ISSN (online) : 2395 - 7549

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Design Modification and Analysis of Fixture to Accommodate Different Steam Turbine Casing


Dipali Pandya , Assistant Professor, Mechanical Engineering Department, Navrachna University , Baroda, India. ; Dhaval B. Shah, Institute of Technology, Nirma University, India; Ravi Soni, Institute of Technology, Nirma University, India


Fixture design, Static structural analysis, Harmonic analysis, Finite element method


A fixture is a special purpose tool used to accurately and stably locate the work piece during machining process. Proper fixture design improves the quality, production of parts and also facilitates the interchangeability of parts that is prevalent in much of modern manufacturing. A machining fixture has two basic functions are to locate the component at a right position in relation with cutting tools and to hold the component tightly. Lack of rigidity causes vibration which is very dangerous. In the present study an attempt has been carried out to make universal type of fixture which is capable to handle different steam turbine casing having geometry changing attributes. Modeling has been carried out of existing fixture using solid modeling software. Based on the available data of existing fixture, force, vibration and control point calculations have been carried out analytically. Static structural and harmonic analysis have been carried out using finite element software. The high vibration and stresses have been found in existing fixture design, which will be eliminated by redesigning of the same. It has been found that frequency has been increased whereas equivalent stress and deformation has been reduced in modified design of fixture.

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Manuscript Id :J4RV2I2009
Published in :Volume : 2, Issue : 2
Publication Date: 01/05/2016
Page(s): 14-21
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2395 - 7549



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