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Questions tagged [ansys]

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

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Insufficiently constrained structural model in Ansys

I want to analyze this model that is stressed and deformed. I fixed the lowest of points in the x, y, and z directions, and I pulled top of points upward (y direction). When I run the model in Ansys I ...
Bae's user avatar
  • 121
10 votes
0 answers
1k views

ANSYS APDL Shape memory effect option of SMA not working

I am trying to define the material properties of a shape memory alloy material in ANSYS APDL V15. There are material properties for Superelastic materials (SUPE option) and material properties for ...
imacube's user avatar
  • 331
8 votes
1 answer
278 views

How to design the most hydro/aerodynamic shape for a 'vehicle' that goes back and forth (using ANSYS)?

I am interested in making a very small scraper blade that moves back and forth along a submerged surface, however I need to make it as hydrodynamic as possible so I disturb the liquid as little as ...
user88720's user avatar
  • 265
8 votes
0 answers
7k views

Residuals of continuity not converging

I'm simulating a turbine. The convergence of solution is monitored by checking the residuals of the numerically solved governing equations. The "viscous-spalarat-almaras" model is used, and used air ...
user19061's user avatar
  • 899
6 votes
1 answer
210 views

Streamlines at the boundary of rotating and stationary domains are malformed

I am simulating a turbine and have divided the mesh into domains: the piping before and after the blade and the turbine blades. The domain containing the blades rotates at 2000 rpm while the other ...
user19061's user avatar
  • 899
6 votes
0 answers
167 views

How to simulate a crack in a PCB? [closed]

I want to break this PCB with some know force of X newtons in the bottom left tip of the PCB. The problem is that in Static Dynamics I just get infinite deformation and in explicit dynamics I really ...
Gabriel Barros's user avatar
5 votes
2 answers
5k views

ANSYS Workbench/Mechanical: Automatically export chart?

I'm running a simple tensile test simulation for a single element. Under Results I made a Chart object with Stress vs Strain, which can be manually exported to a csv file by right clicking on the ...
rysciguy's user avatar
5 votes
1 answer
2k views

What is the script function to select Solid Body in ANSYS Design Modeler?

I need to select a solid body in ANSYS Design Modeler, with script, in a design with multiples bodies. With the following command I select all the solid bodies, but this is not what I need. ...
efirvida's user avatar
  • 205
5 votes
0 answers
320 views

Explicit Dynamic ANSYS - Origami structure

I am working on a flat-foldable conical structure and I would like to carry out some dynamic tests on it (deployment to get the displacements and accelerations...). I have designed the folded ...
Rixpuk's user avatar
  • 73
4 votes
1 answer
2k views

How to compare two ANSYS mechanical APDL databases? (.db or .dbb files)

I am new to using ANSYS. I use the student version. Is there a way to find what is the difference between two .db or .dbb files? I have two files say a.db and <...
Nasser's user avatar
  • 141
4 votes
2 answers
778 views

Interference fit problem in ANSYS Workbench 16.1 - how do I get rid of pressure/displacement raisers?

I have an interference fit problem of two perfect cylinders modelled in 2D using symmetry. The overall interface pressure is around 20MPa lower than the hand calculations and I get non-uniform ...
Josie Colclough's user avatar
3 votes
2 answers
15k views

How to simulate the contact between two distant parts in Ansys workbench?

I made a test in Ansys but the result doesn't seem to be the final steady state. The two bodies didn't touch each other. How can I get the right result?
landings's user avatar
  • 155
3 votes
3 answers
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 ...
hansophyx's user avatar
3 votes
1 answer
8k views

Using GPU Acceleration in ANSYS Mechanical

I am attempting to solve ANSYS mechanical (via workbench) using GPU acceleration, but I keep getting the following error: * WARNING * CP = 79.594 TIME= 15:40:08 ...
Petrichor's user avatar
  • 508
3 votes
2 answers
730 views

How can I reduce the computation time required to simulate a brain tissue penetration model?

I am trying to model the strain generated by inserting an electrode device into brain tissue. I've had some success in doing this in ANSYS Explicit Dynamics. Here's a link to a GIF showing the ...
gottahavemypops's user avatar
3 votes
1 answer
388 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 ...
Rameez Ul Haq's user avatar
3 votes
2 answers
2k views

Finding Poisson's ratio of 3D model in ANSYS

I want to find the Poisson's ratio of a 3D model, not the material but the model. How can I do this in ANSYS workbench? I am using this formula, but I can't get it to work with different models. I am ...
Niklas's user avatar
  • 145
3 votes
1 answer
858 views

How to represent a load supported at multiple points on multiple beams?

I have a frame, similar to a container frame, with two vessels inside. Each vessel is supported at four points on two beams, as shown in this mockup: I am using ANSYS to simulate the loaded frame. ...
Sysrq147's user avatar
  • 341
2 votes
2 answers
8k views

ansys workbech structural- difference between pressure and surface force application

In Ansys workbench , structural module, in modelling, what is the exact difference between pressure and surface force application? Is surface force applied in same manner as that of pressure ...
mPm's user avatar
  • 33
2 votes
1 answer
2k views

ANSYS: Why do I have a choice of choosing TOP/BOTTOM under contact/target shell faces?

When ever I try to use a surface to surface contact, i.e. 2D shell elements to 2D shell elements, under the option Contact/Target shell face, either I can pick TOP or BOTTOM. Why is that? How is that ...
Rameez Ul Haq's user avatar
2 votes
1 answer
49 views

Direct Optimisation - How to Create Time Efficient Study

I made a simulation of this cylinder that is being suspended mid air and held up by 8 rods, 4 on top and 4 on the bottom. The entire model is cooled to 15K I managed to find the forces required for 6 ...
General Stubbs's user avatar
2 votes
1 answer
2k views

ANSYS Workbench - Support type when lifting

Which type of support should I use when trying to simulate stress in structure that is lifted. Lifting is done by using four lifting lugs and chain angle is 45 degrees. What type of support to use on ...
Sysrq147's user avatar
  • 341
2 votes
0 answers
195 views

Airfoil meshing using ANSYS

Logged in a little time ago i have a new question. So I am trying to mesh an arifoil geometry using ANSYS meshing. Airfoil number is NACA 84-M profile. Running 2-D simulation my main objective is to ...
Theodosis Koutsoukos's user avatar
2 votes
0 answers
82 views

Flow rate at the vent exit

I am working on a vent. The vent is attached to a box and is designed to extract air out of the box using the venturi effect. Air is made to flow over the vent which creates a significant pressure ...
jaisingh's user avatar
2 votes
0 answers
123 views

Bolted joint junker test with finite element method

Anybody knows a tutorial to make a finite element analysis for bolted joints like junker test(fastener vibration) in Solidworks or Ansys?
Balázs Búr's user avatar
2 votes
0 answers
791 views

how to release specific degree of freedom in ANSYS Workbench?

I'm designing a truss which has 9 elements in ANSYS Workbench. since it is a truss, all of the elements are truss elements and can not tolerate momentum. I used <...
SAndroid's user avatar
2 votes
0 answers
149 views

Problem in an axial turbine

I am simulating an known as , using CFX as a solver. This turbine have 8 blades((360/8)=45 deg=pitch angle). Due to the circumferential symmetry, only one eight of the annulus has been computed, ...
user19061's user avatar
  • 899
2 votes
0 answers
353 views

unexpected bodies appear in ansys mechanical

I am using ANSYS Workbench 16.0, static structure analysis. An assembly is imported from NX 8.0. In Design Modeler, I modified some parts and regrouped them, at last there are 129 bodies, and 9 parts ...
landings's user avatar
  • 155
2 votes
1 answer
753 views

Problems with shear force diagram in beam model

I am starting to learn how to use ANSYS APDL. So I don't have much knowledge in the software. I have modelled a cantilever beam (with beam188 elements) and the only load that i have applied was the ...
Marina Vendl Craveiro's user avatar
1 vote
2 answers
9k views

Display element coordinate system using Ansys Mechcanical APDL

Is there any way to display element coordinate system in ANSYS Mechanical APDL GUI (the same way the global coordinates system is displayed)?
Sysrq147's user avatar
  • 341
1 vote
1 answer
1k views

Rayleigh damping in Finite Element Models using beta-coefficient only [closed]

I am modelling a railway track in ANSYS where the different soil layers have different material properties (including different damping ratios). Since I know what frequency of vibrations to expect in ...
AFS Rodrigues's user avatar
1 vote
2 answers
2k views

How to find the angle of deformation in Ansys APDL?

After solving my problem in APDL, and started doing some post-processing, I want to find how much the deformed shape has rotated (i.e. the maximum angle the furthest node has made comparing with the ...
AlFagera's user avatar
  • 113
1 vote
1 answer
921 views

Model Reduction - Export matrices from ANSYS to MATLAB

I am trying to reduce my model in ANSYS using Craig-Bampton Method. My ultimate goal is to read system matrices, stiffness, damping and mass matrix with MATLAB. The size of stiffness matrix that I ...
breza's user avatar
  • 11
1 vote
1 answer
3k views

Ansys Workbench - adding force in point

How to add force in certain point. I want to see influence of point force on my structure. (See image) That force is for example weight of some tank or something similar inside my structure. I don't ...
Sysrq147's user avatar
  • 341
1 vote
1 answer
2k views

How do I import an .inp and an IGES together into Ansys workbench?

I have an .inp file of Ansys that is basically a mesh, that could be imported into Ansys APDL and converting to .cdb file. But ...
FabioSpaghetti's user avatar
1 vote
1 answer
627 views

How to create RBE2 between the end edges of a cylinder and end nodes of a beam element in ANSYS APDL?

I have a cylinder with shell mesh. on its axis I have a beam with the same length of the cylinder. I want to create an RBE2 between each end edge nodes of the cylinder and the corresponding end node ...
FabioSpaghetti's user avatar
1 vote
1 answer
1k views

How to get element coordinate system information (location, angle) for each element using ANSYS Mechanical APDL

We can get local coordinate system information (location and rotation angle (in degrees) relative to the global Cartesian coordinate system.) by using ...
Banghua Zhao's user avatar
1 vote
1 answer
3k views

Ansys Workbench, defining ambient temperature correctly

this is probably a beginner's question. I have a simple solid material, lets say wood wall. I am performing transient-thermal analysis. On one side, I have elevated temperatures (after 30 minutes, I ...
blackarrow's user avatar
1 vote
1 answer
729 views

What limits my Courant number in Implicit Density based Solver?

As from the derivation we are able to see that the implicit density based solver (such as BTCS) is unconditionally stable for any courant number. So what is it, which limits the upper boundary of CFL ...
Manish's user avatar
  • 247
1 vote
0 answers
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 ...
Subarna Regmi's user avatar
1 vote
2 answers
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 ...
Finn Eggers's user avatar
1 vote
0 answers
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 ...
Swoopoo's user avatar
  • 11
1 vote
0 answers
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 ...
Yashash Rao P's user avatar
1 vote
0 answers
200 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/...
Sharath Chandar's user avatar
1 vote
0 answers
213 views

UV radiation simulation in ANSYS

I am setting up a simulation in fluent to estimate the UV radiation dosage of an air stream passing through a cylindrical duct with the UV source in line with its main axis. It is a very simple system,...
JC ME's user avatar
  • 170
1 vote
0 answers
41 views

Ansys Fluent - Turbulent model and mesh

I am currently working on a project that involves CFD simulation on ANSYS and i need some help as it has got me stuck. I am designing a faucet atomizer and it's functioning is similar to a nozzle. I ...
Siddharth Vohra's user avatar
1 vote
0 answers
432 views

How to add Beam cross section properties to imported mesh in Ansys?

Ansys Workbench 17.1 I have a mesh that was imported from Abaqus into Ansys but the beam cross section data is missing. As a result the structural model omits the beam elements. How do I access the ...
DrBwts's user avatar
  • 121
1 vote
0 answers
387 views

Ansys Fluent: how to change the temperature digit precision in writing to file XY-plot?

I want to write to file data from XY-Plot with temperature depending on the location. In Axis menu I set a max precision (9) for X and Y. However, Fluent writes data like this ...
Alexandra's user avatar
1 vote
1 answer
577 views

Debugging Ansys ACT C# Extensions

I'm using the Ansys ACT Api with C# to create an extension for Ansys (Mechanical). When developing the extension I need to build a dll file from C# code (using Visual Studio). My problem is that ...
remi's user avatar
  • 111
1 vote
0 answers
274 views

How to solve mesh error for narrow surfaces in Ansys Meshing?

I am simulating a spherical grooved bearing….e.g. A bearing that has spiral grooves on the ball. Please see the following figures. There is a kind of lubricant between ball and cup, so as to prevent ...
Am ir's user avatar
  • 11