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Interface Crack Propagation in Abaqus, using Cohesive Interaction

Submitted by bhaveshshrimali on

Hi

 

I am trying to model interface crack propagation in Abaqus using Cohesive Interaction (default module in Abaqus). My model consists of two rectangular domains attached to each other by the longer edge. I am defining two surfaces on each of these domains and defining traction separation laws for these surfaces. There is a small portion in the middle for which I am not defining any traction separation law (thereby making it my notch). I am then applying displacement controlled loading on the remaining two longer edges. I am having two set of problems:

 

Is it possible to re-define the constitutive equation in abaqus

Submitted by Navid Moheb on

Hello Eeveryone,

I am working with Pore-pressure cohesive element in abaqus. In this element, I can define laminar fluid flow. However, I was wondering to see if I can change it to turbulent flow?

In these types of elements we use Poiseuille's law to model fluid flow. So the form of it is (qd=K_t*del_p). Is it possible to change this equation to another equation with the same degree of freedom?

Thanks,

Bloch-Floquet waves in flexural systems with continuous and discrete elements

Submitted by Giorgio Carta on

In this paper we describe the dynamic behavior of elongated multi-structured media excited by flexural harmonic waves. We examine periodic structures consisting of continuous beams and discrete resonators disposed in various arrangements. The transfer matrix approach and Bloch-Floquet conditions are implemented for the determination of diff erent propagation and non-propagation regimes.

Linking FRIC subroutine to .INP file

Submitted by JMichael on

Good day

I have numerous errors when assigning the FRIC subroutine to .INP file. Any suggestions would truly be appreciated.

What I did:

Within my subroutine I change the .VAL=PROPS(X) to a designated number—i.e. .VAL=0.00

ABAQUS doesn’t recognize these variables(PROPS(X)) sometime.

I created the LIB files (abaqus make library=XXX.for) needed when running the interactive job.

Then added the .lib to the abaqus environment (abaqus_v6), then, allocated the .for file to the working directory as well as the .inp file.

Running ABAQUS simulation using UEL written in C

Submitted by Hanif Hoseini on

Hello,

I have written a UEL in C, with several functions, for a geometrically nonlinear problem. It's said in ABAQUS documentation that UEL's can be written in C, but I haven't been able to find much information about how to run those UEL's. I'm using ABAQUS 6.13 on Win7. Any help on that would be greatly appreciated.

Thanks,

Hanif

ASSISTANT PROFESSOR IN AEROSPACE ENGINEERING

Submitted by kbhas on

The Department of Aerospace Engineering at the Indian Institute of Technology, Madras is seeking to fill Assistant Professor vacancies in the following research areas.

1) Experimental Structural Mechanics/ Composites 
2) Aircraft Aerodynamics (experimentalists preferred)
3) Control and Flight Mechanics of Aerospace vehicles 
4) Aircraft Design (aerodynamic/structural)

Apply online at www.iitm.ac.in by 9th Nov. 2015.

MIT Infrastructure Innovation in a Changing Environment Conference - Fri, Nov. 20, 2015

Submitted by Markus J. Buehler on

Hosted by the MIT Department of Civil and Environmental Engineering in collaboration with the MIT Industrial Liaisons Program (ILP), Infrastructure Innovation in a Changing Environment will explore new economic opportunities and market-driven responses to the challenges facing large-scale infrastructure projects.

Thermite Weld Property!

Submitted by Yal on

Hey all, I am making an educational research on rail-welds, prediction of fatigue life of a thermite weld. and I used Abaqus and FRANC3D for my model but I couldn't get the modules of elasticity, the poissones ratio and the density of the weld from literatures and from codes as well, if there is any with this referrable literature and/or standard i will be so excited.

Thanks,