Figure 12 XXIII: Applied pressure with fixed support
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*® Corresponding Author: Email ID: abhisheknaththakur@ gmail.com Combustion chamber was modeled using CATIA V5 which is shown in the given Figures: Table I: Design Parameters Figure 1. 2D Sketch of Combustion Chamber FEA analysis, large and complex shape domains are broken down into smaller domain called elements. This process is called Meshing. Each elements have certain nodes over which Ansys software calculate unknown variables using governing differential equation (GDE) and shown in Table II Combustion chamber created in CatiaV5 software is now ready to import in Ansys software for further analysis. 3. MESHING OF COMBUSTION CHAMBER: After the combustion chamber are modeled in CATIA V5 software, it is imported in Ansys 18.1 version software where FEA analysis will be done (Dayadi N et al., 2016). In EISULC LAE LVICSHI SS UL CUMIDUSUUT UC MAMIUeL 3.1 Boundary Condition: For Hoop stress or circumferential stress, pressure of 10.113 MPa (taken from above calculation) are applied on normal to inner face of cylinder. Displacement have been kept free in circumferential direction and restricted in other two direction, i.e in radial and longitudinal direction as analysis are done in cylinder coordinate. For Longitudinal stress, Pressure of 10.113 MPa are applied perpendicular to the plane of top surface of cylinder and kept the bottom surface fixed. This boundary condition has been kept same for all static structural analysis of different w/w alloy material (Venkatareddy et al. 2016, Saigakov E.A et al. 2014). Table IV: Comparison b/w simulated and theoretical result of 40% Al & 60%Mg Figure IV: Longitudinal stress of 50% Al - 50%Mg Figure V: Hoop stress of 50% Al - 50%Mg Table III Comparison b/w simulated and theoretical result of 50% Al & 50%Mg Figure [X: Hoop stress of 60% Al-40%Mg Figure VIII: Longitudinal stress of 60% Al-40% Mg Table V: Comparison b/w simulated and theoretical result of 60% Al & 40%Mg Table VI: Comparison b/w simulated and theoretical result of 30% Al & 70% Mg Figure XII: Longitudinal stress of 70% Al-30% Mg Figure XIII: Hoop stress of 70% Al - 30% Mg Table VII: Comparison b/w simulated and theoretical result of 70% Al & 30%Mg 4. STATIC THERMAL ANALYSIS OF COMBUSTION CHAMBER: The combustion chamber is a turbo-engine component where fuel, supplied by fuel feeding nozzles, is mixed with air which comes from the compressor. Structural static analysis shall be performed on combustion outer case for operating internal pressure and thermal loads (Dayadi N et al. 2016). Table VIII: Temperature distribution in combustion chamber in different alloys Figure XVI: 60%Al & 40%Mg 5.1 Thickness of piston head: 5. PROCEDURE FOR PISTON DESIGN: Pistons are made with characteristics that serve distinct purposes when an engine is running. The majority of the initial pressure and thrust generated by combustion is applied to the piston head or crown. Rapid directional shifts expose the piston pin area to a substantial amount of force. Additionally, it experiences thermal expansion as a result of heat being transferred from the piston's head to its body. More thermal expansion can occur in the piston pin area than in other places (Sroka Z. J. et al. 2012). The following is an illustration of the appropriate piston design procedures: a _ Where, 6g = Load stress and oc = Thermal stress. Table IX: Design Specification for Piston 5.2 Boundary condition for structural analysis of piston: Fixed support is given to the piston pin hole as the pistor will move up and down with the help of piston pin fixed at pin hole. Pressure of 1.246 MPa as calculated above i: applied on piston crown (Prabou R et al., 2018, Sonar D.K et al.,2015, Vaishali R.N et al., 2015, Szmytka F. et al 2015, Saigakov E.A, 2014). Figure XXI: Piston cross-section view Table X: Meshing Parameters for Piston Figure XXIV: Total deformation and Equivalent (Von-mises) stress for 50% Al -50% Mg Figure XXVI: Total deformation and Equivalent (Von-mises) stress for 40% Al-60% Mg Figure XXV: Total deformation and Equivalent (Von-mises) stress for 60% Al-40% Mg Figure XXVII: Total deformation and Equivalent (Von-mises) stress for 30% Al-70% Mg Figure XXVIII: Total deformation and Equivalent (Von-mises) stress for 70% Al-30% Mg Figure XXIX: Applied Heat flux on crown. 7.1 Thermal Analysis Results: Table XI: Temperature distribution in Piston head in different alloys 8. CONCLUSIONS: Based on observation of the study the following conclusions are made very carefully which are
