ABAQUS

Dear all,
In my FE model (pin on disc), I would like to define a contact property between pin and disc with a friction defination available in ABAQUS. I have assumed that friction coefficient depends on parameters like slip rate, pressure and temperature only. When i used friction coefficients with slip rate and pressure, model works without any error but if i use friction coefficients with slip rate, pressure and temperature, the model doesn't work and come up with following errors;

Dear all,
In my FE model (pin on disc), I would like to define a contact property between pin and disc with a friction defination available in ABAQUS. I have assumed that friction coefficient depends on parameters like slip rate, pressure and temperature only. When i used friction coefficients with slip rate and pressure, model works without any error but if i use friction coefficients with slip rate, pressure and temperature, the model doesn't work and come up with following errors;

Hello,

 I am using Abaqus for a structural analysis problem. In the results I have stress distribution over the structure. I can use odb file to see the distribution of stresses as a function of space and time. 

I want to plot stress at a particular node as a function of time (and may be also stress distibution w.r.t. space coordinates at some instant of time). I have some general idea about the result file that can be generated from Abaqus and can be accessed. I am reading more about it but I am not sure if this is the right way.

The Vernay VernaFlo® flow controls are custom-designed fluid flow management devices used in a wide range of applications and systems where consistent, reliable op-eration is essential. Elastomeric rubber components in these devices deform under the influence of upstream variations in fluid pressure. These deformations adjust the orifice diameter and help maintain a constant down-stream flow rate. In this Technology Brief the perform-ance of a custom VernaFlo® device is evaluated using the fully coupled fluid-structure interaction solution provided by the Abaqus co-simulation capability.

Engineering problems that involve the coupled response of a flowing fluid and a deforming structure constitute a broad class referred to as fluid-structure interaction (FSI). The interaction can be mechanical, thermal, or both. Many important problems involve some form of FSI, but the coupling effect is often ignored because of a lack of readily available solution technology. To address this limitation, Dassault Systèmes SIMULIA Corp. and Fluent, Inc. have partnered to provide a coupled solution capability.

Hello everybody,

The sources of noise in a vehicle are many, including the engine, driveline, tire contact patch and road surface, brakes, and wind to name a few.  A Noise, Vibration, and Harshness (NVH) engineer is tasked with predicting these noises early in the design phase to make the necessary adjustments to ensure a harmonic ride, so to speak. The latest SIMULIA Tech Brief illustrates the effects that rolling tires have in contributing to NVH.

Dear all,

Iam modelling a simply supported RC slab with Abaqus using Concrete Damaged Plasticity subjected to a concentrated load at the top surface of the slab. I have used element type C3D8R for concrete and truss elements to represent steel bars.

I found the result of FEM showed that the linear part of load versus deflection, i.e. from zero load up to yield load shows a very stiff curve compare to the experimental test results.

My question is that how to lower down this curve so that it would match the experimental test result.

Hi,

I'm looking for tutorials or example problems on carrying out Fluid Structure Interaction simulations using Abaqus.  

I have a large amount of experience with Abaqus Standard however Abaqus CFD is very new to me.  Would anyone have the training course notes on either "introduction to "ABAQUS/CFD" or "FSI Simulation with Abaqus"? If so, I'd really appreciate a copy.

Thanks

Ted 

I mesh most of my parts in C3D8R. My simulation are quasi-static, and involve a lot of contacts. To model steel, I use a classic elastic-plastic behavior, coming from stress-strain curves we measured. I have the yield strength of the material and the strain at break. My questions concern post-processing.

Hi there! I am really new to Abaqus and I need to model a composite
laminated crash cone under impact to a flat solid wall (analytical
surface is used). I modelled a cone with a layers of conventional shell
elements with hashin failure criteria and surface-based cohesive
behaviour as interaction between layers representing the interface of
composite laminates. The model runs successfully but once I checked the
energy balance, the damage dissipation energy from the cohesive, it
turned out to be NEGATIVE (I think this is wrong).

Hi,

I am attempting to couple a moving multi-body load to a surface using ABAQUS/explicit, i.e. the loading varies depending on the surface displacement at the previous time step.

I realise that VDLOAD cannot access values such as element displacement directly but can access variables using tools such as utility subroutines e.g. UEXTERNALDB.  The only problem is that such utility routines only seem to work for ABAQUS implicit.

Similarly vgetvrm can be used to output stress values but not displacement.

Hi,
         I am using ABAQUS 6.10.1, Microsoft Visual Studio 2008, and Intel Visual Fortran Compiler Professional 11.1.060 on Windows 7 Premium. So far ABAQUS of my system is able to process user subroutine written in FORTRAN 77 (.for file) without any problem. However, may I know is it possible to make ABAQUS process user subroutine written in FORTRAN 90? Waht setting should I change and what format ( .for or .f90 ) should the FORTRAN 90 user subroutine be saved in order for the linking to work?