(by TailSiT)
Concha is a Rhino3D plug-in for the numerical analysis of shell structures based on the Finite Element Method.
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Concha is a Rhino3D plug-in for the numerical analysis of shell structures. Based on the Finite Element Method, Concha lets you analyse the mechanical behaviour of complex geometries subject to arbitrary loads without leaving the design environment of Rhino3D.


The key features of Concha are

  • Import of any surface-based geometry objects from within Rhino3D
  • Specification of supports at vertices, edges or surfaces 
  • Connection of vertices or surfaces from different geometry parts
  • Different material models
  • Application of forces to vertices, edges and surfaces
  • Temperature and self-weight loading
  • Automatised meshing, surface-wise meshing with non-conforming interfaces
  • Visualisation of deformed shape, displacement components, reaction forces and equivalent stresses
  • No knowledge of Grasshopper or RhinoScript is required


Download the installer (MSI for v1.1 or RHI for v2.0) and open by double-clicking. A Wizard will guide you through the installation. Make sure that the system requirements are fulfilled. Otherwise, the plug-in is likely to crash.


Concha is a plug-in for Rhino 5 SR13 and Rhino 6 for Windows (64-bit). It requires 'Microsoft .NET Framework 4.5.2' and the 'Microsoft Visual C++ Redistributable for Visual Studio 2015-2019 (64bit)'.


The free version of Concha (v2.0) has the following limitations

  • Linear analysis only
  • Reduced number of material models
  • Maximally allowed number of finite elements is 2000


For a full featured version, please go here.


v2.0.1 (2020-03-12)

  • Maintenance

v2.0.0 (2019-09-04)

  • Initial release for Rhino 6

v1.1.5 (2019-03-26)

  • Service release extending license of the free version

v1.1.4 (2018-08-17)

  • Fix serious bug in the application of forces along edges

v1.1.3 (2018-03-09)

  • Correct forces in nodal supports located on patch-interfaces

v1.1.2 (2018-02-20)

  • Maintenance
  • Renewal of public license for the free version

v1.1.1 (2017-10-13)

  • Fixed bugs in licensing module

v1.1.0 (2017-06-26)

  • Release of full featured version
  • Minor bug fixes related to post-processing

v1.0.6 (2017-06-02)

  • The displayed results are now overlays instead of clickable objects
  • Element-wise visualization of stresses selectable from ConchaSetView dialog
  • Improved visualization of reaction forces

v1.0.5 (2017-05-23)

  • Removed a bug in stress evaluation
  • Plugin now loads only if required

v1.0.4 (2017-09-05)

  • Building plugin against RhinoCommon SR13
  • Removed a bug in calculation of reaction forces
  • Removed a bug where nodal loads and constraints get lost if adjacent surfaces are added or removed
  • Fixed wrong display of nodal values for forces
  • Sign plugin with McNeel certificate and installer-files and DLLs with a trusted TAILSIT certificate
  • Correctly resolve plugin-path
  • Show mesh always in Wireframe-mode
  • Splashscreen can be turned off with ConchaSetDisplayProperties

v1.0.3 (2017-03-29)

  • Loading gets labelled with its magnitude
  • Hide model surfaces when viewing colored results
  • Show model entities when performing a selection
  • Layer tree created and destroyed depening on plug-in activity
  • Stage toolbar

v1.0.2 (2017-03-24)

  • Do not unhide hidden geometry
  • Improved analysis-settings and view dialog

v1.0.1 (2017-03-21)

  • Fixing some check-box-dependencies in the view dialog
  • Removing obsolete commands
  • Building against RhinoCommon SR12

v1.0.0 (2017-03-17)

  • Initial release