What’s new

Ansys 2025 R2, V2025.23 (and V2025.16)

• New context actions Create/Delete Washer Mesh for Rivets, Simplified Bolts and Advanced Bolts.
• Create and edit Manual S-N Table for use in Bolts Fatigue.
• Bugfix creating Bolt Contacts.
• Bugfix finding existing and valid Remote Points for Rivets and Simplified Bolts.
• Update on how Result Location impacts bolt utilization calculation.
• Updated Grouped Result result table listing min/max overall value and min/max value for each individual result object.
• Advanced Bolts updated to use MPC formulation if bonded always or no separation contact is used (μ = 0 or μ = 1).
• New Bolt Fatigue Load Type: Load Scanning (Zero Based).
• Support for regional characters in Bolt objects, Material Names and Named Selections.
• Support to post process Bolt Strength and Bolt Fatigue in un-converged solutions.
• Bugfix Import Bolt Configuration that contains “Bolts Fatigue” results.

Ansys 2025 R1, V2025.12

• Starting in 2025 EDRMedeso uses a cloud license provider to activate the app using a license key eliminating the need for a local license server.
• New installation files are available for Ansys versions 2025, 2024 and 2023 that includes all new features and bugfix up until now.
• Automatic Save Bolt Configuration when solving an analysis.
• Refresh Bolt Configuration for selected Analysis.
• New Group Property Bolt Configuration Source and context action “Update Group from Source”.
• Support for Mechanical Condensed Geometry workflow.
• Context action to Promote to Beam Connections for Rivets and Simplified Bolts.
• New Rivets and Simplified Bolts node scoping.
• New Rivets and Simplified Bolts behavior option “Beam”.
• Improved scoping for Rivets and Simplified Bolts to select half circles and cylinders at symmetry planes.
• Support for Rivets/Bolts on a Symmetry plane, see the instruction Simplified Bolts and Symmetry.
• New Bolt Settings options “Result Item Default” and “Calculate Time History”.
• New Rivet/Bolt Code Editor options “Default Rivet/Bolt Code”, “Material Default” and “Category Default”.
• New Bolts Pretension Type “Program Controlled” in addition to “Pretension (PRETS179)” and “Joint (MPC184)”
• New Advanced Bolts property “Bolt Name” to select bolt size from the selected Bolt Geometry File.
• New Advanced Bolts property group “Display Advanced Properties” to simplify the GUI.
• New Bolt Settings property Edit Advanced Bolts Table to edit or create Bolt Geometry Files.
• New Check Out License action and ability to add a whitelist of allowed usernames to the license.
• Improved Check License Status log messages.
• New Bolt Settings option to not check out license when starting Mechanical using “License borrowing time = 0”.
• New Simplified Bolts with Nut object to create bolts from one group of bolt holes.
• Bugfix duplicating bolt/rivet strength result resetting Result Item and Result Tolerance Factor.
• Bugfix reading an Attribute File with spaces in the name and assigning values.
• Bugfix finding and connecting Rivets from shell/solid selections.
• Bugfix using Weak Springs, Large Deflection and Material Assignment on bolt bodies together with Bolts Pretension.

Ansys 2024 R2, V242.4

• Bolts Pretension can be migrated to a “Bolts Pretension Group” similar to the “Simplified Bolts”.
• New Group Features for Rivets/Pretensions/Bolts:
  • Show Geometry/Geometry on Results/Id number/Bolt Coordinate System
  • Set the Load Colour
  • Set the Load Translucency/Result Translucency
  • Select an Attribute File property to allow for new automation features.
• Rivets and Bolts OR a Child Setup can be added in a Modal analysis if no pre-stress is used.
• New Rivets Body to Body object to create connections only between two groups.
• New Rivets, Simplified Bolts and Advanced Bolts scoping option to select faces to search for holes.
• Matching of rivet and bolt holes uses hole axis to filter out valid couplings.
• New automation context actions Convert to Edge Selection, Promote to Named Selection, Add Rivets Strength, Add Bolts Strength and Add Bolts Fatigue.
• New Result option “Result Tolerance Factor” to filter out result values.
• Rivet/bolt result evaluation properties for Plate thickness and Spacing is automatically derived when selecting a rivet/bolt object if it is undefined (zero).
• Child Setup can be used in Random Vibration or Response Spectrum analyses to display the Rivets/Bolts and to add results using the context action.
• Save/Import Bolt Configuration default path is changed to “user_files” instead of “Working Dir”, can be changed in Bolt Settings.
• New result default option “Calculate Time History = Yes (Maximum Over Time)” in Rivets Strength (and Bolts Strength) post processing to speed up compared to the old option “By = Maximum Over Time”.
• Greatly improved Rivets Strength post processing evaluation time for single steps and time history. Important Note: Models solved in versions prior to V242.2 must be re-solved to allow the new rivet post processing.
• Bugfix mapping of thermal loads to multiple rivets/bolts groups.
• Check for new version can be enabled/disabled in the Bolt Settings.
• Bugfix matching bolt head and nut geometry that caused invalid “Nut/Thread” scoping.
• Bugfix calculating Advanced Bolt pretension force.

Ansys 2024 R1, V241.4

• New Bolt Settings option “Show Bolt Coordinate System”.
• New Bolt Settings option “Load Translucency” and “Result Translucency”.
• New Bolt Settings option “Automatic Bolt Fatigue Legend” to set “Reversed Rainbow” and/or “Logarithmic” depending on Result Item “Life”, “log10(Life)” or “Safety factor stress”.
• Show bolt “Shear Force” or “Contact Slip Force” vector on Bolt Strength results.
• Bolt result csv file contains “Contact Slip Angle”, “Fs_ang” Output csv files.
• New context action on rivet and bolt objects to clear the bolt result csv file Clear Result File.
• Use Bolt Toolkit in Mechanical Stand-alone.
• Bugfix “Advanced Bolt” node merge of nut to shaft if “Nominal Diameter Length > 0”.
  Previous versions of Bolt Toolkit from version V211.1 and up can be patched using this instruction.
• New Bolt Settings option “Scale Only Pretension Change”.
• Automatic check for new versions of the app and that the app is installed in correct Ansys version.
• New Active License status button in the toolbar that replace the “Licensing” menu.
• Import Bolt Settings from selected previous version.
• Bugfix of result summary table for “Maximum/Minimum over Time” in Bolt object worksheet preview.
• Bugfix for check of custom criteria in Bolt Code Editor and save of ktv options.
• New Bolt Toolkit Tutorials.

Ansys 2023 R2, V232.8

• Advanced Bolt Thread Start Offset
• Bugfix Save Rivet/Bolt Code
• Bugfix Save Bolt Configuration
• Bolt Settings option Store Results At “Last Time Step” to speed up post processing.
• New Bolts Strength/Fatigue property “Result Location” with option to evaluate result at “Head/Mid/Thread”.
  The Result Location is also available in Child and Grouped results.
• Bolt object worksheet preview to display object details and result summary tables.
• New Bolt Settings option “Show Bolt/Rivet Geometry on Results”.
• Bugfix “Advanced Bolt” node merge of nut to shaft if “Nominal Diameter Length > 0”.
• Bugfix for check of custom criteria in Bolt Code Editor and save of ktv options.
• Bugfix post processing “Bolts to Ground”.

Ansys 2023 R1, V231.8

• New Help menu with shortcuts to the online help.
• Bolt report migrated to Report Generator.
• Bugfix “Advanced Bolts thermal mapping” (Bug appeared in V231.2).
• Bugfix “Advanced Bolts with head/nut, quadratic elements and PRETS179”.
• Bolt Settings control panel edit all preference and bolt codes.
• Bolt Strength according to AISC 360-16 now includes both the “ASD” and “LRDF” methods.
• Bugfix when evaluating Category F utilization Uf_slip for bolts without preload, Fp = 0.
• Bolt Result averaging option “Individual” (Default) or “Group” on all bolt strength results.
• A Rivet/Bolt Strength/Fatigue Child result takes the pre-selected result object as the result parent, see Child Result.
• Bugfix “Advanced Bolt” node merge of nut to shaft if “Nominal Diameter Length > 0”.
• Bugfix for check of custom criteria in Bolt Code Editor and save of ktv options.

Ansys 2023 R1, V231.2

• Advanced bolt element revolve Element Division.
• Advanced bolt Thread mesh sizing.
• Child Setup let you re-use the rivet and bolt setup from one linked parent analysis.
• Bugfix “Add bolt pretension” cause GUI to hang.
• Bugfix post processing contact results of co-axial bolts in the same group.
• Bugfix not running the solution if creating bolts fails due to missing license.
• License check in (release) license after starting a solve.
• Bolt strength according to AISC 360-16.
• Fatigue load case using Solution Combination from different analyses in the model tree.
• Fatigue load case using Solution Scanning from different analyses in the model tree.
• Cumulative Damage fatigue from grouped bolt fatigue results.
• Grouped Result to combine results (from different linked analyses) in one plot to get an overview and/or to get the max or min from several different load cases.

Ansys 2022 R2, V222.2

• Bugfix shear resistance factor, α_v, in the preference file for bolt material 6.8 and 8.8.
• Bolts Fatigue result (Normal, Structural & Shear Stress) including Eurocode 3 S-N curves.
• Packing plate thickness, t_pp, as separate property for shear resistance calculation, F_v.Rd.
• Contact Slip Radius, r_slip, property defined in bolt objects and used when post processing contact normal and slip force.
• Bugfix when app is saved with project, so local preference is not overwritten with default values.
• Bugfix for Uf_slip calculation if contact force is zero (divide by zero).
• Bugfix for “Contact slip force” and “Contact normal force” if “Auto-asymmetric” or “Program controlled” contact behavior is used.
• Bugfix if using orthotropic material data for rivets and bolts.

Ansys 2022 R1, V221.1

• Bugfix to make app work in Ansys 2020 and 2021 and to find current Ansys license for post proc.
• Bugfix for zero bolt result if no contacts are found (e.g. share topology).
• Bugfix for bolt/rivet result scale factor. (Was only used for the first evaluated result of a bolt group).
• Bugfix for rivets in solid models not coupling one of the coincident edges to the rivet shaft.
• Detect and display errors messages from post processing MAPDL process.
• Bolts/Rivets Child Result. To display different result items from a parent result.
• Insert Figures with automatic naming and renaming of existing figures/images. (This feature is moved to the Report Generator app in 2023R1.)

Ansys 2021 R2, V212.3

• Bugfix to make app work in Ansys 2020R1/R2
• License client automatic installed if needed when installing the app.
• Bolt Group Pretension scoping allows multiple faces on shaft (half cylinders).
• Current technology thermal elements.
• Bugfix to allow project path name to contain space etc.
• Improved Bolt Report result table formatting.
• Bugfix on “pretension change” result so it is updated if applied pretension is changed.
• Documentation updates.

Ansys 2021 R1, V211.1

• Bolt Group Pretension can apply material to selected bolts and be used in thermal analysis.
• Advanced bolt Element Order (Linear/Quadratic)
• Advanced bolt Nominal diameter length to set partly threaded bolt shaft.
• Updates on Increment (Embedding) to allow “Pre-adjustment” in load step 1 as well as apply Increment (Embedding) in the same load step as Load Step Lock.
• Simplified Bolts to Ground and Advanced Bolt to Ground.
• Updated graphics with bolt and rivet Id number.
• New general result items, “Pretension Change”, “Head Contact Pressure”, “Contact slip force” and “Contact normal force”.
• Updated Eurocode 3 implementation with new result items for “Utilization factor” for all checks. Code materials, criteria, etc. defined in new API in preference file.
• Automatic pretension force calculation based on selected material and code.
• Removed result item “VDI 2230” (This was only a tension check and not full evaluation)
• Automatic html Bolt Report of all rivets, bolts and results including any comments, figures and images.

Ansys 2020 R1, V201.14

• Initiate License (find and start license client)
• Check Out License (reserve license for continuous usage)
• Chick In License (release license for other usage)
• Check License Status (see available licenses and current usage)

Ansys 2020 R1, V201.13

• Sequential bolt pretension of multiple bolts.
• Custom bolt material import/export.
• Option to include/exclude material non linearities in rivets and bolt
• Create bolt pretension using MPC184 elements and joint load to allow large deformations.
• New import/export file format based on “json”.
• Rivet/Bolt results in Random Vibration and Response Spectrum.
• Scale Factor on Rivet/Bolt result.

Ansys R19.2, V192.12

• Full support for 2019 R2, new GUI. (Require that “Service Pack” is installed).
• Bugfix for thermal analysis of rivets and improvements of rivet geometry.
• Bugfix clearing old bolt results when solving on cluster.
• Preference file to control automatic creation of csv files etc.
• Create Bolt contacts: Enough with “bolt” in the name.
• Check for valid material name in case material has been renamed in Engineering Data.
• More Eurocode 3 result options for rivet and bolts (Combined, Tension and Shear).

Ansys R19.2, V192.11

• New Multi-Bolt Pretension graphics.
• Bolt Result Evaluation works (Mechanical bug in R19.0 and R19.1)
• Advanced Bolt contact morphing works (Mechanical bug in R19.0 and R19.1)

Ansys R18.2, V182.10

• Bugfix pretension section real property
• Bugfix advanced bolt element display
• Save and Import bolt configuration to/from text file.
• Bolt contact automation and contact match automation.
• Bolt head node position factor, K_head, for simplified bolts (0 ≤ K_head) Distance from contact face, D_offset = K_head·D_shaft.
• Thermal rivets and bolts to allow conduction.
• Post processing Mesh Result of rivet and bolt element results in Mechanical (Temperature, Deformation, Strain, Stress, Contact).
• New Advanced Bolt graphics.

Ansys R18.0, V180.9

• Bugfix for bolt axis calculation for some geometries.
• Additional Rivets, Simplified and Advanced bolts can be added from Bolt Toolkit menu (in addition to right click on the group).
• Advanced bolt contact settings updated for improved convergence using contact morph by default.
• Pretension Increment (embedding) to modify bolt pretension force.
• Bolt adjustment result item.

Ansys R18.0, V180.8

• Bugfix for bolt results at head and thread for cyclic symmetry.
• Bolt thread node position factor, K_thread, for simplified bolts (0 ≤ K_thread ≤ 1)
• Improved bolt hole centroid calculation for multi edge holes.
• Improved bolt position using thread axis or nut plane to position head in oversized or slotted holes

Ansys R17.0, V170.7

• Updated to run in ANSYS versions 17.0, 17.1, 17.2. and 18.0
• Create groups of rivets including results Rivets and simplified bolts can have rigid/deformable/custom behavior.
• Imported body temperatures and/or Thermal conditions will be automatically mapped to the rivets and bolts for all load steps.
• Rivet and bolt properties and result settings are included in EDRMedeso Report Generator app.
• Bug fix for material properties temperature conversion C => F and for multi linear material with only one temperature.

Ansys R17.0, V170.6

• Bolts Pretension
• Simplified Bolts
• Advanced Bolts
• Bolts Strength