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piezoelectric beam with connected circuit...wire? ?

  • Thread starter Thread starter Staedtlerp
  • Start date Start date

Staedtlerp

Guest
Hello to all:smile:
I beg to be a neophyte and to have begun to use ansys only for a few weeks. .
cmq I come to the therefore...I have realized a piezoelectric travetta, I have assigned the type (plane223, therefore two-dimensional), boundary conditions and loads...my problem is that I can not trace the circuit connected to the piezo, and in particular I can not find the command that allows me to trace the wire, that is the piece of wire that connects for example a resistor with a capacitor. I press that I'm working with ansyss apdl with the command list, so I created a .txt file where I write my commands!
the strange thing is that while with the circuit builder (piezoelectric) I can easily track the wire with the omologist command, from the command list I don't know what command to use! :confused:
These days I tried to do one thing....I tracked with the circuit builder wire, and then, from the file menu, I used the write db log file command, so as to save the command list. the command list contained the wire commands that are the following:

et,1,200,0,0,0
type,1
e,1,2
cp,1,volt,1,2
cpmerg,volt

2 questions arise:
1) in the et command there is immediately after 1 representing the number assigned to the element, followed by 200 that should be the type of element....but in the guide and in particular in the element reference guide nn I find no element with this name...and then what are the successive numbers?? Boh!

2)When I copy these commands on my .txt file and put them in the command window, I track the wire, but differently than how the circuit builder does.. .that is: from command list the cable is represented with an arrow that goes from the first to the second knot, and on the knots there is a sort of circle. all this with the circuit builder does not happen, the wire is defined in a simple way as a connection between two knots, without arrows and circles....:confused:

I'm sorry if I've longed, but I wanted to explain things well:
Thank you so much!
 
the ansys log file is read line by line with the help of the online guide.
Code:
et,1,200,0,0.0
type,1
e.1
cp,1,volt,1,2
cpmerg,volt
the first line tells you that you created, with identification number 1, a mesh200 element type (i.e. a non-reslvable generic element) with all set keyoptions equal to zero.
the second line tells you that you have created an element between knots number 1 and 2.
the third line tells you that you have coupled in the "coupled set" number 1 the degree of freedom "volt" of knots 1 and 2, which therefore are equipotential.
the last line controls all the "coupled set" you have defined and possibly brings together the identical ones.
the way to build the circuits in ansys unfortunately is not very intuitive... you have to exercise a lot and strudiare multiple times the log file to understand well.
 
thank you very much:finger:...you were very clear and exhaustive:....the only problem remains to understand why if I design the wire with the circuit builder does it in one way, if the design with the command list does it in another way...
 
somewhere you're making a mistake!
the circuit builder at the end other does nothing but generate a set of commands... you have to understand that commands generate and then you can replicate them.
 

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