research
Modelling Hyper-elastic Plate Using ABAQUS
Dear All,
For months, I have tried to model a plate with circular hole which has the properties of hyper-elastic material (Ogden) but the results are still not promising compared to literature (Y Basar 1998). The main problems are:
1. The maximum load I succeeded to apply was q=26, while literature had applied load up to 90. For q > 26, the analysis will terminate with errors such as too many attempt, excessive distortion etc.
2. The results I get for q<26 are not the same as literature.
I attach my best result for your viewing.
Journal Club Theme of April 2009: Mechanobiology and Molecular Mechanomedicine
Professor YC Fung, the widely-recognized father of modern biomechanics, recently challenged the field by asking this fundamental question: “What axioms of the classical continuum mechanics have to be changed for biology?”
Mechanical properties of self-assembled monolayers
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I did some preliminary study on free-standing self-assembled monolayer (only 1 nm thick). Bulge test was used to determine the elasticity and residual stress in the membrane. I just took the model from Prof. Vlassak's paper (J mater. Res 7,1992,3242). Althought the model could explain the data very well.
XFEM-structure with openings
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IF I have a 2-D slab (plate) which has some openings - can the XFEM prove advantageous over conventional FEM for such case?That is, can I use enrichment functions around the openings (as around the cracks).
Automatic failed element removal
Hi every one,
I think that there is a method for automatic failed element removal using UMAT subroutine, I mean that at every iteriation failed elements with the help of a failure criterion to be indicated and to its material behaviour to set to zero and this means that a path for crack propagation will form .... Anyway, if any body is intrested we can clarify this subroutine step by step for all of the visitors in this website, I mean that an open source subroutine to be expanded here.
Thank you,
Effect of interface
Hi,
I am simulating failure of concrete in tension and compression on a concrete representative element volume. I have modeled mortar matrix and aggregate (inclusion) separately i.e my model consists of two material and assumed them as perfectly bonded. My question is, if I add interface zone between matrix and inclusion how will it effect my overall failre or can I neglect inerface.
With Warm Regards
Gouse
Effect of aggregate (coarse aggregate) size on conpressive strength of concrete
Hi,
I want to know what is the effect of coarse aggregate size or size of the aggregate on compressive strength of concrete.And similarly what is effect of aggregate size on tensile strength of concrete.
I have few papers which contradicts each other so I am confused.
With Warm Regards
Gouse