Robot Structural Analysis

## Robot Structural Analysis

Member
Posts: 3
Registered: ‎10-06-2011
Message 1 of 6 (133 Views)

# Cylindric shell question

133 Views, 5 Replies
01-30-2012 10:49 PM

I examine an cylindrical shell r=1,46 meters,l=6,4 meters with loads of selfweight, snow 0,7 and insulation 0,342.Thickness is 8 centimeter. Load Combination: ULS -> 1,35G+1,5Q. Shell suports are fixed. I take results in displacements such 0,111 mm and smaller. This seems a little confussing. In order to examine the shell i add a linear displacement of 4mm in scale from node to node for example 1node-4mm, 2 node- 3,9mm, 3node->3,8 until the end of displacement. I took great moments. I believe that is impossible to have only 0,111mm Uz. Please could you tell if there is a problem with displacements displayed by the programm?

Kind regards,

iassoniako

Product Support
Posts: 3,745
Registered: ‎04-26-2010
Message 2 of 6 (125 Views)

# Re: Cylindric shell question

01-31-2012 12:40 AM in reply to: iassoniako

Rafal Gaweda
Product Support
Posts: 3,745
Registered: ‎04-26-2010
Message 3 of 6 (109 Views)

# Re: Cylindric shell question

01-31-2012 05:34 AM in reply to: Rafal.Gaweda

My quick check: geometry as you described, thickness 8cm Concrete, only selfweight.

Resulst as shown below (in mm)

Rafal Gaweda
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Posts: 3
Registered: ‎10-06-2011
Message 4 of 6 (102 Views)

# Re: Cylindric shell question

01-31-2012 07:13 AM in reply to: iassoniako

I mean that case

I feel that the Uz displacements are very small.

Product Support
Posts: 3,745
Registered: ‎04-26-2010
Message 5 of 6 (98 Views)

# Re: Cylindric shell question

01-31-2012 07:57 AM in reply to: iassoniako

Keep in mind it is cylindrical shell :

Selfweight only:

﻿﻿

Flat plate 2,92x6,4 gives you 6 times bigger displacement:

Rafal Gaweda
Member
Posts: 3
Registered: ‎10-06-2011
Message 6 of 6 (95 Views)

# Re: Cylindric shell question

01-31-2012 08:11 AM in reply to: Rafal.Gaweda

thank you very much

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