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SJ MEPLA Calculation Protocol: Geometry:: Project: Frameless GLASS - GLASS 2 15-02-2024

This document contains the results of a structural analysis of a frameless glass balustrade using SJ MEPLA software. The balustrade is modeled as a quadrangle with fixed and simply supported edge supports and spring supports. The analysis found a maximum displacement of 7.86mm, which is less than the allowable deflection of 58.3mm. It also found a maximum principal stress of 9.83MPa, which is less than the allowable stress of 36.5MPa. Therefore, the results indicate the balustrade design is structurally safe based on the modeling assumptions.

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205 views6 pages

SJ MEPLA Calculation Protocol: Geometry:: Project: Frameless GLASS - GLASS 2 15-02-2024

This document contains the results of a structural analysis of a frameless glass balustrade using SJ MEPLA software. The balustrade is modeled as a quadrangle with fixed and simply supported edge supports and spring supports. The analysis found a maximum displacement of 7.86mm, which is less than the allowable deflection of 58.3mm. It also found a maximum principal stress of 9.83MPa, which is less than the allowable stress of 36.5MPa. Therefore, the results indicate the balustrade design is structurally safe based on the modeling assumptions.

Uploaded by

muralidharan10901
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Project: frameless GLASS - GLASS 2 15-02-2024 Page: 1

SJ MEPLA Calculation protocol:

Geometry:

Basic form: quadrangle


Corner x y
mm mm
1 0.00 0.00
2 1310.00 0.00
3 1310.00 3500.00
4 0.00 3500.00

Supports:

Edge supports:
from-to kind of supports
1 2 w,phi,theta : fixed - u,v : free (simply supported and clamped)
3 4 w,phi,theta : fixed - u,v : free (simply supported and clamped)

Spring supports:
----- position ---- ------------ rigidity ---------
Package layer x y z Cx Cy Cz
mm mm mm N/mm N/mm N/mm
1 1 0.00 0.00 0.00 1.00000e+000 1.00000e+000 0.00000e+000
1 1 1310.00 0.00 0.00 0.00000e+000 1.00000e+000 0.00000e+000
2 1 0.00 0.00 0.00 1.00000e+000 1.00000e+000 0.00000e+000

This protocol was created using SJ MEPLA. Copyright 2000-2005 by SJ Software GmbH Aachen, Germany.
Project: frameless GLASS - GLASS 2 15-02-2024 Page: 2

2 1 1310.00 0.00 0.00 0.00000e+000 1.00000e+000 0.00000e+000

Layers:

Mechanical properties:
Package layer e-mod. poiss thickn. density alpha t dT prestressing
N/mm² - mm kg/m³ 1/K K N/mm²
2 1 70000.00 0.23 8.00 2550.00 1.0000e-005 0.00 37.00
1 3 70000.00 0.23 8.00 2550.00 1.0000e-005 0.00 37.00
1 2 2.70 0.23 1.52 1070.00 1.0000e-005 0.00 0.00
1 1 70000.00 0.23 8.00 2550.00 1.0000e-005 0.00 37.00

Intermediate pane space:


Package thick int.-pressure dT gamma
from-to mm N/mm² C 1/K
1 2 16.00 1.01000e-001 0.00 3.67400e-003

External pressure:
pressure dH (difference of height)
N/mm² m
1.01000e-001 0.0

Loads:

Line loads:
Package -- from -- --- to --- qx qy qz
x y x y N/mm N/mm N/mm
1 0.00 1100.00 1310.00 1100.00 0.00 0.00 0.73
This protocol was created using SJ MEPLA. Copyright 2000-2005 by SJ Software GmbH Aachen, Germany.
Project: frameless GLASS - GLASS 2 15-02-2024 Page: 3

2 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Face loads:
(constant distributed):
Package pressure
N/mm²
2 0.00000e+000
1 0.00000e+000

Calculation approaches:

small deflections, linear


static calculation

Calculation results:

Minimum and maximum displacements (at nodes):


- position- displacement
Package x y w
mm mm mm
2 0.00 0.00 0.00 (min)
1310.00 1750.00 7.66 (max)
1 0.00 0.00 0.00 (min)
1310.00 1400.00 7.86 (max)

This protocol was created using SJ MEPLA. Copyright 2000-2005 by SJ Software GmbH Aachen, Germany.
Project: frameless GLASS - GLASS 2 15-02-2024 Page: 4

Max principal stress (in gaussian points):


Package layer x y stress
mm mm N/mm²
2 1 922.55 39.45 5.39
1 3 1091.67 39.45 9.13
1 1 1091.67 39.45 9.51

Intermediate pane space:


Package pressure
from-to N/mm²
1 2 1.01058922e-001

Springs: (order as defined above)


Package layer u v w Fx Fy Fz
mm mm mm N N N
1 1 0.00 -0.00 0.00 0.00 -0.00 0.00
1 1 -0.00 -0.00 0.00 0.00 -0.00 0.00
2 1 0.00 0.00 0.00 0.00 0.00 0.00
2 1 0.00 0.00 0.00 0.00 0.00 0.00

This protocol was created using SJ MEPLA. Copyright 2000-2005 by SJ Software GmbH Aachen, Germany.
Max. Displacement Contour

Allowable deflection of Glass Balustrade = L/60

= 3500/60 = 58.3mm

= 58.3mm > 7.86mm. Hence Safe


Max. Stress Contour

From the above, the maximum stress is 9.83 MPa < 36.5 MPa. Hence Safe

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