• neuru
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  • Registered: 03-05-2010
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Topic: The CCTPlate theory?

How can i find the CCTPlate theory?
why the Bmatrix is [5x9] ?

2 Reply by ErikXdot (edited by ErikXdot 04-05-2010 14:46:08)

  • Registered: 28-07-2008
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Re: The CCTPlate theory?

One reference that specifically discusses the CCT is Numerical Methods in Structural Mechanics by Bittnar and Sejnoha.

As for the B matrix - there are a total of 9 degrees of freedom (1 displacement and 2 rotations at each of 3 nodes), the CCT is a Mindlin element, so there are 5 strains (2 in-plane, and 3 shear).

-Erik

  • neuru
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Re: The CCTPlate theory?

some one can help me.

i solve the "CCCC plate under the uniform pressure"

the following is input file.

in the result , the displacement of mid point in the plate is

Node         261:
  dof 1   d -9.76011400e-018
  dof 2   d -2.97268096e-007
  dof 3   d -3.92060459e-003

is there anything wrong in my input file?

4 Reply by bp

  • bp
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  • Registered: 02-03-2007
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Re: The CCTPlate theory?

Hi neuru,

I have checked your input file. The plate is loaded by bending moments around y axis in each node. Was this your intention?
The values of nodal load should correspond to the DOF ordering in each node. For your problem, as you are using  2dMindlinPlate domain type, the DOFs in nodes are following: w-displacement, u-rotation, v-rotation (in this order). So the nodal load applied should have three components corresponding to force in z-direction, mending moment around x axis, and bending moment around y-axis.

Borek

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