I am evaluating a plug weld joint using loads from FEA.
I would like to apply the Blodgett line method, if possible. Tables 6 and 7 in Blodgett (pg 7.4-8) seem to indicate that this is permissible?
I am struggling with calculating the section properties though, since the welds are...
I have multiple perpendicular plates throughout my model that are modeled with shells that are tied together (like the web and flange of a T-beam). The tie constraint represents welds. I would like to extract forces and moments at the nodes on the interface at the location of each weld, and...
I have a model that includes several bolted joints. In this model, I have modeled the fasteners with connector elements which have the three translational stiffnesses defined (two shear, one axial).
This is a transient analysis. I am predicting failure in a minority of the bolts in two of...
I typically evaluate large steel structures subjected to severe, dynamic loads. The loading is severe enough that it is not uncommon for our analyses to predict significant plasticity.
Because the structures are large and complex, we typically use a global/local approach for evaluation of...
Apologize for the really basic question. I am modeling a strut acting between two points that has different releases on each end (fixed on one end, one moment released on the other). Do I need three connectors to represent the strut? One each to represent the releases on each end, and then a...
I created a contact interaction in CAE. Now I can't seem to edit it. Specifically, I can't edit the initial clearance, which I have set to "Uniform value across slave surface: 0". I want to remove this initial clearance. However, it is not an editable field now, for some reason. I am trying...
I am trying to use Abaqus’s “point based fasteners” to model a bolted connection which connects two large structures with 200 bolts. This is a dynamic analysis of a large structure. I can't significantly refine my mesh in way of the connection or the problem will become prohibitively...
I am attempting to run a dynamic analysis of a large composite structure. I am getting an “Exception_Access_Violation” error when I try to datacheck the model.
The error seems like it is related to a specific composite section definition that I am trying to use.
The structure is...
When I run a dynamic model with implicit time integration, I typically assume that solution time and number of DOF are correlated. The number of DOF is correlated to the size of the stiffness matrix, and factoring the stiffness matrix drives the solution time (NLGEOM=ON).
I am less familiar...
I using Abaqus/Explicit to correlate with strain gage test data for a dynamic test of a composite component. Peak strains measured in the test are ~0.005 in/in, so definitely elastic.
I am trying to understand the difference between my two options for strain output, "Nominal Strain" and...
I am trying to solve a fluid structure interaction problem using a coupled eulerian lagrangian approach. Abaqus is the Lagrangian code that simulates the behavior of the structure.
For a period of time (we'll say 0.05 sec) where the structure is not loaded, I solve only the fluid, using the...
I am trying to build a really simple model to help me understand connectors in Abaqus. Here is my model:
https://files.engineering.com/getfile.aspx?folder=e0be12ce-13b7-4f05-9ff3-0a9f13e3cdcd&file=connector.model.png
I feel dumb, but I can't figure out how to connect one end of the wire that...
Can anyone point me to a resource which explains specifically how warped quad elements affect FEM results? I have been doing some searching online, but haven't had much success finding specifics.
One powerpoint I have found seems to suggest that warped elements underestimate bending strains...
I am a mechanical an engineer with a few years of experience. Most of the work I do is transient, structural finite element analysis. I have gotten reasonably competent at building models and pumping out results, but I regularly come across gaps in my fundamental knowledge. I have been doing...
Hi,
Can I modify my Abaqus environment file such that whenever I open a CAE or an ODB, the working directory is changed to the location of the opened CAE or ODB?
Thanks,
Andrew
I would appreciate help with what seems like it is probably a pretty easy fluid mechanics problem. I need to calculate the velocity change in a pipe due to an abrupt diameter change (see attached figure). I have the velocity in the larger pipe, and need to calculate the velocity in the smaller...
I am trying to validate a dynamic implicit analysis performed in a different software package by running the same analysis in Abaqus. The other software package uses a HHT time stepping algorithm with alpha = 0 (no numerical damping). In order to perform an apples to apples comparison, I ran a...
I am running a dynamic analysis in Abaqus (implicit) that solves over ~10,000 time increments. I would like to animate the results, but would like to only include every 10 results or so to speed up the animation and reduce the file size. How do I do this? Thank you.
I am an engineer with 9 years’ experience all at a large defense contractor. My career moved in the direction of increasing technical depth until about a year and a half ago. At that point, I took on a role where I was part-time technical and part-time in an interfacing with the customer role...
I am doing a transient analysis of a rectangular plate bolted around it's four edges being loaded by a transient pressure load. The plate is about 50" X 75" X 1.0" THK. It is attached to a fixture by 75 1.0" evenly spaced fasteners. I am modeling the fasteners with beam elements. I have post...
