Hi Everyone:
I'm planning on doing a relatively basic stress analysis on some structural components. These components are going to be quickly used for both experiments and demonstration under heavy loading and impact conditions, so accuracy is very important.
One region in the structure...
Hi all:
I have a question regarding the use of FEA Software to determine damping coefficients. Basically, I want to find the damping of a skid landing gear via FEA Software, or any other readily available computational tool. I'm aware that the only physical way to determine damping would be...
Hi everyone:
I have a question regarding the use of ABAQUS to determine damping coefficients. Basically, I want to find the damping of a skid landing gear via ABAQUS. I'm aware that the only physical way to determine damping would be through an actual experiment.
However, for a given CAD...
Hi Everyone:
I am an aerospace engineering student at a top engineering university, getting a Masters degree. I was offered to stick around for a PhD, since my funding was extended. However, I'm wondering if there is an practical benefits in spending an extra 3-4 years getting a PhD, as...
Hi everyone
I have a load where both the amplitude and position change with respect to time. How do I create this load on ABAQUS, without using a subroutine. I know how to have time-varying amplitude of a load, but I do not know how to create time-varying position.
For example (this is not...
Hello
A weird problem has emerged in my model. In short, my model consists of essentially 2 hollow bars (composed of shell elements) falling to the ground. The simulation behaves as expected, until I changed the material damping.
I decided to change the material damping (specifically alpha...
Hi Everyone
I have an FEA model of rigid robotic legs impacting the ground. These legs are carrying a large weight (defined in a point node attached to the legs) and they impact the ground at a large velocity. I want to obtain a plot of the acceleration of selected points during this impact...
Hi,
I am writing parametric studies for some abaqus designs via python. Most of this has went pretty smoothly but I have reached a frustrating problem for selecting edges (from python) for a particular structure as the geometry changes. I typically use the findAt() commands and write basic...
I currently use ABAQUS 6.9. I really like the idea of the A.T.O.M. feature (Abaqus Topology Optimization Module). Does ATOM come with Abaqus 6.12, or is it an 'add-on'? Has anyone used this feature?
Thanks
Hello,
So I am running a dynamic implicit analysis. The time dependent loads are defined by a tabular amplitude. My typical procedure is:
I receive data for a time-dependent load
I input that as a tabular amplitude
I run a several dynamic implicit simulations for several different sets of...
Hello Everyone. I have been trying to evaluate a simple job but to my dismay I receive the following error message:
Normal cannot be computed in 2 elements. The nodal coordinates may be incorrect or the element aspect ratio may exceed 1000 to 1. The elements have been identified in element...
Hello Everyone
I know this is a common problem in ABAQUS (or at least it is for me). I'm trying to run an impact simulation of a basic bumper impacting a discrete rigid barrier. Clearly this is a dynamic model with surface-to-surface contact interaction. To avoid convergence problems, I...
I am planning to simulate the crashworthiness of various landing gear designs for an aircraft and I have many questions regarding the process to evaluate crashworthiness. In summary, I want to compare the performance of a couple landing gear designs with respect to crashworthiness.
Questions...
Hello, I have a question regarding parametric studies on ABAQUS. Basically, I want to vary the length of a robotic leg, and run the same model for these different leg lengths.
Previously I would run a parametric study by creating a part on ABAQUS, defining the appropriate problem...
I am trying to write a very quick python script that imports amplitude data from a .txt file at a different location. I have zero experience with python and could really use some help. Below is the (very small) python code.
# -*- coding: mbcs -*-
from part import *
from material import *...
I have a quick question. I created a complete ABAQUS model, and I am under the impression that the .jnl file that is simultaneously created with my model represents the commands to create this simulation on ABAQUS at any time - all you need to do is copy that code and paste the code into the...
I have a body on ABAQUS that translates and rotates a bit. I want to create an object that is NOT connected to the main body but displaces relative to that body. Is there any way to apply a relative displacement in ABAQUS, as opposed to the conventional absolute displacement boundary...
Hello everyone,
I want to apply loads to an object and avoid the unrealistically high stress concentrations that develop due to point loads. I was wondering what the "kinematic coupling" constraint physically does. I understand how to operate it, but I do not know if it is physically accurate...
