bending thickness and membrane thickness

[ANMH]

why in program ask to choos bending thickness and membrane thickness although ican choose membrane or plate from type??

 

[johnbridge231]

shells incorporate both functions of membrane and plate elements. So you can specify a relevant thickness for each function of the shells.

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html

 

[ANMH]

can you give me example that i can change shell thickness for bending and membrane .....

 

[asixth]

I never have but I am sure there is an application out there where it may be useful to input different values.

 

[johnbridge231]

If you zero the f11, f22 and f12 values, the shell element is turned into a plate.
On the other hand, if you set m11=m22=m12=0, then it is turned into a membrane element.

In case of slabs, I would suggest you to use smaller than 1 values for m11,m22 and m12, so that the slab will not bend and the beams will carry a lerger load.

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html