Contents


The calculation of CLT panels is based on the laminated shell theory, which is a general way of calculating any kind of laminated shells, regardless on the material of the components. However, in the civil engineering practice the most popular application area is definitely the timber shells. Keep in mind this, in FD user interface the CL(T) feature strictly connects to timber panels, including the possibility for both analysis (internal forces/stresses) and design options. Moreover, to the make the best of the applied mechanical theory, general composite laminated shells are also implemented, with any kind of constituent material. As the design of these general composite shells are not supplemented by the standard, only analysis results are available of them.

Definition on User interface

For the definition of CLT panels the currently existing Timber plate and Timber wall tools are used:

1574678804425-887.png

All the tool window options (Define, Properties, Hole, Edge connection, Physical extent, Panels) are valid and applied for both original and CLT timber panels.

1574679210030-270.png1574679223883-632.png

On the General tab the Eccentricity on General tab is also modified (improved). So far it was only a display option, without any effect on the calculation. This limitation has no real technical obstacles, thus it will be the choice of the User with a new checkbox here.

On the Material tab of properties dialog, we can set the mechanical model of the plate. The original orthotropic shell model is supplemented with two new types, so User can select from the following options:

  1. Orthotropic shell
  2. Cross laminated timber
  3. General laminated composite

For the sake of uniformity, Display stiffness is available for all three kind of mechanical models. This matrix is calculated to the middle surface of the element (independently on the eccentricity of the General tab), it should be noted in the tooltip of this button.

1574680093243-258.png

Independently on the selected type, the General, Border and Panel tabs are the same for all the three options, only the Material tab changes according to the selection.

Orthotropic shell

Within this feature, there is not change on the Material tab of orthotropic timber shell (picture taken after the separation of creep factors and library displaying change to tree view item)


Feature 2

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."


Feature 3

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
)))

Created by Hamid Richard Allili on 2019/11/25 11:46
Copyright 2022 StruSoft AB
FEM-Design Wiki