suanPan-v3.4

What's New:

1. update Armadillo to version 12.8.2 #193
2. plane strain Duncan-Selig soil model #195
3. update Catch2 to version 3.5.4
4. update TBB to version 2021.12.0 #199
5. update MUMPS to version 5.7.1 #202

suanPan-v3.3

What's New:

1. (breaking) revise syntax for ConcreteTsai, Concrete21 and Concrete22 using a more consistent definition
2. fix tangent stiffness in ConcreteK4 model #171
3. update OpenBLAS to version 0.3.25
4. update SuperLU to version 6.0.1
5. better RCM algorithm that may result in a smaller bandwidth, thus, potentially more efficient
   solving #175
6. update Armadillo to version 12.6.7 #180
7. enable lazy evaluation and avoid temporary global matrices, faster dynamic
   analysis #183
8. bugfixes: #185
9. update Catch2 to version 3.5.2
10. update fmt to version 10.2.1
11. add nonviscous damping: NonviscousNewmark (global level integrator), ElementalNonviscous (element level
    modifier) and Nonviscous01 (material level model)

suanPan-v3.2

What's New:

1. revise uniaxial universal damage models #153
2. update OpenBLAS to version 0.3.24
3. add a new uniaxial concrete model ConcreteK4 #155
4. add beam element for arbitrary thin-/thick-walled open/close section with torsion and warping B31OS #159
5. better local iteration convergence criterion #161
6. B31OS and EB31OS associated transformations B3DOSL, B3DOSC; sections, Fibre3DOS, Cell3DOS; material wrappers OS146, OS146S
7. add elemental damping using Lee's model
8. support Lode angle in CDPM2 #163
9. add AICN cubic Newton solver #165
10. remove Bilinear2D material, use PlaneStress/PlaneStrain wrapper and BilinearJ2 3D model instead

suanPan-v3.1

What's New:

1. iterative solvers by the Lis library #145
2. update Armadillo to version 12.6.3 #149
3. add TimberPD 3D material for timber #151

suanPan-v3.0

What's New:

1. add experimental MAGMA based GPU sparse solver #123
2. add nonlinear transformation for shell elements #124
3. update VTK to version 9.2.6
4. add CustomNodeGroup #126
5. add TranslationConnector #127
6. add CustomAmplitude #129
7. update Armadillo to version 12.2 #134
8. add AsymmElastic1D #135
9. update TBB to version 2021.9.0
10. update MUMPS to version 5.6.0

suanPan-v2.9

A maintenance release focusing on performance improvement.

Non-AVX binaries are available.

What's New:

1. matrix optimsation
2. update Catch2 to version 3.3.1
3. update TBB to version 2021.8.0
4. add mixed precision algorithm for MUMPS solver #119
5. add CustomDegradation, CustomGurson and CustomGurson1D models
6. update Armadillo to version 12.0 #121

suanPan-v2.8

What's New:

1. better on screen display with the fmt library #99
2. add command overview
3. update OpenBLAS to version 0.3.21
4. add Euler buckling load check for T2D2 #104
5. speed-up analysis with visualisation recorder #102
6. update VTK to version 9.2.5
7. add Expression to support custom function definition #105
8. add CustomMises1D, CustomCC, CustomCDP, CustomDP, CustomJ2 and CustomHoffman models

suanPan-v2.7

Merry Christmas! What's New:

1. optimise assembling of symmetric global matrices #79
2. extend BatheTwoStep to allow customisation of spectral radius #81 and sub-step size #82
3. update Catch2 to version 2.13.10
4. update Armadillo to version 11.4
5. update modern Arpack #94
6. add Tchamwa #88, BatheExplicit #90 and GeneralisedAlphaExplicit #93 explicit time integration methods
7. add OALTS two-step implicit time integration method #92
8. add Sinh1D and Tanh1D nonlinear elastic 1D material
9. add linear_system flag to speed up linear system analysis

suanPan-v2.6.1

This patch mainly addresses the failure of loading plain text data, such as tabular amplitude.

What's New:

1. add -nu (--noupdate) flag to skip check of new version on startup
2. fix issue #74

suanPan-v2.6

What's New:

1. update MKL to version 2022.2.0
2. update TBB to version 2021.7.0
3. update VTK to version 9.2.2
4. add docker images and docker build scripts
5. add TabularSpline amplitude that uses cubic spline interpolation
6. add upsampling command to upsample time series data
7. add sdof_response command to compute response of single degree of freedom system
8. add response_spectrum command to compute response spectrum for given ground motion