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Journal Club February 2010: Mechanics of Patterned and Structured Interfaces

Submitted by Kevin T Turner on
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adhesion
JKR
patterned interface

Welcome to February 2010 Journal Club!  This month, I look forward to a lively discussion on the mechanics of structured and patterned interfaces in which geometry is used to tailor adhesion.  Much of the work in this area has been inspired by a variety of animals and insects that have feet covered with small structures (often hierarchical and sub-micrometer in size at the end) that allow them to strongly adhere to a broad range of surfaces.  The best known example is the Tokay Gecko (Gekko gecko), which can achieve an adhesion force much greater than its body weight

Material Properties on Different Elements with Common Node

Submitted by shrimad on
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node material property common

Hi,

 

I am having a conceptual doubt regarding the following case. Any suggestions are appreciated. We are here assuming linear elastic material.

 

 Let's say I have two bodies with different properties, and they share a common node (as in the attachment). However, I want to perform an analysis without any coupling or contact phenomena. Let's say thermal expansion of the bodies.So while doing the FEA analysis, I can assign the material properties in the element stiffness according to the body elements and solve.

 

Pyramid elements in ABAQUS

Submitted by nasibeh325 on
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Hi every body,

 

I need to generate a mesh around the crack front line in 3-dimensional space using a layer of prism (wedge) elements at the crack line and tetrahedron elements at the rest parts of the model. However, to keep the compatibility we also need to adopt a layer of pyramid elements between wedge elements and the tetrahedrons. Dose any body know how can I do that in ABAQUS?  Is pyramid element available in ABAQUS's element library or is there any chance to get that through degenerating another element type? if so, how?

Critical Experimental and Theoretical Tests for Failure Criteria

Submitted by Richard M. Chr… on
research

 A new section has been added to the website http://www.failurecriteria.com/.  This is on critical tests for failure criteria.  It summarizes most of the previous entries to the website and provides evaluations of the most salient of the failure criteria by comparing with high quality experimental data.

 

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