Engineering with Python Anton Kavalerov, Corporate Technology Unrestricted © Siemens AG 2018 Instagram: @closius ant.kavalerov@gmail.com

Unrestricted © Siemens AG 2018 Page 2 CT Russia Development world Enterprise Entertainment Science • Banks • Factories • Shopping centers • Government • Engineering centers • Accounting • … • Games • Social networks • Mobile entertainment apps • … • Institutes • Research • … external customer(s) external environment internal customer(s) internal environment

Unrestricted © Siemens AG 2018 Page 3 CT Russia Dev worlds comparison ENTERPRISE ENTERTAINMENT Architecture Legacy code Version control Developer requirements Users Problem resolving Documentation Testing Old, hard to update Fresh, easier to update Many, in different languages/styles Normal, style is taken into account Closed repositories Open/Closed repos. Open source Addition skills, narrow area of expertise Programmer skills only Specialists, experienced Ordinary people Very few info stackowerflow.com Very bad, python doc Perfect Specialists, experienced, couple of users Unit tests, special testers

Unrestricted © Siemens AG 2018 Page 4 CT Russia Task management, development process https://everhour.com/blog/best-asana-integrations/ Scrum dev process: Weekly meetings in Circuit (some sort of Skype). Developers and testers. • Everybody tells what is done for last week • Team-lead gives new tasks for a next week • Resolving problems if exist

Unrestricted © Siemens AG 2018 Page 5 CT Russia Why Python? • Simple syntax • Rapid prototyping • Big community • Many frameworks • Many integrations, bindings

Unrestricted © Siemens AG 2018 Page 6 CT Russia Engineering software PDM CAD CAE CAM Create model Analyze model Manufacture Product Data Management

Unrestricted © Siemens AG 2018 Page 7 CT Russia Where is help? https://community.plm.automation.siemens.com/t5/NX-Programming-Customization- Forum/bd-p/NX-Programming-Customization Journaling Python dock & Documentation & Examples

Unrestricted © Siemens AG 2018 Page 8 CT Russia Frameworks PyQt ctypes

Unrestricted © Siemens AG 2018 Page 9 CT Russia EXAMPLES

Unrestricted © Siemens AG 2018 Page 10 CT Russia Simple automation The algorithm for creation a triangular pattern of holes, limited by the outer and inner circles and the tolerance of these circles. For heat exchangers design

Unrestricted © Siemens AG 2018 Page 11 CT Russia Gas Turbine https://energyeducation.ca

Unrestricted © Siemens AG 2018 Page 12 CT Russia HTC tool for 3D thermal condition CAD - CFD part simple model CAE - CFD optimized mesh RESULTS - HTC for thermal–structural step Temperature Field at Steady State

Unrestricted © Siemens AG 2018 Page 13 CT Russia Design process for sophisticated 3D-models is the step- by-step process. During this process some part of model has to be changed to other variant of topology. Moreover user has to manage all reference names are included to the model. Almost each complicated 3D-modle can be split by simple parts. These parts can be once created, added to special library and reused when required. Reusable toot helps to manage this process. Technical objectives / Focused Area • All 3D-models and assemblies have been built in Siemens NX • Any design process Customer benefits • Automatic assembling of complicated 3D-model by parts from reusable library • Easy to change some parts of complicated 3D-model • Minimize time of design process Highlights and results • CAD software Siemens NX • Written in Python 3 Reusable tool and library https://aviation.stackexchange.com/questions/34378/wh ere-does-turbine-vane-and-blade-cooling-air-come-from

Unrestricted © Siemens AG 2018 Page 14 CT Russia Parameterized 3D-model is the main input for optimization calculation. One of the main problem is to create 3D-model where all combinations of parameters (with some limits for each parameter) can be build correct. This tool helps to test 3D-model and defined combinations of parameters set. Also preliminary calculation (before optimization) allows to reduce the number of optimization iterations. Technical objectives / Focused Area • All 3D-models and assemblies have been built in Siemens NX • Any optimization analysis Customer benefits • Automatic detection which parameters interrupt building process for current parameters set • Performance optimization • Minimize time & costs of design optimization steps Highlights and results • CAD software Siemens NX • Written in Python 3 The tool for testing 3D model for robust parameterization

Unrestricted © Siemens AG 2018 Page 15 CT Russia Visual representation of phase distribution in Laser Metal Deposited workpiece: Heat treatment has a strong impact on the phase composition of treated part. Modeling of phase transformation might replace resource-consuming experiments and give insight into spatial distribution of formed phases within the heat treated part. Phase Transformation Model: calculation and visualization Laser Metal Deposition (LMD)

Unrestricted © Siemens AG 2018 Page 16 CT Russia Continuous Cooling Transformation (CCT) phase diagram 1% of austenite has turned into martensite 90% of austenite has turned into martensite Raw data recognition Mathematic Application (Temperatures / Phase fraction %)

Unrestricted © Siemens AG 2018 Page 17 CT Russia Data translation from Ansys into Python ANSYS result file (.rth ) Fortran ( .exe ) .rth => .bin Python .bin => calculation

Unrestricted © Siemens AG 2018 Page 18 CT Russia Sample Design Rule: Trapped Support Test case: Internal chamber of atomizer Areas with trapped supports Input: • Areas in need of support (single or a list of areas) • SLM build orientation (vector) Output: • Surfaces which need supports should be highlighted in green • Surfaces with trapped supports should be highlighted in red The preparation of 3D-model for 3D printing is sophisticated process. There are some design rules (min diameter of holes, min fillet, areas to be supported, …) that have to be taking into account. One of design rules is “finding trapped supports”. Trapped supports are supports that are enclosed either completely or partially within desirable geometry such that they cannot be removed by post processes. The script has to highlight the areas of part, which require supports during additive manufacturing process, as well as highlight surfaces for which support can be trapped.

Unrestricted © Siemens AG 2018 Page 19 CT Russia Drone inspection

Unrestricted © Siemens AG 2018 Page 20 CT Russia How to develop you skills? https://pythonworld.ru/ Invent your project Implement and finish https://www.youtube.com/user/sentdex https://pythonprogramming.net

Unrestricted © Siemens AG 2018 Page 21 CT Russia Contact information Anton Kavalerov “Siemens” LLC, Corporate Technology 115093, Russia, Moscow, Dubininskaya st., 96, room 409 Tel.: +7-968-793 2175 anton.kavalerov@siemens.com