How to model crack propagation in Ansys ?

 Ansys offers functionalities to model crack propagation through the Ansys Mechanical software and the SMART Crack Growth feature. Here's a general breakdown of the process:

1. Pre-Processing:

• Geometry and Mesh: Define the geometry of your model in Ansys Workbench. Ansys Mechanical's Unstructured Mesh Method (UMM) can automatically generate a mesh suitable for crack simulations, reducing preprocessing time [Ansys white paper on SMART Crack Growth & Fracture Modeling].
• Material Properties: Assign material properties to your model, including the fracture toughness which plays a critical role in crack growth behavior.

💥💥💥 How to communicate Ansys Fluent with Siemens Simit (possible ways) ?

 To communicate Ansys Fluent with Siemens Simit, you may need to use the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models. FMI defines a common interface for model exchange and co-simulation, which allows different simulation tools to communicate and exchange information during the simulation process¹.

One possible way to use FMI is to create a sub circuit using compatible elements in Twin Builder, and then compile a twin model out of the sub circuit. After that, you can select the twin model and export it as a twin for deployment². You can also use the command /plot/file-set/plot-to-file [filename] to export the data used in the plots into a specified file³. However, Fluent only supports co-simulation FMU, which means that it cannot export FMU files by itself⁴. You may need to use another tool that supports FMI model exchange to create FMU files from Fluent data.

You can find more information and guidance on how to use FMI and FMU files in the following web search results:

• SIMIT Getting Started - Siemens
• Connection of TCP/UDP Partners to SIMIT - Siemens
• Configuration and Commissioning of SIMIT Virtual Controller … - Siemens

Can I import output results file, for example CSV file from Ansys Fluent to Simit, without using Twin Buidler?

It seems that you want to import output results file, for example CSV file from Ansys Fluent to Simit, without using Twin Builder. According to the web search results, there are some possible ways to do that by using the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models. FMI defines a common interface for model exchange and co-simulation, which allows different simulation tools to communicate and exchange information during the simulation process¹.

One possible way to use FMI is to export the data used in the plots into a specified file by using the command /plot/file-set/plot-to-file [filename]². Then, you can use another tool that supports FMI model exchange to create FMU files from Fluent data. For example, you can use Simulink, which is a graphical environment for modeling, simulation and analysis of multi-domain systems. Simulink can import and export FMU files and perform co-simulation with other FMI-compatible tools³.

Another possible way to use FMI is to write the result of Fluent into a generic ASCII file which you can then read elsewhere⁴. Then, you can use a tool that can convert the ASCII file into an FMU file, such as FMPy, which is a Python library to simulate FMU files⁵.

You can find more information and guidance on how to use FMI and FMU files in the following web search results:

• FMU/FMI - Export a Model Exchange FMU from the AMESim & import in the Simulink Catalyst
• Ansys fluent result output file - Ansys Learning Forum
• Finding Fluent Result Output Files - Ansys Learning Forum
• Export Simulink Model to Standalone FMU
• What Is Functional Mock-up Interface (FMI)?
• FMPy: A Python Library to Simulate FMUs

Can I use Fluent with other simulation tools that support FMI?

Yes, you can use Fluent with other simulation tools that support FMI. FMI is a tool-independent standard for the exchange and co-simulation of dynamic models. FMI defines a common interface for model exchange and co-simulation, which allows different simulation tools to communicate and exchange information during the simulation process¹.

Some of the simulation tools that support FMI are:

• Simulink: Simulink is a graphical environment for modeling, simulation and analysis of multi-domain systems. Simulink can import and export FMU files and perform co-simulation with other FMI-compatible tools.
• PSIM: PSIM is a simulation software for power electronics, motor drives, and power systems. PSIM can generate FMU models and perform co-simulation with other FMI-supporting software.
• Wolfram System Modeler: Wolfram System Modeler is a Modelica-based modeling and simulation tool that supports FMI for model exchange and co-simulation. System Modeler can import and export FMU files and also integrate with other Wolfram products.

You can find more information and guidance on how to use FMI and FMU files in the following web search results:

• Tools - Functional Mock-up Interface
• FMI: Couple PSIM with any software that supports FMI co-simulation
• Export Simulink Model to Standalone FMU
• What Is Functional Mock-up Interface (FMI)?

What is the difference between FMI and FMU?

The difference between FMI and FMU is that FMI is a standard for the exchange and co-simulation of dynamic models, while FMU is a file that contains a simulation model that adheres to the FMI standard¹. FMI defines a common interface for model exchange and co-simulation, which allows different simulation tools to communicate and exchange information during the simulation process. FMU is a file that consists of an XML description file and implementation in a binary form². FMU can be imported or exported by different simulation tools that support the FMI standard. FMI and FMU are part of the same FMU standard for the purpose of system integration, which simplifies the interaction between the simulation environment and the systems models in different domains³. FMU represents the simulation model, while FMI provides a standardized communication interface between the models.

Is there possibility to create FMU file in Ansys Fluent ?

No, there is no possibility to create FMU file in Ansys Fluent. Fluent only supports co-simulation FMU, which means that it can import but not export FMU files¹. FMU files are files that contain a simulation model that adheres to the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models². If you want to create FMU files from Fluent data, you may need to use another tool that supports FMI model exchange, such as Ansys Twin Builder, Simulink, or FMPy³. You can also use the command /plot/file-set/plot-to-file [filename] to export the data used in the plots into a specified file⁴. 

What modules in Ansys Workbench have possibility to create FMU file ?

According to the web search results, it seems that there are some modules in Ansys Workbench that can create FMU files. FMU files are files that contain a simulation model that adheres to the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models¹.

Some of the modules that can create FMU files are:

• Ansys Twin Builder: Ansys Twin Builder is a platform for creating, validating and deploying digital twins. Twin Builder can import and export FMU files and also compile a twin model out of a sub circuit².
• Ansys Simplorer: Ansys Simplorer is a multi-domain system simulation software for the design of complex power electronic and electrically controlled systems. Simplorer can generate FMU files from Simplorer models and also import FMU files from other tools³.
• Ansys Mechanical: Ansys Mechanical is a finite element analysis software for structural mechanics. Mechanical can export FMU files for co-simulation with other FMI-compatible tools⁴.

You can find more information and guidance on how to use FMI and FMU files in the following web search results:

• How to export a FMI/FMU file from CFX and Fluent - Ansys Learning Forum
• Battery Thermal Management Using a Functional Mock-Up Unit - Ansys
• Parametric ROMs (Reduced-Order Models) from Fluent steady state …
• GitHub - modelica/Reference-FMUs: Functional Mock-up Units for …

How do I create an FMU file from Ansys Mechanical data?

To create an FMU file from Ansys Mechanical data, you need to use the FMI Export feature in Ansys Mechanical. FMU files are files that contain a simulation model that follows the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models¹.

The FMI Export feature allows you to export your Mechanical model as an FMU file for co-simulation with other FMI-compatible tools. You can access the FMI Export feature by right-clicking on the Solution branch in the Mechanical outline and selecting FMI Export². You can then specify the name and location of the FMU file, the FMI version, the co-simulation type, and the input and output variables. You can also select the option to include the results file in the FMU file, which will allow you to initialize the FMU with the results from the Mechanical solution³.

After you export the FMU file, you can import it into another tool that supports FMI co-simulation, such as Ansys Twin Builder, Simulink, or Open Modelica. You can then perform co-simulation between the Mechanical model and the other model, and exchange data and parameters between them. You can find more information and guidance on how to use FMI and FMU files in the following web search results:

• How to export a FMI/FMU file from CFX and Fluent - Ansys Learning Forum
• FMI Export - Ansys Help
• Exporting a Mechanical Model as an FMU - Ansys Help
• Battery Thermal Management Using a Functional Mock-Up Unit - Ansys

Can I create FMU file in Ansys CFX ?

No, you cannot create an FMU file in Ansys CFX. CFX only supports co-simulation FMU, which means that it can import but not export FMU files¹. FMU files are files that contain a simulation model that follows the Functional Mock-up Interface (FMI) standard, which is a tool-independent standard for the exchange and co-simulation of dynamic models². If you want to create an FMU file from CFX data, you may need to use another tool that supports FMI model exchange, such as Ansys Twin Builder, Simulink, or FMPy³. You can also use the command /plot/file-set/plot-to-file [filename] to export the data used in the plots into a specified file⁴. 

#12steps Video Tutorial Ansys Transient Thermal - How to define different temperatures on various elements on one geometry ?

First of all, U need to know what are APDL commands and what to use for. 

 The IC command in Ansys APDL is used to specify initial conditions at nodes for a static or transient analysis . It allows you to define the initial values of the degrees of freedom, such as displacements, rotations, temperatures, magnetic potentials, etc. The syntax of the IC command is:

IC, NODE, Lab, VALUE, VALUE2, NEND, NINC

where:

• NODE is the node at which the initial condition is applied. You can use ALL to apply to all selected nodes, P to enable graphical picking, or a component name.
• Lab is the degree-of-freedom label for which the initial condition is specified. You can use ALL to apply to all appropriate labels.
• VALUE is the initial value of the degree of freedom. It defaults to the program default for that degree of freedom (0.0 for structural analysis, TUNIF for thermal analysis, etc.).
• VALUE2 is the second-order degree of freedom value, mainly used for non-structural DOF where VELX can’t be used. It defaults to the program default for that degree of freedom (0.0 for structural analysis).
• NEND and NINC are optional arguments that specify the same initial condition values at a range of nodes from NODE to NEND (defaults to NODE), in steps of NINC (defaults to 1).

Some notes and examples of using the IC command are:

• The IC command is valid only for a static analysis and full method transient analysis (TIMINT,ON and TRNOPT,FULL). For the transient, the initial value is specified at the beginning of the first load step, that is, at time = 0.0 .
• Initial conditions should always be step applied (KBC,1) and not ramped .
• If constraints (D, DSYM, etc.) and initial conditions are applied at the same node, the constraint specification overrides .
• For thermal analyses, any TUNIF specification should be applied before the IC command; otherwise, the TUNIF specification is ignored .
• The degree-of-freedom values start from zero, or the first value given in the table when table name is specified .
• To match the nonzero initial condition value with the initial value for degree-of-freedom constraint, use a table for the degree-of-freedom constraint .
• The values are in the nodal coordinate system and in radians for rotational degrees of freedom .

For example, to apply an initial temperature of 100°C to all selected nodes, you can use:

IC, ALL, TEMP, 100

To apply an initial displacement of 0.01 m in the x-direction and an initial velocity of 5 m/s in the y-direction to node 5 and node 10, you can use:

IC, 5, UX, 0.01
IC, 5, VELY, 5
IC, 10,, , , 10

You can find more information about the IC command and other Ansys APDL commands in the Mechanical APDL Command Reference . You can also visit the Ansys Learning Forum  to ask questions and learn from other users. I hope this helps you understand the IC command better. 😊