# Questions tagged [ansys]

Anything related to ANSYS, the CAE/multiphysics engineering simulation software for product design, testing and operation.

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### Problem with model constraints in ANSYS mechanical

I've been trying to run an analysis of the geometry in the attached images. The geometry consists of an inner tube with protrusions along an axis (this axis is not parallel to the Y axis) and an outer ...
6 views

### RBE duplication in Hyperworks 2022

Let's assume that I have 50 rows of elements in cone from the basement to the top. And so I need to do rbe contact between each row of elements, but I don't want to repeat the operation every time. Is ...
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20 views

### I have a question about INISTATE Code (Analyzing a curved plate)

I'm studying welding-induced residual stresses for curved steel plates. So, I need to use the INISTATE code taking initial stresses. This is the picture that I want to analyze. I divided a curved ...
36 views

### Uniform Direction for Line Directions

Despite several similar questions and my efforts, there is still no solution so far. Presently, ANSYS gives Directions to Lines on its own which are flipped even for two collinear lines. As a results ...
40 views

### Need to Align Line Directions Normals Along Specific Coord in APDL

In Preprocessor of APDL, I have built areas which are meshed with shell element and lines meshed with beam elements. I have assigned Sections to Beam elements but when I view them their cross sections ...
33 views

### Ansys Pedestrian-Induced Vibration on Bridge

I have a concrete girder box bridge that is 40 m long and 4 meters wide, and I would like to simulate the response of the bridge using Ansys random vibration for pedestrian traffic. What are ...
74 views

### Setting direction vectors for Lines in ANSYS APDL

I am using beam elements to mesh lines with "pre-meshed" shell areas. Problem is that the ANSYS sets Line Direction vectors on its own. This results in Cross sections assignment flipped from ...
58 views

### Need to Align All Line Normals to Global Direction in ANSYS APDL

I am using beam elements to mesh lines with "pre-meshed" shell areas. Problem is that the line normals are arbitrarily assigned to the lines resulting beam cross sections switched at line ...
34 views

### Understanding mesh for a cylinder

I came across this video on YouTube, and would like to know more about the mesh, such as the internal structure. Is there a reason to do it that way? Am i correct in saying there is an o-grid around ...
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26 views

### Identifying Marin Factors In Ansys For Fatigue Analysis

I am conducting a fatigue analysis for a mechanical shaft on ANSYS. Everything is fine except for defining marin factors. I am eager to specify some crucial marin factors, such as the temperature ...
17 views

### Configurating heat transfer between parts

I am new to Ansys, so sorry if I have some misunderstood parts. I am doing a Steady-state Thermal simulation of a PCB with some of its components. I am currently simulating only the highlighted ...
12 views

### Is it possible to model the connection of pre-cast and site cast concrete beam on FEA software such as Ansys?

I'm looking for a way to compare the joint strength of beam-to-column connections of pre-cast and site cast concrete. Is it possible to do this on a FEA software?
34 views

### Define material from Ogden–Holzapfel two-fiber strain-energy function in Ansys

I'm trying to do a FSI simulation with properties, described in this paper and for the structural properties, the authors use an Ogden–Holzapfel two-fiber strain-energy function to describe the solid ...
39 views

### Variable inlet velocity implementation in ANSYS Fluent

I'm trying to perform 2D analysis for a steady laminar incompressible flow through a horizontal channel with a height of H (m) and length of 2H. The boundary conditions is of the form: \$u=\frac{3}{2}...
25 views

### Not able to make enclosure in DesignModeller

I have a Fusion 360 model that I imported into ANSYS Workbench Fluent as a .step file. I want to make an enclosure around it but it is giving me an error. The error doesn't occur if I choose just any ...
45 views

### Ansys Mechanical Section Plane Error

I'm attempting to make a deformation analysis for a specific scenario in Ansys Mechanical. Everything seems to be fine, but when I try to use a section plane, the deformed region appears to be 'hollow,...
24 views

### Which boundary condition to delimit air volume body to the atmospheric environment (ANSYS)

I simulate the air flow into a cooling tank due to the temperature or density differences with the environment. I have represented the environment as an air volume body and would like to select the ...
38 views

### How to simulate thermal processes in heat pipes with Ansys

I want to simulate two heat pipelines - first pipe is supply pipe with temperature of 130°C and the other one with temperature of 70°C steady state thermal. Both carry water but under different ...
1 vote
54 views

### My ANSYS model meshing is showing problem where I don't see my model and small blue rectangle appears. Is there any way to solve this?

I'm new to ANSYS and just started using it. I encountered a problem when I click the model option; ANSYS Mechanical opens, but there is this blue rectangle, which is supposed to be big and show my ...
13 views

### Boundary condition of vibrating flange in ANSYS mechanical

I have a structure with both sides a having flange. The vibration comes to plant from one of the flanges. The structure has it's own fixed support on its bottom, bearing its weight. I assumed force is ...
65 views

### Error message in ANSYS Fluent setup

While trying to run a simulation in ANSYS Fluent, I am getting this error message : Error at Node 0: Normalized key of 26982 is out of range [0, 27030]. This error message comes when I try to run the ...
28 views

### Thermal Undershooting In SLM Simulation on Ansys Fluent

I am creating a SLM simulation of basalt on Ansys Fluent. I have enabled laminar viscosity, solidification and melting, and the energy equation. The heat flux is applied to the top wall through the ...
135 views

### Why the mode frequency is approximate in modal analysis?

I have used the Ansys workbench to carry the modal analysis of one motor stator and under the free modal analysis, the first 6 mode frequency are all zero, it is ok because of the first 6 mode does ...
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82 views

### Converting data from Chaboche material model from ABAQUS to ANSYS

How to minimize differences when using Chaboche model in ABAQUS and in ANSYS. For example as I've noticed – in ABAQUS one has rate-dependent plasticity model, but in ANSYS it is rate independent ...
76 views

### In Ansys ICEM CFD, what do these "cube" symbols on the midpoint of block edges mean?

When I was meshing a helical coil, I've noticed these "cube" symbols located at the midpoint of a the block's edges: Blocks with these symbols tend to have a lot of strange/unpredictable ...
43 views

### Preparing data for Chaboche Model in ANSYS

Can i transfer somehow my hysteresis data to ANSYS Chaboche model if the hystereses are not connected? How to properly defined it in ANSYS if I have Ramberg-Osgood prediction equation? What should I ...
56 views

### Sharp Edged Pipe with Negative Pressure

I want to calculate the 2D pipe flow with sharp edged contraction pipe (below figure). The fluid is water, the model is steady state k-epsilon. The boundary condition is velocity inlet (8.47ft/s = 2....
27 views

### Display Pressure coefficient for multiple points at across the span line of an airfoil in fluent

Learning to use ANSYS Fluent as part of my computational engineering course I have previously modelled a 2D wing and been abled to XY plot for the pressure coefficient against x coordinate. my ...
71 views

### Mesh convergence and its affect on results

Let’s say I had a mesh with 10000 nodes, then made another with 13000 nodes, why would the finer one give me slightly different results to the other even if it appears like results converged? Also, ...
663 views

### Get Node Numbers to Variable

I am using Andys APDL. I want to create Beam Element by entering Node numbers. Nodes numbers selection is through option “by location“ Then I don’t know how use them in element creation command i.e. E,...
59 views

### Employing a deforming mesh, inlet, and no shear wall in ANSYS

I am interested in running a simulation in ANSYS Fluent (or CFX, whichever is more useful) that combines the following. Update: A rotating wing in the air, similar to a turbine blade. After ...
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72 views

### How to determine time taken for tyre to deflate using CFD analysis?

I am working on my final year project, and am at a point which requires us to deflate a tyre in 0.8 seconds. This needs to be simulated using CFD. We have drilled a hole into the rim and attached a ...
4k views

### Non-Linear Analysis Convergence Problem in Ansys

I am currently conducting a static structural analysis study in Ansys and encountered convergence prolems. I have a very large thermal gradient (almost 600°C) as input from a precedent transient ...
31 views

### Is it possible to extract the prescribed boundary condition and its nodal coordinates in Ansys Mechanical?

Let's say I have 3 boundary conditions and I want to extract the nodal coordinates and the boundary condition value for each boundary condition separately. I tried Ipython scripting and pyAnsys but it ...
426 views

### Ansys Mechanical Modal analysis, Parametric materials, mode shape output for each parameter?

I am trying to match FEA results with an experiment, wherein I need to match mode shapes and frequencies. I am testing different models, and I would like to parameterize several material properties. ...
146 views

### Workbench Ansys Mesh Convergence study

Is it possible to perform a mesh study using Ansys? So I want to change the mesh size, and show the effect of this on my solutions, any suggestions?
1 vote
166 views

### Ansys Parameter Editor max characters

I am currently working with the Ansys design modeller and I have a rather complex geometry. In order to compute the required variables for my geometry, I have a very long expression inside my ...
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2k views

### Ansys SpaceClaim parameter study

i am working on my bachelor thesis and I am supposed to do a parameter study within ansys SpaceClaim. Basically I have a cross sectional geometry (on paper) and need to do the following steps: ...
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126 views

### Why am I getting an ever increasing value of power co-efficient (Cp) with the increase of TSR in Vertical axis wind turbine simulation?

I am trying to get the bell-shaped Cp vs TSR graph in my 2D simulation of the H-Darrieus vertical axis wind turbine (using a sliding mesh model). However, I am always getting an ever increase of Cp ...
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831 views

### How to automate "Clear Generated Data" and "Solve" actions in Ansys WorkBench?

Using Mechanical, there is automation and I can record the process, but what I wanted to do is that for it to first clear the generated data, then proceed with solve (whole model - two steps). It ...
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353 views

### Vacuum effect in ansys

May i define vacuum as a negative pressure in ansys? This boiler tested for vacuum of 1520mbar.
297 views

### What is meant by Solid Mesh and Surface Mesh? [closed]

Solid Mesh vs Surface Mesh, which method should I choose in simulation studies. What is the geometry behind these meshes. Which mesh gives accurate results?
70 views

### How to determine the stability of an aerodynamic shape in ANSYS Fluent

I have the aerodynamic outer mold line file of a drone. The first task of the school project is to verify that the drone is stable. First, I used the 2021R2 version of ANSYS Fluent to try to find the ...
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390 views

### Why am I seeing a moment reaction at the supports for these beams in FEM?

Please observe the Finite Element model below, in ANSYS WorkBench, (Remote force behavior = Deformable). Also, please take a lot at the force and moment reactions at the fixed supports. I couldn't ...
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1 vote
43 views

### Homogeneous magnetic field inside aperture of PCB

I need to create a homogeneous magnetic field of a certain strength across a 10mm diameter opening of a PCB by using a current track on said PCB around the opening. The signal sent through the ...
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391 views

### Why should I use a contact between two glued bodies in FEA when I can directly merge the mesh nodes between them?

So I am using ANSYS to conduct a FEA analysis. I have two options to built a connection between two bodies; first is I can use a contact (like bonded) between the touching faces and the other option ...
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1 vote
22 views

### FEA Simulation of CHASSIS [closed]

What are the most accurate methods in static state for simulation of chassis wrt 4 cases: lateral bending, torsion, head on collision and a zero turn. The problem arises when it comes to applying the ...
1 vote
201 views

### How to export 'simplified' geometry from Simulation workspace in Fusion 360 to ANSYS Mechanical?

I would like to export the defeatured version of my design to ANSYS. I tried adopting the following methods but they weren't working out. (https://forums.autodesk.com/t5/fusion-360-design-validate/...