Doubt In Abaqus -low velocity impact

[vikram manoj]

Hello all,

I am modelling a 10 layer composite laminate with Frame (shown in figure). I am little bit confused regarding the boundary conditions to be applied for frame. I am applying two frames bottom frame and top frame. For bottom frame the bottom surface is fixed and on top frame i am applying a pressure of 350 kPa. The value of pressure i have considered from a scientific journal paper in the filed of low velocity impact. I have applied a symmetry boundary conditions on two faces i.e. on x-symm and y-symm. with 10 J (mass of the impactor =5.65 kg and velocity is 1.735) my plate is sliping from the frame support. So please help me what boundary conditions should i apply for frame . I have to apply frame.

 

[FEA way]

What are the contact properties between the frame and the plate (mainly friction coefficient) ?

 

[vikram manoj]

What are the contact properties between the frame and the plate (mainly friction coefficient) ?

yes I am providing friction coefficient.

 

[vikram manoj]

Sir, i have one more doubt. I am applying an element deletion criteria. Is this the right way to do ?


if((d11.eq. 0.9))then
ngpt(nElement(k), nMatPoint) = 1
stateNew(k,i_svd_StatusMp) = 0
end if
if (stateNew(k,i_svd_StatusMp).gt.zero) then

if (stateNew(k,i_svd_DmgFiberT) .ge. 0.9) then
dft = 0.9d0
else
dft = stateNew(k,i_svd_DmgFiberT)
end if
if (stateNew(k,i_svd_DmgFiberC) .ge. 0.9) then
dfc = 0.9d0
else
dfc = stateNew(k,i_svd_DmgFiberC)
end if
if (stateNew(k,i_svd_DmgMatrixT) .ge. 0.9) then
dmt = 0.9d0
else
dmt = stateNew(k,i_svd_DmgMatrixT)
end if
if (stateNew(k,i_svd_DmgMatrixC) .ge. 0.9) then
dmc = 0.9d0
else
dmc = stateNew(k,i_svd_DmgMatrixC)
end if

if (d11 .ge. 0.9) then
d11 = 0.9d0
end if
if (d22 .ge. 0.9) then
d22 = 0.9d0
end if
if (d33 .ge. 0.9) then
d33 = 0.9d0
end if
if (d44 .ge. 0.9) then
d44 = 0.9d0
end if
if (d55 .ge. 0.9) then
d55 = 0.9d0
end if
if (d66 .ge. 0.9) then
d66 = 0.9d0
end if