Skip to main content

Blog posts

Need help in Creep modeling in ANSYS

Submitted by almasudme on

Can Anyone help me how to do creep modeling in ansys? 

 

I need to follow the creep law __>      effective creep strain (e at time t) = S. T. e^(-H)

 

S=(a0)^t.(sigma)^(a1) ;     T = t^(a2)+(a3).t^(a4)+(a5)t^(a6)   ; H = (a7)/[(theta)+273.16]

a0 to a7 are material constants.

I have the experimental data and tried to fit the curve in Ansys to obtain the material constants. 

I tried to follow the ansys help file steps. But facing erros messages.

Nanocomposite Electrical Generators....

Submitted by Kmomeni on

A nanocomposite electrical generator composed of an array of zinc oxide nanowires is considered.
The electric potential distribution along zinc oxide nanowires is modeled using continuum
mechanics and Maxwell’s equations for the case of axial loading. A perturbation technique is used
for decoupling the constitutive equations. The governing differential equations are solved using a
finite difference method. It is shown that a gradient of electric potential exists along the axis of the
zinc oxide nanowires. Maximum and minimum values of electric potential exist at the extreme ends
along the nanowire length and have opposite signs. The positive and negative voltages are separated

Rupture of a highly stretchable acrylic dielectric elastomer (VHB)

Submitted by Matt Pharr on

Dielectric elastomer transducers are often subject to large tensile stretches and are susceptible to rupture. Here we carry out an experimental study of the rupture behavior of membranes of an acrylic dielectric elastomer (VHB 4905). Pure-shear test specimens are used to measure force-displacement curves, using samples with and without pre-cracks. We find that introducing a pre-crack into a membrane drastically reduces the stretch at rupture. Furthermore, we measure the stretch at rupture and fracture energy using samples of different heights at various stretch-rates. The stretch at rupture is found to decrease with sample height, and the fracture energy is found to increase with stretch-rate.
This paper has appeared in the Journal of Applied Physics and can be downloaded from:

Modelling crack propagation using XFEM in Abaqus (Fracture Mechanics)

Submitted by waqas.hf on

HI,

 I am using XFEM to model crack propagation in thin aluminum panles using ABAQUS. The reason for modelling it is to check my numerical model against the results published by Lyonel Reinhardt, t, J.A. Cordes in the paper XFEM Modeling of Mixed-Mode Cracks in Thin Aluminum Panels  (http://www.3ds.com/fileadmin/PRODUCTS/SIMULIA/PDF/scc-papers/Def-XFEM-Modeling-Mixed-Mode-Cracks-Thin-Aluminum-Panels.pdf)

Meshing with UEL/UMAT element

Submitted by somusshabadi on

Hello All,

Does anyone have any idea how to automate meshing  using USER DEFINED ELEMENTS (for Example UEL) in Abaqus using python. Actually I need to mesh an arbitrary shaped structure  with 9-Node Quadrilateral Element. Abaqus doesn't support meshing of  9 Node Quad Element (S9R) either. 

Computational Biomechanics for Medicine VII: a MICCAI 2012 satellite workshop (Nice, October 01). Submission Deadline: 22 June

Submitted by adwit on

Computational Biomechanics for Medicine VII: a MICCAI 2012 satellite

workshop (paper submission deadline extended till 22 June 2012)


_________________________________________________



         Call for papers



Computational Biomechanics for Medicine (
http://school.mech.uwa.edu.au/CBM2012/,