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Questions related from Paritosh Hebbal
Hello everyone, I am thinking how the function should look like in order to generate this kind of curve shown below. I am guessing the variables should be : the radius that increases by "x"...
09 September 2019 5,459 3 View
Hello everyone, In Abaqus, my model uses shell elements. After the simulation when I try to compare the principal stresses, there are 4 possibilities : 1. Max In-plane Principal 2. Max...
09 September 2018 5,661 3 View
Hello everyone, In my model (predominantly rubber), I get a maximum strain of around 15% compared to the initial state. I have experimental data for the rubber compound I am using, and I want to...
08 August 2018 3,240 3 View
Hello everyone, I would like to know how to view the beam section forces in the axial direction of the beam. I have selected SF in the output field variables, and am not sure if SF1 means axial...
07 July 2018 1,568 2 View
I mean to ask, is it right to say that a solid element behaves exactly like a beam element, given the same cross section, simply supported boundary conditions etc? I am talkingin terms of...
06 June 2018 2,382 0 View
Hello everyone, Does anyone have any experience/insight on RVEs where the fibers interlock, thus causing some contact to occur between the fibers of the matrix? Please do let me know whatever...
06 June 2018 4,901 2 View
Hello Abaqus users, I am looking for the best way to model a yarn-knitted reinforced rubber hose in Abaqus, in order to measure the expansion and burst pressure. I have modeled the 3D geometry...
06 June 2018 3,996 0 View
Between and Elastic-Isotropic model with a low young's modulus, and a Hyperelastic Material that fits best with experimental data, what model (overall) gives relatively good results with less...
06 June 2018 1,081 3 View
Hello everyone, I have a cylindrical (non-uniform) model as shown in in the figure. I would like to assign the orientation such that : Z-axis = normal to the surface X-axis = along the radial...
06 June 2018 2,816 3 View
I have searched on google and in the abaqus manual, but there is very little information on this topic. I would love to see some example subroutines.
06 June 2018 4,595 17 View
Hello, My model consists of two parts, where an inner geometry made of C3D8 solid elements is embedded inside an outer cube which is also meshed with solid elements. The constraint given is...
05 May 2018 5,049 3 View
Hello Everyone, I have the effective properties of a material (E1, E2.. v12, etc) as a function of the strain (epsilon11, epsilon22, epsilon12) as shown in the figure. I want to apply these...
05 May 2018 8,067 3 View
Hello everyone, My model contains strain-controlled displacement, and I would like to obtain/compute the stiffness matrix for different strain combinations. Ex: Case 1) e11=1, e22, e33, e12...
05 May 2018 5,191 3 View
Hello everyone, I plan to create a GUI in python (or any suggested tool) which essentially reads a huge collection of data from a CSV table, so that when the user selects a certain combination of...
05 May 2018 3,481 3 View
Hey guys, I have a RVE (representative volume element) where the matrix is rubber (highly nonlinear). I want to run my analysis with the NLGEOM option ON. What I want to understand is, after...
05 May 2018 2,748 2 View
Hello, I am modeling a yarn-knitted reinforced rubber hose in Abaqus, in order to measure the expansion and burst pressure. As seen in my model, I have used BEAM section for the aramid cords,...
05 May 2018 6,514 1 View
Hello everyone, I plan to model a knitted reinforcement within a rubber hose in Abaqus in order to analyse the various stresses sustained by them during hose expansion. I am wondering whether to...
05 May 2018 6,331 8 View
I have imported this model from a CAD program. I am having difficulty meshing it. I would really love any suggestions as to how I can go about achieving the following : 1. The model is symmetric...
04 April 2018 3,303 3 View
I am in a sticky situation. I have been given a UMAT which describes a material in abaqus. I am fairly new to it, but the problem is that the UMAT has been written by at least 4 people, over a...
04 April 2018 5,664 3 View
I am using a plugin which calculates nodes based on a tolerance value. The tolerance values are inputted through a python script that I have added at the PYTHONPATH (Abaqus Working Folder,...
04 April 2018 4,130 1 View
During the course of my analysis, my model expands in one direction (XX) and contracts in the other (YY). I want to simply measure the "expansion/contraction" of my model in XX and YY directions...
03 March 2018 2,044 2 View
My load condition is a pressure of 4 bar on the surface of a part. I want the results at each bar increment of pressure. (1, 2, 3, 4 bar) I have written a python code to capture the nodal...
03 March 2018 10,293 4 View
(See figure) I sometimes see regions in my model that are colored grey in the contour legend. I am not able to identify these regions. I tried to change the limits for the legend, yet the grey...
03 March 2018 9,800 0 View
I have a thin, circular solid part to which I have assigned beam property, with a circular beam profile. In Abaqus, for a circular beam profile, only the radius can be inputted. Is there a way I...
03 March 2018 489 3 View
I am trying to understand how Aramid works as a reinforcing fabric, especially for composite tubes. What I want to know : should the Young's modulus of aramid be lower BEFORE weaving the aramid...
02 February 2018 5,687 3 View
I am trying to model a knitted hose with Aramid (Example attached with this question). For the hose (outer and inner surfaces), I plan to use conventional shell elements (S4R), and for the...
02 February 2018 3,219 1 View
Hello Abaqus-users! I am facing a strange problem in Abaqus. My model consists of conventional shell elements and a distributed surface pressure load condition of 5 bar. In order to plot the...
02 February 2018 3,960 2 View
I am performing a simulation of a cylindrical rubber tube under internal pressure. The maximum pressure that can be reached is -1 bar. At a pressure of -0.27 bar, self-contact occurs and continues...
02 February 2018 3,275 1 View
Hi guys, I have a very simple cylindrical pipe inside which a negative (vacuum) pressure is acting, and hence it "buckles" under that pressure. I performed a modal analysis and obtained different...
02 February 2018 4,210 3 View
Hi all, I am trying to plot a simple load vs displacement plot. I am getting the following error : "x value is not monotonic and interpolation is undefined" I understand that there are...
02 February 2018 7,172 3 View
Hi everyone, I am trying to determine the burst pressure of a rubber hose. I have described the rubber as a Hyperelastic Yeoh material in abaqus, along with the constants. I will be providing...
02 February 2018 6,980 3 View
I have modeled reinforcements using NURBS curves in Rhino. When I try to import the IGES file as a part module, Abaqus does not give me an option to choose Wire. Only 2D and 3D are there. Is...
02 February 2018 5,352 1 View
Hi all, I want to model the following in Abaqus (just the reinforcement for the rubber hose) : (See figure 1) I want to do this in order to identify the value of the force at the contact region...
02 February 2018 1,979 3 View
Imagine I am trying to analyse different brands of shoes. I have collected the input data for all these shoes (the material, the size, the dimensions etc). Now I run approx. 1000 numerical...
01 January 2018 6,366 3 View
Hello everyone. Let's say I have a set of points (Load vs Disp) which gives the ideal "reference" plot. I also have a UMAT which has 4 parameters. Every combination of the parameters generates a...
01 January 2018 1,294 5 View
Hello everyone, I am trying to perform a fairly simple simulation that involves the 'evacuation' of a hose (tube). Basically, the hose is made of rubber and I am giving a pressure load condition...
01 January 2018 2,081 2 View
