simulation case study

7/24/2019 Simulation Case Study

1/13

his Case Study report covers

he Simulation Details of

model of KANSAS OVEREAD

!A"K!A#S$ under a statically

ssumed load%

Talha #ousuf

Static "oadAnalysis ofKansas

CityOverhead!al&'a s


2/13

1 DESCRIPTION:------------------------------------------------------------------------------------2

(%( OR)*)NA"DES)*N+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,-

(%- .A/R)CATEDDES)*N+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,-

2 MODEL INFORMATION: ----------------------------------3

3 METHODOLOGY:----------------------------------------------------------------------------------4

4 STUDY PROPERTIES:----------------------------------------------------------------------------4

5 UNITS:----------------------------------------------------------------------------------------------4

6 VISUAL INFORAMTION ABOUT MODEL:----------------------------------------------------5

0%( /R)D*ES122ORT)N*DES)*N+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,30%- 4ODE"1SED.ORS)41"AT)ON+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,3

0%5 STAT)C"OADSA22")ED+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0

0%6 4ES)N*+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0

0%3 S)41"AT)ONRES1"TS+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7

6.5.1 Stress analysis:----------------------------------------------------------------------------------------7

6.5.2 displacement analysis:------------------------------------------------------------------------------8

6.5.3 strain analysis:----------------------------------------------------------------------------------------8

7 MATERIAL PROPERTIES:-----------------------------------------------------------------------9

LOADS AND FI!TURES:-------------------------------------------------------------------------9

9 MESH CONDITIONS FOR SIMULATION:---------------------------------------------------1"

1" MESH RESULTS:--------------------------------------------------------------------------------1"

11 FINAL TABULATED RESULS FROM SIMULATION:---------------------------------------11

((%( .ORCES+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,((

((%- 4O4ENTS+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,((

((%5 STRESSES+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,((

((%6 D)S2"ACE4ENTS+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,((

((%3 STRA)NS+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,((

T#$%&

O'C()*&

)*


3/13

1 DESCRIPTION:'o Kansas City Overhead !al&'ays collapsed o'in8 to a

serious structural failure% /ased on the case study report of

that incident9 is produced a model of a portion of that :rid8e

and is simulated in the Solid'or&s%

TThe suspended 'al&'ays in the yatt Re8ency otel in Kansas Citycollapsed :ecause a contractor fa:ricated the connections for the'al&'ays in a manner di;erent from the ori8inal desi8n%These 'ere suspension type 'al&'ays9 vertically connected via -6ft

lon8 threaded rods% Second and .ourth 'al&'ays collapsed in the

accident%

1+1 ORIGINAL DESIGN:

)n the ori8inal desi8n9 'al&'ays at the second and fourth


4/13

2 MODEL INFORMATION:

B,./& S0(,*)/ B M(.&%

S(%. B(.&

P#,* N#& T,*&. AP,(&,*& '(, (.&%

.&)()M#*&,#% U&.

L(&, $

S(%. B(.

L&)/*8:3""

M#:"+22 /

&/8*:2+2" N AST4 A,50 Steel

0&, $

S(%. B(.

L&)/*8:3""

M#:"+22 /

&/8*:2+2" N AST4 A,50 Steel

S0&)() ,(.

S(%. B(.

L&)/*8:11"

M#:"+"12" /

&/8*:"+11 N

AST4 A,50 Steel

? for the defected

Rod9 material is!rou8ht SS


5/13

3 METHODOLOGY:)n the ori8inal accident9 there 'as a wrongly designed linkin the :eam

which was real cause o ailure so to &eep model simple9 as an analo8y

to this9 three suspension rods of A-36 material are used while

as a symbol of DEFECTED PIECE, the 4th

suspension rod is

made of !"#$%T &tainless &teel'

All the loadin8s applied are assumed%

Simulation is meant to sho'9 how ailure would ha!e started"

4 STUDY PROPERTIES:.ollo'in8 ta:le ta:ulates9 'hich features 'ere included in simulation%

5U

NITS:

U)* *&: S) @4KS

L&)/*8;D%#


6/13

6+2 MODEL USED FOR SIMULATION:

As :eams are main su:Fect of concern so simulation 'as performed for:eams+

FIGUREIII MODELUSEDFORSIMULATION


7/13

6+3 STATIC LOADS APPLIED:.orce on each :eamG 3H&N

The suspension rods are >Ied at theTO2%

6+4 MESHING:

FIGUREIV-STATICLOADING

FIGUREV-AFTERMESHING


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6+5 SIMULATION RESULTS:There are three types of results9 :ein8+

o Stress analysis.#showing stress distri$ution%

o Displacement analysis%#showing the displacement rom original

point%o Strain analysis%#showing strain distri$ution%

6'(') &T!E&&A*A+&I&

This 8ives the idea9 ho' the :rid8e :eam 'ould li&ely to have failed%

Althou8h in the real disaster9 the wrongly designed link ailed thus

causing the whole system to collapse.

The 'ron8

The

:rea&in8

ro:a:l

FIGUREVI-STRESSANALYSIS@ 5"N APPLIEDONEACHBEAM


9/13

6'('. DI&P+ACE/E*TA*A+&I&

FIGUREVII-DISPLACEMENTANALYSIS

6'('3 &T!AI*A*A+&I&

FIGUREVIII-STRAINANALYSIS


10/13

7 MATERIAL PROPERTIES:

M(.&% R&'&,&)


11/13

LOADS AND FI!TURES:

F*0,&

)#&F*0,& I#/& F*0,& D&*#%

F#


12/13

1" MESH RESULTS:

T(*#% N(.& 5H00

T(*#% E%&&)* (-6-M#0 A&


13/13

11+5STRAINS:.rom .i8ure V))),strain analysis

N#& T& M) M#Strain

ELuivalent Strain -%-5 e,3 H%H3

E).

O'R&(,

*

simulation case study

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