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Appendix D: Evaluation of Transit Bus Operator Seats
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Table of Contents
D.~. Introduction / Background..............
D.2. Problem Statement..................
D.3. Equipment..e..............................
D-1
...D-3
D.4. Procedure e e
D.~. Results / Discussion..e....................
D.6. Conclusion
References ·~------.e--~-~------~------.eeeeee---.
Sub-appendix DI: Figures.......................
D-4
D-IO
D-19
D-22
D-23
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List of Figures
Figure D5.1 a: SEAT TO for 1 " Random Chuck Holes (Durability Twirls)
Figure D5. lb: SEAT % for Economy Track
Figure D5.2a: Lower Mass Transmissibilities for Durability Track
Figure D5.2b: Upper Mass Transmissibilities for Durability Track
Figure D5.3a: Lower Mass Transmissibilities for Economy Track
Figure D5.3b: Upper Mass Transmissibilities for Economy Track
Figure D-l . l: Bus Photo
Figure D-1.2a: Seat 1
Figure D-1.2b: Seat 1 Suspension Linkage Dimensions
Figure D-1.3a: Seat 2
Figure D-1.3b: Seat 2 Suspension Linkage Dimensions
Figure D-1.4a: Seat 3
Figure D-1.4b: Seat 3 Suspension Linkage Dimensions D-30
Figure D.1 -5a: Seat 4 D-31
Figure D-1.5b: Seat 4 Suspension Linkage Dimensions D-32
Figure D-1.6: Seat 5 D-33
Figure D-1.7a: Seat 6 D-34
Figure D-1.7b: Seat 6 Suspension Linkage Dimensions D-35
Figure D-1.8a: Seat 7 D-36
Figure D-l.8b: Seat 7 Suspension Linkage Dimensions D-37
Figure D-l.9: Universal Seat Mount D-38
Figure D-l.10: Accelerometer Locations D-39
Figure D- 1.11 : Ride Quality Simulator in Seat D-40
Figure D-1.12: PTI Durability Track D-41
Figure D-1.13: Element ~ - Modified High Crown Intersection D-42
Figure D-1.14: Element 9 - Frame Twist D-43
Figure D-1.15: Elements 10 & 11 - Modified Staggered Bumps and Railroad
. D-13
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. D-17
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Crossing D-44
Figure D-.16: Element 12 - Modified l" Random Chuck Holes D-45
Figure D-1.17: Modified 3/4" Chatter Bumps D-46
Figure D-l .18: Modified 4" Chuck Hole D-47
Figure D-l.l9: PT] Economy Track D-48
Figure D-1.20: Floor RMS, RMQ, VDV for 1" Random Chuck Holes D-49
Figure D- 1.2 1: Under Cushion RMS, RMQ, VDV for 1" Random Chuck Holes D-49
Figure D-1.22: Dummy Frame RMS, RMQ, VDV for l" Random Chuck Holes D-50
Figure D-1.23: Lower Mass RMS, RMQ, VDV for 1" Random Chuck Holes D-50
Figure D-1.24: Upper Mass RMS, RMQ, VDV for 1" Random Chuck Holes D-51
Figure D-1.25: Floor RMS, RMQ, VDV for Economy Track D-52
Figure D-1.26: Under Cushion RMS, RMQ, VDV for Economy Track D-52
Figure D-1.27: Dummy Frame RMS, RMQ, VDV for Economy Track D-53
Figure D-1.28: Lower Mass RMS, RMQ, VDV for Economy Track D-53
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Figure D-1.29:
Figure D- ~ .30: PSD's, Seat #l, Durability
Figure D-~.31: Transmissibilities~ Seat #] DurabilitY
Figure D-.32:
Figure D-.33: Transmissibilities, Seat #2, Durability
Figure D-.34: PSD's, Seat #3, Durability
Figure D-.35: Transmissibilities, Seat #3, Durability
Figure D-.36: PSD's, Seat #4, Durability
Figure D-.37: Transmissibilities, Seat #4, Durability
Figure D-~.38: PSD's, Seat #5, Durability D-63
Figure D-.39: Transmissibilities, Seat #5, Durability D-64
Figure D-.40: PSD's, Seat #6, Durability D-65
Figure D-~.41: Transmissibilities, Seat #6, Durability D-66
Figure D-.42: PSD's, Seat #7, Durability D-67
Figure D-.43: Transmissibilities, Seat #7, Durability ~ be
Figure D-.44: Seat i Average PSD Functions, Economy D-69
Figure D-.45: Seat ~ Average Transmissibilities, Economy D-70
Figure D-.46: Seat 2 Average PSD Functions, Economy D-71
Figure D-.47: Seat 2 Average Transmissibilities, Economy D-72
Figure D-~.48: Seat 3 Average PSD Functions, Economy D-73
Figure D-.49: Seat 3 Average Transmissibilities, Economy
Figure D-.50: Seat 4 Average PSD Functions, Economy
Figure D-!.5I: Seat 4 Average Transmissibilities, Economy
Figure D-.52: Seat 5 Average PSD Functions, Economy
Figure D-.53: Seat 5 Average Transmissibilities, Economy
Figure D-.54: Seat 6 Average PSD Functions, Economy
Figure D-.55: Seat 6 Average Transmissibilities, Economy
Figure D-.56: Seat 7 Average PSD Functions, Economy D-~!
Figure D-.57: Seat 7 Average Transmissibilities, Economy D-82
Upper Mass RMS~ RMQ, VDV for EconomY Track..................
........ D-54
D-55
. D-56
D-57
D-58
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D-62
- 7 - - 7
PSD's. Seat #2. Durabilitv..................
-, -, ~- - - - ,
.D-74
. D-75
. D-76
D-77
. D-78
. D-79
D-80
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List of Tables
Table D4. I: Key for Seat Numbering
Table D4.2: Summary of Data Analysis
Table DS. I: Seat Comparison...........
Table D6. I: The Ideal Seat
D-6
D-9
. D-10
D-21
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Representative terms from entire chapter:
chuck holes
