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Comparing performance of user subroutines in Abaqus

Dear Mechanics community,

My current research work is focused on simulation of NiTi stents.

I need to benchmark my UMAT subroutine against inbuilt VUMAT subroutine for SMA in Abaqus.

It would be great to have suggestions on how can I go ahead on this task (like typical benchmark analysis, simulation of CAD models etc.,).

The basic idea is to analyse the limits of both the subroutines.

Warm Regards,

CompMech enthusiast...

Frank Richter's picture

ABAQUS built-in SMA model

Dear Mechanicians,

time and again the question of SMA (shape memory alloy) modeling pops up.

In ABAQUS, you can achieve this only by (V)UMAT coding or by using the little-known built-in SMA model.

In the past I have frequently responded to queries on SMA modeling and could refer to a customer help site of SIMULIA. That site is down, regrettably.

I decided to post the files here to avoid responding with a longer explanation to every individual seeking assistance and uploading the files as E-mail attachment every time.

Underlying Material Response for Lüders-Like Instabilities

► The underlying material response of partially unstable materials is measured. ► This is done for Lüders deformed steel and a shape memory alloy. ► They both exhibit an up-down-up response. ► The extracted responses used in numerical models reproduce the structural responses.

Modelling SMA embeded in composite beam

How to model SMA wire embeded in composite beam using Abaqus using 3D solid extrusion?

Modelling SMA embeded in composite beam

How to model SMA wire embeded in composite beam using Abaqus using 3D solid extrusion?

arash_yavari's picture

Analysis of the Rate-Dependent Coupled Thermo-Mechanical Response of Shape Memory Alloy Bars and Wires in Tension

In this paper, the coupled thermo-mechanical response of shape memory alloy (SMA) bars and wires in tension is studied.It is shown that the accuracy of assuming adiabatic or isothermal conditions in the tensile response of SMA bars strongly depends on the size and the ambient condition in addition to the rate-dependency that has been known in the literature.


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