analysis of a nulling yaw probe

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Analysis of a Nulling Yaw Probe ME 450: Computer Aided Engineering Analysis Instructor: Dr. Nema Group members: Billy Holland, Alan Koers, Allison Heying

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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 - PowerPoint PPT Presentation

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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 SupportHousing

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