a79a22185d
* Add Copper Alloys to Material-Metals Added a set of Copper Alloys presented in Application Data Sheet 'cda144-8-mechanical-low-temperature.pdf, Nov1974' Permission and Credit to the 'Copper Distributor's Association (CDA)' These cards follow values for 295°K Colours approximate values found by general search of images and descriptions found on the internet and use FreeCAD's appearances. * Add Copper Alloy general/generic information This additional information appears as general info not affected by anneal or cold drawn or aging factors. Information found from pages C10200, C12200, C15000, C22000, C23000, C44300, C46400, C51000, C61400, C64700, C65500, C70600, C71500, C95500 Also followed suggestions of adding tagging and description mentioned in pull request. * Add Copper Alloy source URL Added the URL for the source Application Data Sheet 'cda144-8-mechanical-low-temperature.pdf, Nov1974' This pdf is hosted by the 'Copper Distributor's Association (CDA)' Here is the source URL for this pull request in case it's needed: https://github.com/FreeCAD/FreeCAD/pull/25832 * Add Copper Alloy UltimateStrain for 102,122a,122b at 295°K 102=2.8%, 122a=39.7%, 122b=1.46% * Add Copper Alloy UltimateStrain for remaining cards 150...955 at 295°K 105=4.13%, 220=41.5%, 230=40.4%, 443=82%, 464=31.8%, 510=3.6%, 614=27% 647=9.9%, 655=10.4%, 706=28.4%, 715=39.9%, 955=10.6%. Removed spaces between IACS = nn%, so that it all stays on same line. Added C95500 compressive MPa. Added C64700 Si and IACS ranges. Also looked at 'KindOfMaterial' for Steel and made similar edits based on Table 2 info shown in brackets () to try keep a bit of consistency. * Fix Ultimate Strain Description and Units Ultimate Strain is the maximum stretch you can do to a material before it gives up. This is associated with Ultimate Tensile Strength, which is the maximum stress you can apply before the material starts to fail, elongate and eventually fracture. Units are of the type ΔL/L, such as, stretched 0.10in per 1.0in (10%), or stretched 0.15mm per 1.0mm (15%). To avoid confusion, use 0.1 or 0.15 and avoid using 10 as for 10% or 15 as with 15%, and just call it a fraction. * Add Copper Alloy Elongation, Reduction of Area, Yield Strain, Toughness Impact Charpy and Notch Tensile Strength are both considered as Toughness There is currently no use for these in FreeCAD, but maybe a future use as these are part of the Table 2 and better to add them now vs forget adding them later. The Charpy test is a fast cost-effective standardized method, and there are other more sophisticated impact tests that can be "better". There are other tests than the notch tensile strength test, but it's also a simple, fast, cost-effective method to create fracture toughness data. While adding 'Elongation' and 'Reduction of Area' both these are referred to as percentages (preferred over fraction), it seemed best to change the 'Ultimate Strain' to percentages too for consistency even though this has was referred to as fraction or percentage when searching for definitions. Added Yield Strain, probably not important now because the elastic region is pretty small, but with smart metals that can do up to 5% bends then it seems something worth adding it for that category of future metal alloys. * Add Copper Alloy Isotropic, Linear, Toughness Temperature Arrays * Add Copper Alloy Elastic & Toughness arrays and reduce model wordiness Reduced wordiness of array models by cutting-out Metal and Temperature as these are somewhat redundant words. Added remaining ElasticProperties and PlasticTriaxialProperties. * Add Copper Alloy Linear Elastic Temperature Arrays Moved Elongation and ReductionOfArea after YieldStrain/Strength and added FractureStrength so these are grouped together on the cards since they're all related (Note: Material viewer resorts these alphabetically). Linear Elastic arrays are set in the order of strain/strength for Tensile then strain/strength for Yield, and then Elongation/FractureStrength, and then ReductionOfArea. Reviewed pdf again and corrected a few errors missed/made earlier.
Your own 3D Parametric Modeler
Website • Documentation • Forum • Bug tracker • Git repository • Blog
Overview
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Freedom to build what you want FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history to change its parameters.
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Create 3D from 2D and back FreeCAD lets you sketch geometry-constrained 2D shapes and use them as a base to build other objects. It contains many components to adjust dimensions or extract design details from 3D models to create high quality production-ready drawings.
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Designed for your needs FreeCAD is designed to fit a wide range of uses including product design, mechanical engineering and architecture, whether you are a hobbyist, programmer, experienced CAD user, student or teacher.
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Cross platform FreeCAD runs on Windows, macOS and Linux operating systems.
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Underlying technology
- OpenCASCADE A powerful geometry kernel, the most important component of FreeCAD
- Coin3D library Open Inventor-compliant 3D scene representation model
- Python FreeCAD offers a broad Python API
- Qt Graphical user interface built with Qt
Installing
Precompiled packages for stable releases are available for Windows, macOS and Linux on the latest releases page.
On most Linux distributions, FreeCAD is also directly installable from the software center application.
For weekly development releases visit the releases page.
Other options are described on the wiki Download page.
Compiling
FreeCAD requires several dependencies to correctly compile for development and production builds. The following pages contain updated build instructions for their respective platforms:
Reporting Issues
To report an issue please:
- Consider posting to the Forum, Discord channel, or Reddit to verify the issue;
- Search the existing issues for potential duplicates;
- Use the most updated stable or development versions of FreeCAD;
- Post version info from
Help > About FreeCAD > Copy to clipboard; - Restart FreeCAD in safe mode
Help > Restart in safe modeand try to reproduce the issue again. If the issue is resolved it can be fixed by deleting the FreeCAD config files. - Start recording a macro
Macro > Macro recording...and repeat all steps. Stop recording after the issue occurs and upload the saved macro or copy the macro code in the issue; - Post a Step-By-Step explanation on how to recreate the issue;
- Upload an example file (FCStd as ZIP file) to demonstrate the problem;
For more details see:
Note
The FPA offers developers the opportunity to apply for a grant to work on projects of their choosing. Check jobs and funding to know more.
Usage & Getting Help
The FreeCAD wiki contains documentation on general FreeCAD usage, Python scripting, and development. View these pages for more information:
The FreeCAD forum is a great place to find help and solve specific problems when learning to use FreeCAD.
This project receives generous infrastructure support from
and KiCad Services Corp.