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Jingjie Yeo's picture

Effects of oscillating pressure on desalination performance of transverse flow CNT membrane

https://doi.org/10.1016/j.desal.2018.03.029 In parallel with recent developments in carbon nanomaterials, there is growing interest in using these nanomaterials for desalination. To date, many studies have affirmed the potential of using such nanomaterials for constant pressure desalination operation. In this work, the performance of such membrane when subjected to oscillatory pressure at sub-nanosecond is investigated in detail.

Convert pressure (Surface load) to nodal force

Dear all,

Currently, I have a FE mesh and want to apply pressure load on part of the surface.  Anybody has suggestions on how to convert the pressure load to nodal force theoretically and numerically?

Any help would be appreciated.

 

Thank you very much.

How the pressure in ANSYS is implemented?

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There are several possibilities for the realization of the presure load.
For
example, when I apply a pressure to an area (lets say, thin rectangular
plate) the area of the plate grows during the deformation process. One
possibility is to keep the pressure per unit area constant (in this case
the total force acting on a plate grows during the deformation) and the
second is to keep constant the total force acting on the plate (in this
case the force per unit area decreases with the deformation). I looked

Pressure Load in Abaqus

In Abaqus, *DLOAD element set, Pn, magnitude.

What does "n" in "Pn" mean?

abaqus

Dear Sir/madam

I am doing my master thesis using abaqus in area of structural dynamics. I am in need of help regarded with  how to apply internal pressure, torsional loading , shear loading in buckling of cylindrical shell structural analysis. Please help me in this regard

 

 

With warm regards

Neelesh Ashok

Manaliac's picture

Plywood box under pressure on ABAqus

 

Hello everyone,

 

I am working right now on a plywood box simply supported by wedges under a uniform pressure of 1 MPa.

The pressure is applicated through a rigid shell part layed on the top of the box ( a surface to surface contact). The bottom of the box is on contact (surface to surface) with the rigid shell wedges (2 on the corner of the box and 1 on the middle).  

As a boundary condition, all the DOF's of the wedges are constrained.    

Abaqus- non uniform pressure load in 2D

Hi all,

 

I am new to Abaqus and I found the problem I unexpectedly cannot solve.... My case is quite simple- I have 2D frame, part of which is under nonuniform pressure distribution (described by linear function). When I create analytical field referring to previously created local CSYS, apply a load in 'static general' with distribution determined in analytical field and try to run a job, i have a message:

problem regarding critical initial time step in poroelastic material during consolidation process.

Dear all,

I have a problem regarding critical initial time step in poroelastic material during consolidation process.

As we know, for implicit integration method, it's unconditionally stable. But for the consolidation of poroelastic material,

there is a critical time step t_critical derived by Vermeer and Verruijt (1981), this has also been inclued in the abaqus software (http://129.25.22.58:2180/v6.7/books/exa/default.htm).

Which free finite element analysis software to use for this problem?

Hi,

 

For a personal project I'd like to find a free program that lets me see what happens when I take a beach ball and apply greater and greater weight on it.  I'm specifically interested in the deformation of the ball, and the stresses in the material.

 

Mechanical Threshold Stress model for 6061-T6 aluminum alloy

I have attached a copy of my McMat07 talk below.  The talk is about a modified mechanical threshold stress (Follansbee-Kocks) model that can be used for strain rates > 1000 /s and high homologous temperatures.  In the model, the pressure dependence of the flow stress arises from the pressure dependence of the shear modulus.  Even after using the most accurate models for the shear modulus (and the melting temperature) we find that the pressure sensitivity of the flow stress is underestimated by our model (by quite a bit).

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