How to impose a base acceleration in a model with contacts in Abaqus ?

05 June 2017 6,118 3 View

How to choose material damping parameters that are not "too false" ?

31 December 2016 3,190 2 View

When do you consider a DOE polynomial model as complete ?

11 December 2016 7,473 9 View

Is this normal to have some initial dynamic instabilities in a FEM with sliding contacts ?

Hello, I am trying to model a threaded joint in Abaqus. I would like to study the impact of the initial acceleration on the sliding behaviour of the joint. I have taken the contacts into account...

05 June 2016 8,792 3 View

What are the equivalent roughness parameters for the contact between two surfaces ?

Hello, I have to model the contact between two surfaces. To do that, I use a constitutive contact model, in which I need the 3 roughness parameters Rq (RMS rugosity), etha (number of asperities...

01 February 2016 5,956 6 View

how to code an hysteretic friction behaviour in Abaqus ?

Hello everyone, I have to use an hysteretic friction model. I am trying to code this in Abaqus by using the FRIC subroutine. The language is Fortran 77. I am testing my code on a very simple model...

10 November 2015 5,970 1 View

Is there any energetic criterion for bolt loosening ?

07 August 2015 7,345 9 View

What is the best way to clean metallic parts for sliding tests?

Hello, I am studying the dry sliding behaviour of some materials. I have to clean some small metallic parts that will be in contact. The contact zone is a circular plane rough surface. After they...

07 August 2015 4,710 8 View

Does anybody have some experience in the FRIC subroutine in Abaqus?

06 July 2015 1,023 10 View

How might I model the contact of an elastic punch over a rigid plane ?

05 June 2015 3,286 3 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

How can we use a hybrid element in Abaqus Dynamic/Explicit for impressible materials?

Hi, all! How can we use a hybrid element in Abaqus Dynamic/Explicit for impressible materials? I have not find the choice for explicit element in Abaqus CAE. I am wondering whether it is possible...

25 February 2021 9,936 2 View