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12 results on '"Velagapudi, Sai Praveen"'

2. Validity of Using Lab Based Set-Ups for Evaluation of Static Factors in Seating Comfort of Motorcycles

Author

Velagapudi, Sai Praveen, Ray, Gaur Gopal, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Bagnara, Sebastiano, editor, Tartaglia, Riccardo, editor, Albolino, Sara, editor, Alexander, Thomas, editor, and Fujita, Yushi, editor

Published
2019
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5. Influence of Driving Duration on Static Factors of Seating Comfort in Motorcycles

Author

Gaur Gopal Ray and Velagapudi Sai Praveen

Subjects
Subjective rating, Duration (project management), Psychology, Automotive engineering
Abstract

The driving duration is an important consideration for the design and development of automobile seats. Seating comfort consists of two factors, static and dynamic, and research on passenger cars shows both these factors are influenced by driving duration. However there is limited research to understand the influence of driving duration on seating comfort in motorcycles. This study investigates the influence of driving duration on static factors of seating comfort in motorcycles. Motorcycles from India that are typically used for commuting are considered in this study. The study is carried out with the help of 13 male volunteers and involves subjective rating of seating comfort in a static lab based set up of the motorcycle. The evaluation is carried out for 60 min and the rating of seating comfort is obtained after every 10 min. The data is analysed statistically using ANOVA. The results show that there is a significant influence of time on seating comfort in motorcycles (p < 0.05). The seating comfort reduces with time, however the comfort rating saturates after a duration of 30 min to remain fairly constant. The results of this study provide useful inputs for further research on seating comfort in motorcycles.

Published
2018

8. The Influence of Static Factors on Seating Comfort of Motorcycles: An Initial Investigation.

Author

Velagapudi, Sai Praveen, Ray, Gaur Gopal, Toccafondi, Giulio, and Parlangeli, Oronzo

Subjects
*AUTOMOBILE seats, *MOTORCYCLES, *RAILROAD passenger cars, *RATINGS of hospitals, *LABORATORIES, *ANALYSIS of variance, *AUTOMOBILE exhibitions
Abstract

Objective: The aim of the current study is to examine the influence of static factors on overall seating comfort in motorcycles and validate the use of static lab-based setups for evaluating seating comfort in motorcycles.Background: Seating comfort in automobiles has two factors, static and dynamic. Research on seating comfort of passenger cars has shown that when the magnitude of vibration reaching the seat is low, comfort is largely determined by static factors. Studies have also validated the use of static lab-based setups for research on seating comfort in passenger cars. Static lab-based setups are easy to develop, provide a controlled environment, and efficient for experimental research. The riding posture, mass distribution, and dynamics of a motorcycle differ from a passenger car and warrant further investigation to extend the results from the research on passenger cars.Method: The study compares subjective rating of seating comfort and objective measurement of seat interface pressure in two test conditions: a static lab-based setup and actual driving on a flat test track where the magnitude of vibration reaching the seat is low. The vibration at the seat is measured for the driving trial. A group of 18 male volunteers from TVS Motor Company participated in the study, and two motorcycles from the economy/executive segment of India are used in the study. The subjective ratings are analyzed statistically using analysis of variance (ANOVA) and Pearson's correlation. The vibration data are analyzed as per ISO 2631-1 to calculate the frequency-weighted acceleration, aw.Results: The results show that there is no significant difference between the two test conditions either in the objective measurements or in the subjective rating of comfort. There is also a statistically significant correlation between the subjective ratings of seating comfort in static lab-based setup and actual riding (r = .77, p < .01, n = 36). The mean aw at the seat while driving in the test track used in this study is 0.2 m/s2.Conclusion: Static factors have a significant influence on seating comfort in motorcycles. When the vibration reaching the seat is low (aw ≤ 0.2 m/s2), seating comfort is largely determined by the static factors. The use of static lab-based setups for evaluating static factors of seating comfort in motorcycles is validated.Application: The results of this study enable further research to understand the human criterion for seating comfort in motorcycles using static lab-based setups which are easier to develop and provide controlled environment that is essential for any research. [ABSTRACT FROM AUTHOR]

Published
2020
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