General Mechanical

General Mechanical

Export text file of an harmonic analysis using APDL

    • jordimarce
      Subscriber

      Hi, I need to write my frequency response results (deformation, velocity, phase, for example) in a text file. I can write thew array for each substep and include the frequency of each substep and the displacement in the freuqency range. But I did not find how to include the respective velocity or the phase in the array. (I include the code I am using, which works). 


      /post1


      *set,last


      *get,freq_count,active,,set,sbst


      *dim,freq_array,ARRAY,freq_count,2


      *do,ii,1,freq_count     


         SET,1,ii    


         *GET,temp_b,ACTIVE,0,SET,FREQ             


         freq_array(ii,1)=temp_b       


         cmsel,s,MY_KEYPOINT   


         *get,node_id,NODE,0,num,max     


         *get,displ,NODE,node_id,U,sum     


         freq_array(ii,2)=displ


      *enddo


       


      *cfopen,'myharmonic','txt'


      *vwrite,'Freq','displ'


      (A8,X,A8)


      *vwrite,freq_array(1,1),freq_array(1,2)


      (F6.0,X,F10.2)


      *cfclos

    • jj77
      Subscriber
      The velocity is simple. Multiply displacements with frequency array and time it with 2*pi. That is because velocity is angular frequency times displacement.

      For the phase have a look at plcplx commands and search for examples.

      https://books.google.co.uk/books?id=o9K-q9G6pgIC&pg=PA99&lpg=PA99&dq=plcplx+and+/output+and+ansys&source=bl&ots=pSc04cIwgM&sig=ACfU3U3axpySQD2zFjgVJp3llMSRuSIcTA&hl=en&sa=X&ved=2ahUKEwjI9vO0ud7jAhWIUcAKHT1OBX4Q6AEwGHoECAkQAQ#v=onepage&q=plcplx%20and%20%2Foutput%20and%20ansys&f=false
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