Question #295301 on Yade changed:
https://answers.launchpad.net/yade/+question/295301

Jan Stránský proposed the following answer:
Hi Jabrane,

you came to c++ variables and scopes [2].

to get correct behavior, one option is to change the declaration of dAX
[1]. Currently (Real dAX=....) it creates a new variable, unrelated to
strainer.dAX.
Just delete Real (i.e. assign directly dAX=...) and then dAX refers to the
class member strainer.dAX.

Another option is leave it as it is and add
this->dAX = dAX;
somewhere after dAX is computed.

cheers
Jan

[1]
https://github.com/yade/trunk/blob/master/pkg/dem/UniaxialStrainer.cpp#L95
[2]
http://stackoverflow.com/questions/30494407/declaring-a-local-variable-within-class-scope-with-same-name-as-a-class-attribut


2016-06-14 17:37 GMT+02:00 Yor1 <question295...@answers.launchpad.net>:

> New question #295301 on Yade:
> https://answers.launchpad.net/yade/+question/295301
>
> Hello Yade users !
>
> I try to calculate the external work on a sample in tensile test.
> In fact, i calculate the external work with this simple formulate
> "Wext_incremental=AppliedForce*displacement_incremental".
> I want to integrate this formulate in the sources UniaxialStrainer.cpp
> In uniaxialStrainer.cpp the incremental displacement is calculated and
> named "dAX".
> In order to verify the behavior of incremental displacement, i define
> "dAX" in uniaxialStrainer.hpp like this
> ((Real,dAX,0,,"Current incremental displacement")) in the line 43 of
> UniaxialStrainer.hpp
>
> My problem is that in the simulation of tensile test , dAX=0 during the
> simulation.
> I call dAX in the python script strainer.dAX
> I don't understand where is the problem.
>
> https://github.com/yade/trunk/blob/master/pkg/dem/UniaxialStrainer.hpp
> https://github.com/yade/trunk/blob/master/pkg/dem/UniaxialStrainer.cpp
>
> Best regards.
> Jabrane.
>
>
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