MARS software suite

MARS software suite

MARS is our first software product, born out of the desire to relieve mechanical engineers of menial tasks and allow their mind to concentrate on what really matters: DESIGN & INNOVATION.

Currently it contains one module dedicated to the verification of fasteners and associated margins of safety: Bolt Static Analysis.

Our plan is to expand it with further modules for analysis of isolators, rivets, inserts, bonded joints and bearings.

The MARS suite is driven by the most anticipated needs of the space industry – efficiency, flexibility, optimisation and reliability.

Interested in a demo?

Take control of the engineering verifications and reporting and focus on key design parameters which have an impact on the system performance, through a superior software tool developed to assist space industry engineers with the system verification and optimisation process.

MARS’ user-friendly interface allows for an effortless definition of analysis settings required to perform the Margins of Safety verification.

It includes two levels of analysis for threaded fastener joint verification: comprehensive and simplified. Its capability of handling multiple bolt groups reduces the effort of doing or repeating unnecessary tasks which often leads to time wasted, human errors and menial boring tasks.

Reporting of Margin of Safety results is simple – direct word format reports readily made available to be appended to your main technical reports. Many other exciting capabilities to be included in the future versions.

We want to support your efforts in any way we can. So if you find that MARS does not have all the features that you need, please get in touch. We are more than happy to work with you to add those features.

Main features

Database of components (bolts, nuts, washers) and materials

Choose predefined standard components and materials for your setup or define your own. You can save newly defined components and materials to the database, for future use

Simplified & Comprehensive analysis modes to suit different needs

Simplified ➤ reports margins of safety for critical failure types associated only with the bolt in a jointed assembly

Comprehensive ➤ reports margins of safety for critical failure types associated with all elements (bolt, clamped parts, bolt & counterpart threads, washer, helicoil) in a jointed assembly

Import mechanical loads data from Nastran (.PCH, .F06) and CSV files

For PCH and F06 files you can select which subcases to be imported. Support for other file types can be added upon request

Manipulate imported mechanical loads data directly in software

Manually edit the values or scale the entire dataset by a certain factor. You can then export the loads data to a CSV file

Import bolt groups or update element IDs from element information file generated by Siemens NX

When building your model in Siemens NX, bolt group and element ID data can be exported to file after a change to the CAD model. This file can be imported in MARS, to update the analysis settings. Support for similar files generated by other CAD software can be added upon request

Save all settings to a single file

The file includes all your settings together with any mechanical loads data that you imported. This can easily be stored and shared with colleagues, to reproduce the analysis report

Report generated in special HTML format which can be fully imported by Microsoft Word

Open your HTML analysis report in a web browser for quick visualization or open it with Microsoft Word to copy sections from it or to save it in DOCX format. Report headings, table formatting, links etc will be preserved exactly as displayed in the web browser

The Bolt Static Analysis module has 3 sections for specifying input data:

Bolt grous
Define unlimited bolt groups together with the setting for each group
Bolt grous
Import mechanical loads data from Nastran (.PCH, .F06) or CSV files (+ other file types, upon request)
Bolt grous
Define safety factors applicable for the current analysis

Analysis settings

Simplified & Comprehensive analysis modes to suit different needs

Simplified

Evaluate the margins of safety for critical failure types associated with the bolt in a jointed assembly. The analysis is based on simplified input settings and only the bolt margins of safety are provided in the report.

1

Either specify the bolt properties

Bolt geometry and material are specified for each bolt group. You can either choose a predefined standard bolt and material or define your own and then save them for future use
2

Or directly specify the bolt preload and tensile strength to be used in the calculations

This allows the usage of experimental results rather than theoretical values calculated based on the bolt properties

Comprehensive

Evaluate the margins of safety for critical failure types associated with all elements (bolt, clamped parts, bolt & counterpart threads, washer, helicoil) in a jointed assembly.
The analysis is based on comprehensive input settings and the margins of safety for all elements are provided in the report.

1

Define an unlimited number of bolt groups

When building your model in Siemens NX, bolt group and element ID data can be exported to file after a change to the CAD model. This file can be imported in MARS, to automatically update the analysis settings. Support for similar files generated by other CAD software can be added upon request
2

Define bolt properties

Bolt geometry and material are specified for each bolt group. You can either choose a predefined standard bolt and material or define your own and then save them for future use
3

Define counterpart either as separate nut or threaded insert (in the last plate of the stack) with or without helicoil

Counterpart type, geometry and material are specified for each bolt group. You can either choose a predefined standard nut and material or define your own and then save them for future use
4

Define washer properties

Washer geometry and material are specified for each bolt group. You can either choose a predefined standard washer and material or define your own and then save them for future use
5

Define placement of washer(s)

The following washer setups can be specified: no washers, only under bolt head, only under nut, both under bolt head and under nut
6

Define an unlimited number of plates

Plate thickness and material are specified for each bolt group. You can either choose a predefined standard material or define your own and then save it for future use

Bolt settings specification

Example of how specification of bolt settings is made. Counterparts, washers and plates are specified in a similar fashion

1

Select a predefined bolt from the database or manually input dimensions in the fields below

When a new bolt is defined it can be saved in the database for future use
2

Select a predefined bolt material from database or manually input properties in the fields below

When a new material is defined it can be saved in the database for future use

Importing loads data

1

Import mechanical loads data from Nastran (.PCH, .F06) and CSV files

For PCH and F06 files you can select which subcases to be imported. Support for other file types can be added upon request
2

Manipulate imported mechanical loads data directly in software

Manually edit the values or scale the entire dataset by a certain factor. You can then export the loads data to a CSV file

Safety factors specification

Incorporate in your analysis the safety factors recommended by the ECSS standard

Simplified

Comprehensive

Analysis report

Report generated in special HTML format which can be fully imported by Microsoft Word. Open your HTML analysis report in a web browser for quick visualization or open it with Microsoft Word to copy sections from it or to save it in DOCX format. Report headings, table formatting, links etc will be preserved exactly as displayed in the web browser.

Report

opened in Web Browser

Report

opened in MS Word