User login

You are here

How to determine elastic constants of transversely isotropic material by tension experiment?

Yang.Xia's picture

Hello. I am working to design an experiment to  determine elastic constants of transversely isotropic material (also plastic-like material). There are five independent coefficients, and with experiment methods described in this paper doi:10.1016/j.ijrmms.2011.12.004, I need to carry out at least 3 tensile experiments. In the experiments, I need to measure not only the tensile strain-stress curve, but also at least one transverse strain to determine the poisson's ratio in the plane of transverse isotropy to a stress acting parallelly to it.

 

My question is, how to determine all elastic constants of transversely isotropic material by tension experiment, without measuring the transverse strain? Is it possible?

 

I want to discuss this, because that compared with axial strain, transverse strain is hard to measure in the experiment. Any comments are welcome.

Best,

Yang 

 

 

It would take many tensile tests. For instance, consider the xy isotropic plane first, perform tensile tests in the 0deg and 45deg. Using stiffness transformation equations you can determine Qxx and Qxy, where Qxy will give you Poisson's Ratio. Perform similar experiments in yz and xz planes. But measuring Poisson's ratio directly is still the easiest.

behrad_koohbor's picture

Fabrice Pierron's picture

Another possibility: perform a more complex experiment, measure strain fields with DIC, grid method or ESPI and use inverse identification (Virtual Fields Method).

http://link.springer.com/article/10.1007%2Fs11340-012-9703-4

http://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2007.00346.x/abstract;jsessionid=97075227E2FFB805EEE20EA498BA6655.f01t03

www.matchidmbc.com

Kista tidak dapat menjangkiti bagian organ tubuh lain, itulah sebabnya kista relatif lebih mudah diangkat dengan cara operasi, dan tidak berbahaya bagi kesehatan penderitanya Obat Kista. Beliau adalah Sigit Yuwono, saya lahir di Surabaya lima puluh delapan tahun lalu tidak disangka saya mengidap penyakit gagal ginjal obat gagal ginjal. Sakit batu ginjal yakni benda padat menyerupai batu yang letaknya di sepanjang saluran kemih dan dapat timbul sakit obat batu ginjal.

Subscribe to Comments for "How to determine elastic constants of transversely isotropic material by tension experiment?"

Recent comments

More comments

Syndicate

Subscribe to Syndicate