Crack Analysis of Enclosure Under Bursting Pressure
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Pune, May 6, 2014 The Westin Pune Koregaon Park Bangalore, May 09, 2014 ITC Gardenia New Delhi, May 22, 2014 LeMeridian Abstract fo r 2 14 ANSYS Convergence Conference Title of the Paper: CRACK ANALYSIS OF ENCLOSURE UNDER BURSTING PRESSURE Name of the Organization Type of Physics Industry ABB INDIA LIMITED Structural Mechanics Industrial Equipment and Rotating Machinery Names of the Authors: NAVINCHANDRA BHATT Email: [email protected] Abstract: This analysis was carried out to predict the crack and hence failure for Disconnector/Earthing Switch enclosure used in Gas Insulated Switchgear (GIS). All Enclosures in GIS are under high pressure of Gas and during short circuit or other failures this pressure this may rise exponentially, hence every GIS Enclosure is type tested thoroughly for very high factor of safety. Any failure could be disaster both for switchgear and operator involved (considered fatal) Normal way is to predict the von mises stress value below the Ultimate stress value of material and considered to be safe. For this task we tried to predict the crack which may generate due to higher pressure and tried to predict the failure resulting. Assumptions involved the crack size and possibility due to nonvisible size to naked eyes during mass production, nonlinear behaviour of aluminium alloy, shape of crack size, fracture toughness value as available for nearest material. Successfully able to predict areas where crack can occur and propagate. The model is under manufacturing stage after detail design phase, by end of December it is predicted to be tested in Germany. This is done in simple steps so could be implemented in
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crack
Transcript of Crack Analysis of Enclosure Under Bursting Pressure
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Pune, May 6, 2014 The Westin Pune Koregaon Park
Bangalore, May 09, 2014 ITC Gardenia
New Delhi, May 22, 2014 LeMeridian
Abstract for 2014 ANSYS Convergence Conference
Title of the Paper:
CRACK ANALYSIS OF ENCLOSURE UNDER BURSTING PRESSURE
Name of the Organization Type of Physics Industry
ABB INDIA LIMITED Structural Mechanics Industrial Equipment and
Rotating Machinery
Names of the Authors: NAVINCHANDRA BHATT
Email: [email protected]
Abstract:
This analysis was carried out to predict the crack and hence failure for Disconnector/Earthing
Switch enclosure used in Gas Insulated Switchgear (GIS). All Enclosures in GIS are under high
pressure of Gas and during short circuit or other failures this pressure this may rise
exponentially, hence every GIS Enclosure is type tested thoroughly for very high factor of safety.
Any failure could be disaster both for switchgear and operator involved (considered fatal)
Normal way is to predict the von mises stress value below the Ultimate stress value of material
and considered to be safe. For this task we tried to predict the crack which may generate due to
higher pressure and tried to predict the failure resulting.
Assumptions involved the crack size and possibility due to nonvisible size to naked eyes during
mass production, nonlinear behaviour of aluminium alloy, shape of crack size, fracture toughness
value as available for nearest material.
Successfully able to predict areas where crack can occur and propagate.
The model is under manufacturing stage after detail design phase, by end of December it is
predicted to be tested in Germany. This is done in simple steps so could be implemented in
-
Pune, May 6, 2014 The Westin Pune Koregaon Park
Bangalore, May 09, 2014 ITC Gardenia
New Delhi, May 22, 2014 LeMeridian
future works easily and efforts could be saved in practical and simulation approach. Have taken
help of ANSYS Engineers :Siva kumar
