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Differences between cohesive/interface/embedded process zone

Submitted by David MORIN on

I am PhD student and i'm working on the behavior of bonded joints under impact and i have one question :What are the differences between a cohesive element, an interface element and a embedded process zone element ?  Do they have fundamental differences or it's only a difference of the cohesive law expression.

Central crack loaded with stress

Submitted by Eric.John on
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1. Central crack loaded with stress.

(A) The stress intensity factor for a central line crack in an infinite plate is found to be  

 K=p(πa)^.5

 

where p is the pressure exerted along the crack line. (A) Does this formula imply a stable or an unstable crack propagation when p reaches the critical stress level? (B)  Present an experiment to support your answer in (A). Specify your experiment in details.

New (Free!) Solid Mechanics Textbook

Submitted by Allan F Bower on

I have posted an advanced solid mechanics textbook on http://solidmechanics.org/

It works on Internet Explorer, but may not work on all browsers. Topics include: mathematical descriptions of deformation and forces in solids; constitutive laws; analytical techniques and solutions to linear elastic and elastic-plastic boundary value problems; the use and implementation of FEA; fracture mechanics; and the theory of deformable rods, plates and shells.

Using Abaqus for orthogonal metal cutting problems

Submitted by navinmadhavan on
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How do we use Abaqus to simulate the orthogonal metal cutting process and check for values of various parameters during the cutting operations ? I would be extremely thankful to anybody who could assist me on this . Tahnking You in Advance ,

 

Navin  

Introduction to Cohesive Zone and Modelling DCB Test using Cohesive Elements

Submitted by craime on

I am currently working on a project to model DCB test in ABAQUS. My current problem lies in understanding cohesive zone modelling. I was wondering if anyone can forward me a couple of  materials regarding the introduction of cohesive zones?

 This would help me understand the material greatly and help me in modelling the DCB test.

 Another question in ABAQUS:  how do you implement the material properties for cohesive elements? in particular, what values should i be using for them? e.g. E, G1, G2?

An Introduction Course on Mechanics

Submitted by Ji Wang on

 

We are currently offerring an introductory course on mechanics for junior students for all fields and subjects.  It is a so called general knowledge course for students to know more on certain subjects and fields before a decision on choice of a major is made.  Since the Mechanics Department in our University has not been popular for so long, we have decided to evangalize our field with more glorious history of Mechanics: Newton, Bernoulli, Euler, Clausius, Faraday, and Einstein.