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i am working on composite risers and it has inner steel liner and carbon epoxy layers ,where there are  19 layers with 88 and 0 degree orientation alternatively. plss help me in modeling it.

1) i have assumed nu12 =nu23 for transverse isotropy case. i needed engineering constants to give as material properties. am i right???

2)how to create local coordinate system and assign it material orintation.

Dear All,

I have much problem when modelling my project with ANSYS, one of problem that I met always like this 

Hello

Are any analytical solutions for the effective CTEs (coefficent of thermal expansion) of orthotropic composites available?

I am trying to predict the CTEs of a resin matrix with Al reinforced fibers which have a rectangular cross-section (not a square). All the fiber in 90 degree direction. I know the volume fractions and the details of the rectangular cross section as well as the properties of the resin and Al. The CTEs in the two transverse directions are different.

 Thanks and regards

 Yunxin

Dear readers

I am trying to carry out a mechanical-magnetic coupled harmonic analysis by using ANSYS. Any ideas, advice or difficulties on this kind of coupled harmonic analysis are greatly appreciaed.

Thanks and regards#

Yunxin 

Hi there,

I have been trying to model fracture toughness test in abaqus but unfortunately I am faced with difficulties of how to apply the tensile loading on the compact tension model's pin holes. Most papers I have come across show only pressure being applied on the flat upper most edge of the test specimen instead of the pin holes. Please could there be someone out there who could show me how to apply this tensile loading right on the holes?

Thanks in advance.