Questions tagged [finite-element-method]
The finite-element-method tag has no summary.
308 questions
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How to model a polypropylene Infrared Weld Seam for tensile testing
I am trying to use Ansys workbench to model a weld from an infrared welder so that I can conduct a tensile FEA test on it. I have the SolidWorks files of the seam, but I am unsure how to actually ...
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How to deal with unrealistic high stress in turbine blade FEA
Every turbine blade thermo-structural analysis that I have gone through in literature and personally did the analysis in Ansys as well, have unusually high stresses, beyond any material's strength at ...
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What's the issue here with Rigit Dynamics?
I was trying to simulate my walking robot in ANSYS rigid dynamics. I made it work before with another version of the robot (Different body shape but exact same walking mechanism) and it worked. But ...
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Modelling transient 2D-Heat Transfer in Contact Surface between two Materials
I am currently working on creating a transient two-dimensional model of two materials, which I then want to calculate in Python. In particular, modeling the heat transfer due to contact between the ...
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Blade design parameters for Paper Shredder
I’m working on a small office paper shredder designed to handle 7 A4 sheets at a time for an academic project. I have a few questions about my design:
The cutting edges on my blade design are curved (...
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Simple Beam Elements, Application to Three Dimensions
On Logan's A First Course in the FEM, 6th Ed there is a derivation for a simple beam element which models bending deformation and
rotation. Notation is moment $m(x)$, shear $v(x)$,
The sign ...
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Material model choice
I'm trying to calibrate a specific material model using test data for a type of rubber(Treloar natural rubber), but unfortunately, my data is incomplete. I need more diverse loading cases (including ...
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How to import Static Analysis results into a Frequency Analysis study in SolidWorks?
I am looking for a way in SolidWorks, to import my static analysis results into a frequency analysis study, essentially creating a pre-stressed frequency analysis. However, I can't seem to find the ...
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Boundary conditions for stratified thermal storage model with variable in- and outlet positions
I am working on a stratified thermal storage model for a vertical tank and I am having trouble defining the boundary conditions for the edge cells.
All the models I could find online have the inlet at ...
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Modifying Johnson Cook Model in ABAQUS simulations
I am currently simulating a high strain rate impact of commercially pure nickel and found a constitutive equation in DOI: 10.1051/jp4:2006134015. They have a modification of the Johnson Cook model to ...
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Finite element method approximation
In the picture above, we have on the left a figure representing spatial element, and on the right a figure representing reference element.
The type of element used in the method here is a linear ...
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How to suppress longitudinal stress waves in a beam in FEA
When simulating a bending beam in FEA mimicking the textbook model and approach, unwanted stress waves appear. How to suppress longitudinal stress waves in a beam in FEA? To add friction/damping?
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Finding the best fit between Ansys model results and measurd values to optimize the parameters
I have the final element model of an experimental rig respresenting a vibrating system. The time domain results from both are known. I need to reduce the error between the results/find the best fit ...
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Why is FEA used for structural analysis?
Is there a reason for using FEA to perform structural analysis over for example Finite volume method for example?
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What is the difference between maximum principal strain and maximum in-plane principal strain?
For the purpose of answering/explaining this, it does not need to be restricted to strains (i.e., it can be stressed, too). I am mainly trying to understand when to use which one (i.e., if I am ...
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Checking if a Residual Stress Field Achieves Mechanical Equilibrium
Suppose I told you the Cauchy Stress Tensor at every point inside a chunk of metal. And, yes, I know this means that I would need to tell you about an infinite number of points - let's ignore that ...
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New to AutoCAD, trying to accomplish a simple task of trying to simulate how much force can a U channel withstand
Sorry if my question or parts of it seem vague or stupid, I'm fairly new to mechanical engineering. I'm part of a team that is building a simulator platform and I am mostly at the helm of the software ...
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Finite Element Method for Spherical Objects
I am familiar with the procedure of the FEM for simple planar objects like truss and etc. but my question would be whether it would be possible to use this method to calculate the stiffness or ...
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Is there a way to program a buckling analysis of an arbitrary shape, using a standard programming language/libraries (not Abaqus)?
I am trying to develop a program in Python that runs a few different basic analyses for optimization like minimizing compliance and buckling. I want to use machine learning to try to develop a fast (...
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Benchmarking Geometrically Exact Beams: Clarification Needed on Material Density?
In an early paper on Simo, I came across an example titled "Cantilever 45-degree bend subject to fixed and follower end load". A force of $600N$ and $300N$ was applied at the end, resulting ...
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Clarification on the location of stress and strain output value in Abaqus
Today, I had a discussion with my teacher about the location of stress and strain output in Abaqus. I believe that Abaqus outputs stress and strain based on Gauss integration points. However, my ...
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Determining the critical load of a fixed beam with non-uniform cross-section?
I am a computer scientist, not a mechanical engineer, so it is absolutely possible that I am missing some basic understanding here.
I have a beam that is fixed in both ends and my goal is to ...
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FEA of Rectangular Body Under the Effects of Combined Rotational and Translational Shear
First image is model setup. Clasp is rigidly constrained at top surface. Rectangular beam is affixed to clasp at clasp faces (locally constrained), by way of adhesive pads (second and third images).
...
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Comparison between hand calculations of a continuous beam with FEA simulation (Solidworks)
I've seen many videos and books where statically determined beams' hand calculations are checked using FEA. But why is it that FEA results don't match the ones obtained using hand calculations (in ...
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Residual Stress Induced By Shot Peening
I'm interested in the residual stress profile induced by shot peening. Most of the papers I have read do some measurement and include a graphic which looks like:
This graphic identifies how the ...
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