ANSYS simulation of beam with variable Modulus of Elasiticity (E)
ANSYS simulation of beam with variable Modulus of Elasiticity (E)
(OP)
Hello all,
I need help in how could I model a beam which has a variable modulus of elasticity along its length (lets call this the x-direction).
Originally the modulus of elasticity was obtained as a function, but I could settle for breaking the beam in little bits and assigning a different value to each of these sections. I have not been able to overcome this issue. I am not very proficient with ANSYS workbench so maybe there lies the issue. Any input is greatly appreciated.
Thanks
I need help in how could I model a beam which has a variable modulus of elasticity along its length (lets call this the x-direction).
Originally the modulus of elasticity was obtained as a function, but I could settle for breaking the beam in little bits and assigning a different value to each of these sections. I have not been able to overcome this issue. I am not very proficient with ANSYS workbench so maybe there lies the issue. Any input is greatly appreciated.
Thanks





RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
If breaking the beam is good enough this is easy to perform, regarding modulus as a length function, I dont know ANSYS good enough to answer this.
You can split the beam to small pieces using design modeler (how many splits depends on you), then create an equivelent number of materials with different modulus and assign each material to each part of the beam. Don't forget in design modeler to create one part from all the pieces (by selecting all the pieces right click on with the mouse and choosing "form part") this will assure that you have a continuous mesh and that the part will be analysed as one part.
This is the easiest method that I can think of, but maybe you should wait to the more experienced ANSYS users with a better answer.
Best regards.
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
finish
/CLEAR,NOSTART
/units, si
/filname, mat_mod_change
/title, mat_mod_change
/OUTPUT, mat_mod_change_1, txt, , D:\ANSYS files
/PREP7
a=5
b=2
c=4
nus=0.34
kolt_X=20
*dim,Es,table, kolt_X, , , X, , , 0
*do, i, 1, 20
Es(i,0)=i
Es(i,1)=(i**5)*100+150e9
*enddo
!element type
ET,1,186
!geometry creation
block, 0, a, 0, b, 0, c
!mesh
ESIZE,0.2
MSHAPE,0,3d
MSHKEY,1
VMESH,all
!material properties
!*get, elem_count, elem, 0, count
!*do, ii, 1, elem_count
! *get, elem_num, elem, 0, num, min
! x_loc=CENTRX(elem_num)
! MP,EX,ii,Es(x_loc,1)
! MP,NUXY,ii,nus
! MAT, ii
! emodif, elem_num
! Esel, u, elem, , elem_num
!*enddo
kolt=20
x1=a/kolt
*do, ii, 1, kolt
esel, s, cent, x, x1*(ii-1), x1*ii
MP,EX,ii,Es(x1/2+x1*(ii-1),1)
MP,NUXY,ii,nus
MAT, ii
emodif, all
*enddo
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
Maybe I will have to create another thread for this but how do I simulate a two-span beam. Simple one with extra support in the middle equidistant from both ends.
Thanks a lot!!!
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)
Any other advise?
Thanks greatly
RE: ANSYS simulation of beam with variable Modulus of Elasiticity (E)