analysis of a nulling yaw probe me 450: computer aided engineering analysis instructor: dr. nema...
DESCRIPTION
Introduction Apparatus to observe pressure and flow angle of annular flow in turbine engine 462 project added component to allow for flow yaw angle measurement Main area of concern is support for motorTRANSCRIPT
Analysis of a Nulling Yaw Probe
ME 450: Computer Aided Engineering Analysis
Instructor: Dr. Nema
Group members:
Billy Holland, Alan Koers, Allison Heying
Objectives
Determine if stress or displacement will negatively affect function of device
Study vertical position of motor
Study horizontal position of motor
Study probe when exposed to air flow
Introduction
Apparatus to observe pressure and flow angle of annular flow in turbine engine
462 project added component to allow for flow yaw angle measurement
Main area of concern is support for motor
Complete Assembly
Probe
Motor
Track
Motor Support Housing
Rack
Theoretical Background
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Solid 92 (Tetrahedral Solid): 10 Nodes, 3-D Space, DOF: UX, UY, UZ
Is the WORKBENCH default element
Model Details: Sub Assembly
Element Type: SOLID92
Elements: 2579 Nodes: 10004
Model Details: Sub Assembly
Model grounded at mounting holes in tracks
Moments applied to motor support mounting holes
Model Details: Yaw Probe
Element Type: SOLID92
Elements: 2964 Nodes: 5859
Model Details: Yaw Probe
Model grounded at probe base
Pressure due to wind speed applied surface of probe
Stress at Vertical Orientation
Displacement at Vertical Orientation
Stress at Horizontal Orientation
Stress at Horizontal Orientation (bottom)
Displacement at Horizontal Orientation
Stress in Probe
Displacement of Probe
Results
12 O'clock 3 O'clock % Change Max Deformation (meters) 1.27E-06 6.38E-07 49.8 Max V-M Stress (pa) 8.31E+05 8.30E+05 0.1 Max V-M Strain (m/m) 2.28E-05 1.11E-05 51.3 Max Principal Stress (pa) 8.65E+05 8.10E+05 6.3 Max Principal Strain (m/m) 2.04E-05 1.11E-05 45.6
tensile yield (Pa) Tensile Ultimate Stength (Pa) Poisson's
Ratio aluminum 2.80E+08 3.10E+08 0.33 brass 2.50E+08 3.50E+08 0.35 plastic 2.50E+07 3.30E+07 0.42
Impact Statement
Probe apparatus will be safe for users
Knowledge of flow angle and pressure in turbine engine will allow for improvements
Conclusions
Design will have no problems due to stress or deformation
Factor of safety is at least 40
Questions
SourcesFinite Element Analysis by Saeed Moaveni
Introduction to Fluid Mechanics by Robert Fox Mechanics of Materials by John Dewolf