• V Raviteja Behera
• R.D.V.Prasad
• M.Sailaja
• Dr.Yathish Ramena

In this work, a sector model of a bolted flange is modeled in the Design Modeler of ANSYS Workbench. Model is parameterized so that by changing its geometric parameters, an updated geometric model is auto generated. The FE model is given necessary contacts, BCs,structural and thermal loads. Since a sector is considered, zero displacements are given in its hoop direction and on one cut face of sector. An axial pull is given on the other cut face of the sector. Bolt pre-load is applied along the axis of the bolt and a uniform temperature is presumed. Now the model is solved and the stresses are plotted.In the Design Explorer of workbench, optimization is carried out through the concept of Design of Experiments and Response surface. In the design explorer input and output parameters are defined and bounds(upper and lower) are specified to the defined input parameters. Within the specified bounds, DOE generates the best possible design points along with the corresponding output parameter values. A response surface is then generated which depicts the variation of o/p parameter with changing i/p parameter values. Then, three most promising design candidates are being generated by the optimization cell of which one best design candidate is chosen as per the goal of optimization. The selected design candidate is solved and the results are evaluated. It’s observed that the maximum stress values have been declined after design exploration.

Bolted joint, Pre-load, Design of Experiments, i/p&o/p parameters, stress.

"OPTIMIZATION OF BOLTED JOINT OF A GAS TURBINE CASING USING DOE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.1046-1052, MAY-2018, Available :http://www.jetir.org/papers/JETIR1805597.pdf

"OPTIMIZATION OF BOLTED JOINT OF A GAS TURBINE CASING USING DOE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp1046-1052, MAY-2018, Available at : http://www.jetir.org/papers/JETIR1805597.pdf