v1.4.0

Changes:

• Add modules for element-wise operations (ElementOperation, Stress, and Strain) (for usage, see the example examples/topology_optimization/ex_volume_stress.py)
• Add density filter based on convolution, allowing 'padded' boundary conditions and custom filtering kernels (for usage, see the example examples/topology_optimization/ex_compliance_padding_filter.py)
• Aggregation modules with active-set and approximation correction strategies
• Rework of linear solvers as a separate package in pyMOTO
• Addition of iterative solver (CG) and several preconditioners (Jacobi, SOR, geometric multigrid)
• Geometric multigrid preconditioner for solving large-scale topology optimization problems (for usage, see the new example examples/topology_optimization/ex_compliance_multigrid.py)
• Several bugfixes and minor improvements

What's Changed

• Convolution filter by @aatmdelissen in #17
• v1.4 release by @aatmdelissen in #19

Full Changelog: v1.3.0...v1.4.0

v1.3.0

New features:

• Assembly of generic Poisson type matrices (AssemblePoisson), which can be used for e.g. thermal conduction, electric permittivity
• Mass matrix assembly AssembleMass now supports other type of physics; e.g. mass, damping, thermal capacity
• Node coordinates and cartesian indices can now be obtained from DomainDefinition, respectively, by using methods get_node_position() and get_node_indices()

Examples:

• 3D thermal optimization now works! (ex_compliance.py)

What's Changed

• Element matrices by @JoranZwet in #16

Full Changelog: v1.2.1...v1.3.0

v1.2.1

Bugfixes:

• Corrected shape functions for finite element assembly

What's Changed

• Bugfixes by @JoranZwet in #15

New Contributors

• @JoranZwet made their first contribution in #15

Full Changelog: v1.2.0...v1.2.1

v1.2.0

Contributions to modules:

• Allow for additional values on DOFs in assembly (add_constant argument)
• Modules for stress calculation, vonmises stress and constraint aggregation (in ex_volume_stress.py)
• Module for enforcing symmetry (in ex_flexure.py)
• StaticCondensation module for use in kinetostatic formulation (ex_compliant_mechanism_kinetostatic.py)

New examples:

• Compliant mechanism design using springs (Sigmund formulation)
• Compliant mechanism design using kinetostatic approach (Koppen formulation)
• Volume minimization under stress constraints
• Thermo-mechanical example ex_thermo_mech.py

Bug fixes:

• Fixed sensitivity analysis of SoQ as to allow for Nonetype sensitivity input

Tests:

• More tests for SoQ (test for Nonetype input sensitivity)
• Test StaticCondensation module

Documentation:

• Added documentation to multiple existing examples

What's Changed

• Topology optimization examples by @artofscience in #9

Full Changelog: v1.1.0...v1.2.0

v1.1.0

Features:

• New module SystemOfEquations for solving a linear system of equations with constraints
• New module Scaling for proper scaling of objective functions and constraints
• New topology optimization examples for dynamic compliance, compliant mechanisms, and compliance optimization based on prescribed displacements

Bugfixes:

• Support for multiple right-hand-sides in LinSolve
• Mixed real and complex signals for EinSum

What's Changed

• Examples flexure by @artofscience in #5

New Contributors

• @artofscience made their first contribution in #5

Full Changelog: v1.0.3...v1.1.0

v1.0.3

Bugfixes:

• Several bugfixes regarding sliced signals
• Slicing signals now works correctly using a numpy array as index
• Correct finite difference when using sliced signals
• MMA arguments are directly passed

Full Changelog: v1.0.2...v1.0.3

v1.0.2

Features:

• EigenSolve now supports eigenvalues from sparse matrices
• Add module ConcatSignal that allows merging data of multiple signals into one

Other:

• Improved MMA interface
• Python version 3.7 is now supported

Full Changelog: v1.0.1...v1.0.2

v1.0.1

BugFixes:

• Correct sensitivities for complex matrices in LinSolve
• Auto-differentiation module AutoMod is corrected and tested

Renamed:

• Density to DensityFilter
• WriteToParaview to WriteToVTI

Other:

• Updated documentation and build system

Full Changelog: v1.0.0...v1.0.1

Initial release

Full Changelog: https://github.com/aatmdelissen/pyMOTO/commits/v1.0.0