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Meshing Tools Automesh, refine, unrefine, extrude, revolve, sweep, merge, hollow, fit to cylinder, torispherical head, etc.
File formats LIML, STEP, STL, DXF, UNV, MSH (Gmsh), INP, ...
Post processing Animation, contour plots, deformed view, export to spreadsheet, integration, stress linearization, etc.

Linear static Nonlinear static Modal vibration Dynamic response (direct or modal) Buckling Thermal steady state or transient Acoustic resonance DC current flow
Element types







Plane yes - yes yes - - yes yes
Axisymmetric yes - - yes - - - -
Solid yes yes yes yes yes yes yes yes
Shell yes CCX* yes yes yes yes - yes
Beam yes CCX* yes yes yes - - -
Truss yes yes yes yes yes - - -
Axial spring yes yes yes yes yes - - -
Viscous damper - - - yes - - - -
Tension only yes yes - - - - - -
Fin - - - - - yes - -
Resistor - - - - - - - yes
Materials







General section shape yes yes yes yes yes yes - yes
C, T, L sections yes yes - - - yes - yes
I, bar and hollow ◽ and ◯ yes yes yes yes - yes - yes
Isotropic yes yes yes yes yes yes yes yes
Orthotropic yes CCX* yes yes CCX* yes - yes
Anisotropic yes CCX* CCX* CCX* CCX* - - -
Laminate yes - yes yes - - - -
Bilinear plastic - CCX* - - - - - -
Ramberg-Osgood plastic - CCX* - - - - - -
Neo Hooke hyperelastic - CCX* - - - - - -
Mooney-Rivlin hyperelastic - CCX* - - - - - -
First ply failure analysis yes - - yes - - - -
Temperature dependent - - - - - yes - yes
Piezoelectric yes - - - - - - -
Loads and Constraints







Fixed support yes yes yes yes yes - - -
Frictionless support yes yes yes yes yes - - -
Elastic (Winkler) support yes - yes yes yes - - -
Compression only support yes - - - - - - -
Displacement in any direction yes yes yes yes yes - - -
Node rotation about any axis yes CCX* yes yes yes - - -
Bonded contact yes CCX* yes yes yes yes yes yes
Contact - CCX* - - - - - -
Beam Flexible Joint yes - - - - - - -
Force yes yes yes yes yes - - -
Pressure yes yes yes yes yes - - -
Line pressure yes yes yes yes yes - - -
Hydrostatic pressure yes - yes yes yes - - -
Moment yes yes yes yes yes - - -
Gravity yes yes yes yes yes - - -
Centrifugal force yes yes yes - yes - - -
Mass yes - yes yes yes - - -
Rotational inertia - - yes yes - - - -
Rayleigh damping - - - yes - - - -
Thermal stress yes CCX* yes CCX* yes - - -
Temperature yes CCX* yes CCX* yes yes - -
Heat flow rate - - - - - yes - -
Internal heat generation - - - - - yes - -
Convection - - - - - yes - -
Radiation - - - - - yes - -
Electric potential yes - - - - - - yes
Electric charge yes - - - - - - -
Current - - - - - - - yes
Robin boundary condition - - - - - - - yes
Cyclic symmetry yes - yes - - yes - -
Stress stiffening - yes yes - - - - -
Constraint equations (MPCs) yes yes yes yes yes yes yes yes

*Features marked CCX* are only available when using the external CCX solver. Not all of the other features are available with the CCX solver.

CalculiX Solver (CCX)

As well as its own solver, you can use Mecway as a pre- and post-processor for the open source CalculiX CrunchiX solver (CCX). Many features of CCX are available though Mecway's interface with no need for any manual configuration, commands or keywords.

CCX is an external package written by Guido Dhondt and other authors. It is distributed under the GNU General Public License Version 2 and is not part of Mecway. However, as a convenience, the 64 bit version of CCX is included with Mecway's installer.

System Requirements

Known Bugs

This section lists known bugs that may have an impact on correctness. It does not include cosmetic or reliability bugs.

Version 7.0

Bug 11.

Bug 12. With the CCX solver, if a time dependent gravity load and another gravity load have components in the same direction then the combined gravity may be incorrect without showing an error message.

Bug 13.

Bug 14.

Bug 15. Displacement defined by a function of position on an offset shell element uses the positions of the element’s nodes rather than their offset positions to calculate the displacement.

Version 6.0

Bug 9.

Bug 10.

Bug 11.

Bug 13.

Bug 14.

Version 5.0

Bug 9.

Bug 10.

Bug 11.

Bug 13.

Bug 14.

Version 4.0

Bug 8.

Bug 9.

Bug 10. Pressure defined by a function of position on a shell face uses the position of the surface defined by the element’s nodes rather than its face. The face is typically offset by half the element thickness.

Bug 11.

Bug 13.

Bug 14.

Version 3.0

Bug 6.

Bug 7.

Bug 8.

Bug 9.

Bug 11. With the CCX solver, if a time dependent uniform normal pressure load is applied to the same element faces as another uniform normal pressure load then the combined load may be incorrect without showing an error message. The top and bottom faces of a shell element count as a single face for this purpose.

Bug 13.

Bug 14. The damping effect of the 3D Spring-damper element with the internal solver is incorrect when it’s not aligned with the global axes.

Version 2.0

Bug 4. Gravity with more than one load case is incorrectly applied to only the first load case and the force is multiplied by the number of load cases.

Bug 5.

Bug 6.

Bug 7. Compression only support in the same model as non-zero prescribed displacement causes convergence failure with a small convergence tolerance and incorrect results with a large convergence tolerance.

Bug 8.

Bug 9.

Bug 13.

Version 1.1

Bug 2.

Bug 3.

Bug 5.

Bug 6.

Bug 8.

Bug 9.

Bug 13.

Version 1.0

Bug 1. Thermal stress with orthotropic material gives incorrect displacements and stresses. Thermal stress with 2D plane strain membrane elements gives incorrect stresses. This bug does not affect isotropic shell and solid elements.

Bug 2. 2D membrane elements give incorrect Tresca stress.

Bug 3. 2D membrane elements with plane strain give incorrect von Mises stress. This bug does not affect plane stress or shell elements.

Bug 5. If a coupled DOF slave node with a coordinate system transformation also has a displacement or rotation constraint on it, then the solver may treat that constraint as being in an incorrect direction. This includes cyclic symmetry slave nodes. The error is visible in the solution's deformed view which shows the constraints being violated where it occurs. To work around this, if you are using cyclic symmetry or coupled DOF with transformations, apply any mechanical constraints to the master nodes instead of slave nodes.

Bug 6. Force loads on beam edge faces are ignored. Two workaround are to apply the force to the nodes or use line pressure instead.

Bug 8. Centrifugal force on 3D beam and truss elements that aren't parallel to the XY plane uses incorrect element mass.

Bug 9. Hydrostatic pressure on a shell face uses the position of the surface defined by the element’s nodes rather than its face. The face is typically offset by half the element thickness.

Bug 13. The Tensile Force solution variable for Spring-damper elements doesn't include the damping force.