Structures GroupDelwar Hoque

Personal Responsibilities

• Structural analysis on compressor• Axial and radial compressors

• Design modifications• Administration

• Scheduling meetings• Funding applications• 3D prototyping

First Stage Rotor Structural Analysis

• Structural analysis• Rotation at 26,600 rpm• Pressure loading

• Fillet size increased to 1.5 mm

Material: PH13-8 MoYield strength: 1482 MPa

First Stage Stator

• Pressure loading from CFX• High stress concentrations

Second Stage Rotor

• Rotation at 26,600 rpm• Pressure loading• Fillet adjusted

Second Stage Stator

• Pressure loading from CFX• High stress concentrations

Impeller Structural Analysis• Rotation at 26,600 rpm• Pressure loading

Stator Coupling

Grooved Slots

Compressor and Shaft Coupling

• Three curvic grooves• Four bolt holes

Full Assembly

First Stage Coupling Stresses

First Stage Coupling Stresses

Maximum stress: 277 MPa

Second Stage Coupling Stresses

Second Stage Coupling Stresses

Impeller Coupling Stresses

Impeller Coupling Stresses

3D Prototyping

• Total funding = $1,900• Three weeks to print models• One week to assemble

3D Prototyping

• STL files• Triangular elements

• Tolerance of 0.2 mm for tight fit• Support materials

• Wax• Plastic

3D Prototyping

http://www.youtube.com/watch?v=tJgNVZlf4Fk&feature=related

Future Work

• Design modification • Stators• Impeller

• Vibration analysis• Lifing

Questions?