>Non Linear Hyperelastic Finite Element Analysis

18 03 2011

This post would share Need To Knows & discuss some tips and tricks related to Non Linear HyperElastic FE Analysis.

NeedToKnow#1: The poisson’s ratio of Rubber although being 0.5 is considered as 0.4955 in a Finite Element Analysis. The reason being that the Bulk modulus becomes infinity at Poissons ratio of 0.5. Also the volumetric strain equals near zero.

NeedToKnow#2: Nearly or Fully Incompressible Material (with Poisson’s ratio nearly 0.5) exhibit Volumetric Locking in Fully Integrated Elements

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Date : March 18, 2011
Categories : hyperelasticity, nonlinearity

2 responses

22 03 2011: PAVAN (20:41:42) :

>may sound lame, but wat is volumetric locking?

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24 03 2011: Amogh Mundhekar (21:06:20) :

>Hello Pavan,I have published a post titled "Volumetric Locking in Finite Elements". Hope it helps you. let me know.

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