hardening

The superelastic response of NiTi shape memory alloys under various loading conditions is experimentally investigated using thin-walled tube specimens. The isotropic relation between the elastic and shear moduli of austenite and martensite as well as the von Mises stress and strain equivalency are also studied in uniaxial tension and pure torsion. In addition to proportional loading, several non-proportional loading experiments based on both force and displacement control modes are conducted.

Hi everyone
I am trying to use Abaqus with combined hardening (kinematic + isotropic ) material. Structural milled steel strain-stress curve was obtained through tensile coupon test (ASTM E8).
Please let me know how I can extract material property (C , ɣ , Q and b ) for property input?
It is my first approach to martial plasticity so any detailed explanations or examples would be appreciated.
Regards
Farzad

Dear All,

In one of my elastic-plastic simulations, I have used the Combined hardening model with half-cycle to model its plastic behaviour. So, I've fed in a list of values from experimental data. Now, I understand that ABAQUS uses certain parameters to generate the stress-strain curve from the data that I've provided.

Is it possible to find out these parameters used by ABAQUS?

Thanks in anticipation,

Aneesh

Hi Everyone,

I'm analysing the Edge waviness which is caused in the sheet metal when it is undergoing the electrolytic coating process (zinc galvanising plant). i.e. there is waviness (shakes) in one edge side of the sheet metal.

In this process the sheet metal has to go a set of conductor rollers, electrolytic solution and support rollers, where the sheet metal is been loaded when it comes in contact with the roller and unloaded when it moving away from the roller. i.e. it has to undergo stretching, bending and cyclic hardening behavior due to loading & unloading.

Dear researchers,

My name is Chi and I just started my PhD study two months ago. I am experimentally and numerically studying the pore pressure build-up in sands during the pile load test and hence, at the first stage, I need to have a constitutive model for soil with both dilatancy and hardening behaviors.

The strength and hardness of some metal alloys may be enhanced by the formation of extremely small
uniformly dispersed particles of a second phase within the original phase matrix; this must be accomplished
by appropriate heat treatment.