Skip to main content

research

Local material orientation Abaqus

Submitted by rkoets on
Forums
Ask iMechanica
Choose a channel featured in the header of iMechanica
research
Free Tags
ABAQUS
Material
modulus of elasticity
local
orientation
fiber
shear modulus
poisson ratio

Dear All,

My name is Ronald, student at Eindhoven University of Technology, master Structural Design and i have an import question about the FEM programme Abaqus, about orthotropic materials.

I defined an orthotropic or anisotropic material in Abaqus by using the option; engineering constants or orthotropic (all linear elastic).

Abaqus asks for the modulus of elasticity in direction 1, 2 and 3 and the shear modulus and poisson ratios.

So far so good.

Complex interplay of nonlinear processes in dielectric elastomers.

Submitted by Jian ZHU on
research
suo group research
dielectric elastomer

A combination of experiment and theory shows that dielectric elastomers exhibit complex interplay of nonlinear processes. Membranes of a dielectric elastomer are prepared in various states of prestretches by using rigid clamps and mechanical forces.

Tensile stresses in an elastic body accelerated by an attractive body force

Submitted by Jayadeep U. B. on
research

Dear all,

Can someone suggest me literature where the problem "tensile stresses developed in an elastic body accelerated by an attractive body force" is discussed.  The situation is similar to finding the stresses developed in a celestial body falling into black hole (though my interest is in impact with adhesive forces).

The problem is about solving the inhomogeneous wave equation, where inhomogeneous part is due to the attractive force.  So any helpful hints in that direction will also be useful. 

Brittle cracking in brittle materials

Submitted by surot on
research
Brittle failure

Hi there,

 I am trying to simulate a crack opening process in ABAQUS. I start up from a simple model of plate with a notch subjected to tension. I would like to see the crack opening. To model a brittle mnaterial behaviour I have added a brittle cracking with sub-option brttle failure and brittle shear.

Please look at dat file:

*Heading

  *Node

  *Element, type=CPS3

  *Element, type=CPS4R

  *Nset, nset=ASSEMBLY_PART-1-1__PICKEDSET2

  *Elset, elset=ASSEMBLY_PART-1-1__I1

Modeling of Viscoelasticity with Hypoelasticity constitutive equations

Submitted by Rotimi Adeleye on
research
thermoviscoelasticity

Hi all,

I'm trying to model high temperature viscoelasticity using hypoelastic constitutive equations. I'm not sure of how to include the rotation tensor in the generalized viscoelastic equation.

kindly advise me.

Thank you very much.

Objective Stress Rates in Finite Strain of Inelastic Solid and Their Energy Consistency

Submitted by bazant on
research
finite element analysis
large deformation
Variational Methods
Commercial Software

In many practical problems of solid mechanics, it is sufficient to characterize material deformation by the small (or linearized) strain tensor. But there are also many problems where the finiteness of strain must be taken into account.

Almansi strain

Submitted by Jerry Brown on
Forums
Ask iMechanica
Choose a channel featured in the header of iMechanica
research

How is the Almansi-Eulerian strain used?

Is there a way to use it with some form of static equations of equilibrium to solve small strain, large rotation problems? I have sucessfully applied the Green-Lagrange strain. But, I can't find anything on how the Almansi-Eulerian strain is used to formulate and solve boundary value problems.

Subscribe to research