows that a combination of reverse-mode for objectives and forward-mode for constraints yields the fastest iterations. a CachedSolver data structure enables efficient reuse of known values during both forward and reverse passes.

Breaking Changes

This is a clean break from v0.1.x, tracking Asap's own v1.0 break. The legacy implementation is preserved (unloaded) in legacy_v0/ for reference. Requires Asap ≥ 1.1; ForwardDiff is now a direct dependency.

v0.1.x	v1.0
TrussOptParams / FrameOptParams (separate types, separate pipelines)	one OptParams (the old names still work as aliases)
TrussVariable element type	AbstractVariable
SpatialVariable(node, vector, val, lb, ub) directional "rail"	axis form only: SpatialVariable(node, val, lb, ub, :X/:Y/:Z)
res.U with 3 DOFs/node (U[2:3:end] vertical)	full 6 DOFs/node — y-displacements U[2:6:end], z U[3:6:end]
res.X, res.Y, res.Z vectors	res.X is a 3 × n matrix
res.K, res.R (element stiffness/transformation matrices)	gone — pure results only (U, X, A, L, sections, EA)
params.P load vector	params.F (or just compliance(res, params))
GeometricProperties with X/Y/Z/evecs	X (3 × n), L, A
NetworkResults	NetworkOptResults (Asap owns the NetworkResults name)
hand-written rrules throughout	none — Asap's rule extension covers everything

See example files, and docs/releases/v1.0.0.md for more details.

v0.1.3

AsapOptim v0.1.3

Diff since v0.1.2

v0.1.2

AsapOptim v0.1.2

Diff since v0.1.1

v0.1.1

AsapOptim v0.1.1

Fixes

• Indexer for SpatialVariables now reference the correct directional factors fx, fy, fz when populating variable data.

v0.1.0

AsapOptim v0.1.0

Merged pull requests:

• Update README.md (#1) (@keithjlee)
• Create LICENSE (#2) (@keithjlee)

AsapOptim: General structural optimization

Initial release of AsapOptim.