- Python scripting
- Panel/cylinder enhancements
- New thick-walled CPV capability and enhanced shell model in Composicad-ESAComp module
- For HyperWorks users, new workflow and improved FE post-processing features
- Updates to ESAComp Data Bank
All these new features are reflected in a comprehensive revision of our ESAComp documentation and Example Cases.
See recorded webinar: "ESAComp 4.6 - What's new?"
- Python scripting interface enables easy access to customization and extension of existing analyses. Python scripting replaces the existing CLIPS interface. (The CLIPS interface still works in v.4.6 but will be retired in the future.) Micromechanics and various failure criteria have already been re-implemented in Python. Other examples include load response/failure calculation of structural elements and the newly added laminate first-ply-failure strength in cylindrical bending.
- Batch files written in Python can be read from the graphical user interface or executed from the command line.
- Shell element based modelling of stiffeners in panel analysis has been implemented and it is the default setting. Beam element based stiffeners can still be used as well.
- Edge load types for bending and twisting (edge moments) have been added for panels.
- Automatic mesh adaptation for cylindrical shells is available. The mesh parameters are selected so that the accuracy of the analysis and the solution time are in balance.
Composicad-ESAComp Interface for Composite Pressure Vessels (CPV)
- Solid element based analysis of CPVs is a new module utilizing input from ComposicaD filament winding process simulation tool (www.composicad.com) by the Seifert and Skinner Group. ESAComp adds the structural simulation capability in the design process. The element mesh, definitions for material ID and orientation at each element and the pressure load are imported from ComposicaD to ESAComp and combined with material data from ESAComp. A solid based FE model of the structure is created, solved and post-processed in consecutive automated steps. ESAComp cylindrical shell add-on module is required for the ComposicaD interface. See also ESAComp for Pressure Vessels.
- Enhancements to shell based analysis of CPVs include selection of ranges of laminates for post processing in the 3D results viewer, allowing efficient local studies. While creating a laminate load vector for the selected element associated laminate is also created. With this approach, different laminate sections of the CPV model can be used in other ESAComp analyses. The area corresponding to the open hole is considered by defining a compensating line load at the edge of the hole. Line charts are available for the surface strains and stress for the selected range of elements. Robustness against models with missing/incorrect data has been improved.
FE Post-Processing for Altair HyperWorks
- ESAComp supports the new workflow using HyperWorks 14.130 or higher, where ESAComp export and import are directly available from the Aerospace toolbar, without having to install the ESAComp toolbar. The results can be imported and contoured using either HyperWorks matrix browser functionality or reading the HWASCII file optionally created during import. The latter is well suited for viewing ply-wise results.
- Automated post-processing for HyperWorks import files is possible by launching ESAComp from the command line with the HW output file as a parameter.
- Significant performance improvement for FE post-processing of HyperWorks imports.
- Use of ply materials from existing case instead of ply data from the CSV file created HyperWorks. Hence, the full set of material data can be used for post-processing, e.g. transverse shear strength and interlaminar shear strength.
- Global ply IDs have been introduced to ESAComp as an additional internal variable of each layer.
Data Bank Update
- Core material update including BALSA cores and FOAM cores; PEI, PES, PET, PMI, PUR, PVC and SAN.
- Laminate strength in cylindrical bending is now available under laminate strength analysis and has been implemented with Python scripting and demonstrates the type of additions that could now also be accomplished by the end-users.
- Notched strength carpet plots have been implemented as an extension of the ply carpet plots by combining with the notched laminate failure analysis.
- ANSYS APDL post-processing interface was formerly licensed as an add-on module, but is now available to all ESAComp users.
For a more detailed description of ESAComp 4.6, see the RELEASE NOTES and other documentation provided with the software installation.
Currently the Windows version of ESAComp 4.6 is available to the users while the Linux version is under finalization, release expected in mid-April.