Stress Concentration in Plates With Reinforced Cutouts arumugam Anna University, Chennai, India
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Transcript of Stress Concentration in Plates With Reinforced Cutouts arumugam Anna University, Chennai, India
![Page 1: Stress Concentration in Plates With Reinforced Cutouts arumugam Anna University, Chennai, India](https://reader036.fdocuments.in/reader036/viewer/2022082623/546637dbb4af9f645d8b4b77/html5/thumbnails/1.jpg)
STRESS CONCENTRATION IN PLATES WITH REINFORCED CUTOUTS
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INTRODUCTION STATEMENT OF THE PROBLEM
PARAMETERS
METHOD OF ANALYSIS
RESULTS
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STATEMENT OF THE PROBLEM
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PARAMETERS
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DETAILS PARAMETERS STUDIED
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Type
of
loading
series Axis ratio of elliptical cutout
Reinforcement pattern (above figure) Total number of cases solved
series R/r series Tmax/T
Normal Traction
1 1.00
1.1 1.33
1.1.1
1.1.2
1.1.3
1.1.4
1.50
2.00
2.50
3.00
120
1.2
1.3
1.4
1.5
1.6
1.50
1.75
2.00
2.50
3.00
For all cases Tmax/t varies as per series1.1
2
3
4
5
1.20
1.33
1.50
2.00
For all cases the variations of R/r and Tmax/t as per series 1
”
”
”
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Contd……
Shear loading`
6 1.00 All cases as per series 1 except R/r = 3.00
807 1.20 ”
8 1.33 ”
9 1.50 ”
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PLATE WITH A CIRCULAR CUTOUT UNDER COMBINED
LOADING
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METHOD OF ANALYSIS
F.E.M is adopted (C.S.T Element)
Symmetry :
Quarter plate of size 120*120*2.5 is analysed
SCF(K)=1+2(a/b) normal traction
SCF(K)=2(1+a/b) shear loading
To check F.E.M model
F.E.M solution agree with theoretical results
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S
C
F
a/b
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SCF Vs Tmax/T(various R/r)
Shear loading; SCF decreases as Tmax/T increases
SCF Vs Re
1. Normal traction.
2. Shear loading.
Used as charts
COMBINED INPLANE LOADING.
Structural components with cut-out Complex loading.
( max)A= 6.929
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Re=1/Vo ^n) dv Where
Vo = volume of plate removed for cutout
V = volume of plate in the reinforced region
R = equivalent radius.
N = 4.5
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CONCLUSIONS
S.C in elastic plates
Reinforcement provide in a single parameter(Re) related to S.C.F in all cases of loading
Reinforcement-highly effective-Re<25%
Marginal effective Re>50% can be used as charts
Re<25% R/r=2.0
25%<Re<50% R/r=3.0
Re>50% Theoretical /Experimental analysis carried out
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PUBLICATIONS1. Study on Fludity of Flyash based cement
slurry for SIFCON- Aroona Arumugam,Arumugam.E. A paper sent to I.C.J
2. Development of materials for SIFCON –Aroona Arumugam, Arumugam.E Seminar on Tamilnadu state council for science & Technology, Nagercoil, July 2000
3. Health monitory of Reinforced Concrete structures Distressed by corrosion –Jagadeesan.K, Santhakumar.A.R, Arumugam.E International conference in civil engineering, Mumbai November 2000
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Contd……4. Effect of rice husk ash in
cement mortar – Shantharam.J,Arumugam.E. A paper sent to ADCONST 2003,Annamalai University
5. Report on polymer modified concrete-Subramanium.S, Arumugam.E. A paper sent to ADCONST 2003,Annamalai University
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