dynamic analysis phd thesis

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Design and Dynamic Analysis of Tension Leg Platform Wind Turbines

Bachynski, erin elizabeth, doctoral thesis.

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Dynamic Response Analysis of the Subway Station Under Moving Train Loads

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• First Online: 08 April 2020
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• Xiangyu Qu 11 ,
• Meng Ma 11 ,
• Weining Liu 11 &
• Linfeng Li 11  

Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 66))

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With the rapid development of urban mass transit systems, the issue of train-induced vibration has attracted attention. The train-induced ground vibration that occurs above or near a train station is different from that which occurs above the main line due to key differences in structure, as well as the layout of turnouts. In this paper, in order to model trainloads at the main line and turnout areas, we used a simplified two-dimensional train-track coupled model and an additional three-dimensional station-soil finite-infinite coupled model, and the latter created using the software ABAQUS. The station’s structural dynamic responses at both the turnout areas and the main line were calculated, and the time and frequency data were compared. Our results show that when the train passed through a track with turnouts, the acceleration response on the rails was ten times larger than when it passed through the main line, and the acceleration response on the sleepers was five times larger than when it passed through the main line. The acceleration response of the station plate exhibited the most dramatic decrease at frequencies between 3 and 20 Hz and between 60 and 100 Hz. Furthermore, the vibration through the plate decreased over entire frequency bands, and vibration through the pillars decreased only at frequencies above 50 Hz.

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School of Civil Engineering, Beijing Jiaotong University, Beijing, 100044, China

Xiangyu Qu, Meng Ma, Weining Liu & Linfeng Li

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Correspondence to Xiangyu Qu .

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Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA

Erol Tutumluer

School of Civil Engineering, Central South University, Changsha, Hunan, China

Xiaobin Chen

Yuanjie Xiao

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Qu, X., Ma, M., Liu, W., Li, L. (2020). Dynamic Response Analysis of the Subway Station Under Moving Train Loads. In: Tutumluer, E., Chen, X., Xiao, Y. (eds) Advances in Environmental Vibration and Transportation Geodynamics. Lecture Notes in Civil Engineering, vol 66. Springer, Singapore. https://doi.org/10.1007/978-981-15-2349-6_39

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DOI : https://doi.org/10.1007/978-981-15-2349-6_39

Published : 08 April 2020

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Three Minute Thesis (3MT®) is a competition for doctoral and research students to develop and showcase their research communication skills through brief, 3-minute presentations.

Penn's annual 3MT competition is sponsored by the Office of the Vice Provost for Education, with co-sponsorship and support from Career Services, the Graduate Student Center, and GAPSA. 

Penn 3MT is a University-sponsored speaking competition designed to showcase graduate student research in three-minute talks to a general audience. This is a terrific opportunity for graduate students engaged in substantive original research to develop communication skills and share their work with faculty, students, and staff from across the University.

• 3MT Information Sessions : November 2023 & January 2024
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• First Round Video Submissions Due: Saturday, March 2, 2024
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In addition to bragging rights, a prize of $1000 will be awarded to the first-place winner and $500 to both the second-place and audience choice winners. Winners will also have the opportunity to participate in regional and national 3 Minute Thesis competitions!

Meet the Finalists & Winners!

First place, $1000, kritika jha.

Kritika is a material chemistry Ph.D. student at the SAS and has dedicated her research to sustainable and intelligent packaging solutions. She is also a great fan of cooking, so she’s always cooking up a storm both in the lab and the kitchen,  with a mission to whip up eco-friendly packaging solutions. So, just think of her as a chef-scientist, where her ingredients aren't just spices and veggies, but also the stuff that could make tomorrow's packaging as compostable as an apple core, with a sprinkle of creativity and a dash of science. Now she’s going to tell you more about all that in her talk title “Nanosuperheroes: Who Can See the Unseen Dangers” 

Second Place, $500, Grace Simon

Grace is a PhD Candidate in the Management Department. Before embarking on her PhD journey, Grace spent five years working in the financial services industry. From supporting employees through bank robberies to leading a crisis communications team during the pandemic, Grace realized the central role of emotions in the workplace. In her research, she explores when and why supportive intentions at work can go right and wrong.  When she's not working on research, you can find her searching for the best ice cream in Philadelphia or perfecting her soft pretzel recipe. Now she’s going to tell you about her research in her talk titled “Putting Feelings into Words” 

Audience Choice, $500, Talayah Johnson

Talayah is Bioengineering Ph.D. student here at the University of Pennsylvania. Her journey started at Penn State University where she received her B.S in biology and Masters in biomechanics. Outside of research she enjoys volunteering at Philadelphia high schools as a way of encouraging minority students to pursue STEM degrees.  Now she’s going to tell you about her research in her talk titled “The Tendon’s Achilles Heel: How Reduced Loading Affects Limb Growth” 

Shelvey Swett

Shelvey is a second year PhD student in the Chemical and Biomolecular Engineering department. Her work focuses on carbon capture and storage. Outside of research, Shelvey loves reading, watching video essays, and doing hot yoga. Now she’s going to tell you about her research in her talk titled ‘Carbon capture? I hardly know her! Critical Mineral Supply and Carbon Dioxide Storage from Mining Waste’ 

Maya Moritz

Maya is a PhD student in the Criminology department at Penn. She grew up in New Jersey and studied labor and historical economics in Scotland, Canada, and Germany. During her studies, she listened to way too many true crime podcasts and, as a result, decided to return home and examine a different labor market- crime. As a PhD student in criminology she tries to keep her work on the brighter side by studying the crime-fighting effects of art, lighting, and the power of community. Now she’s going to tell you about her research in her talk titled “A Picture Worth A Thousand Words: The Effects of Murals on Crime ” 

Chris Johnson

Chris is a doctoral candidate in chemical and biomolecular engineering, with a focus on deciphering the physics behind new materials for energy technology. He has had work published in scientific journals such as Polymer, Advanced Materials Interfaces, and Chemical Communications. He was the 2020 winner of the Elda Wollaeger Gregory poetry award at the University of Delaware, and spends his free time playing with his cat Poe. Now he’s going to tell you about his research in his talk titled “Mission Ion-possible Charges in Motion" 

Natalia (Nati) Aponte Borges

Natalia is a graduate researcher, bilingual STEM educator, and artist. She obtained her B.S. in Biology from the University of Puerto Rico, Río Piedras and is currently a Biology PhD Candidate in the Schmidt Lab. She is broadly interested in the neurobiology of behavior, known as neuroethology. Her work focuses on the neural mechanisms that control courtship behaviors in songbirds. She studies brown-headed cowbirds, which have an elaborate song and display during courtship. Outside of research, she is passionate about community, science literacy, disability justice, and teaching. Along with birds, she loves photography, sewing, and going to the beach. Now she’s going to tell you about her research in her talk titled “The Neural Command of Courtship: How the Bird Brain Orchestrates an Elaborate Wingspread” 

Pulkit Khandelwal

Pulkit is a 5th year PhD student in the department of Bioengineering. Previously, he completed his masters in computer science at McGill University in Montreal. Pulkit's research interests lie in biomedical image analysis using artificial intelligence and shape analysis to understand how neurodegenerative diseases, such as Alzheimer’s, spread in the brain using postmortem human brain MRI. In his spare time, he likes to read poetry, literature, listen to Greek mythology podcasts, nerd out on coffee, enjoy foreign language independent movies, and lately he has been interested in rare books and book binding! Now he’s going to tell you about his research in his talk titled “Alzheimer's disease: cutting the brain open, literally!” 

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Register for Round 1 Video Submission

The 3MT competition will teach you how to communicate effectively to specialists and non-specialists alike, preparing you to present your research at scholarly conferences and to take part in both academic and professional job markets.

Professional Development:  Penn 3MT is a great opportunity for graduate students to practice sharing their original research to general audiences. Participants have the opportunity to attend workshops and receive group and one-on-one coaching to  develop oratorical skills, dynamic deliveries, and compelling content  when presenting their academic research.

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Active PhD, Professional Doctorate Research (program composed of at least 2/3 research and eligible for Research Training Program (RTP)), and full-time Masters candidates who have successfully passed their confirmation milestone (including candidates whose thesis is under submission) by the date of their first presentation are eligible to participate in 3MT competitions at all levels. Graduates are not eligible.

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To enter, you must submit a three-minute video of your presentation by 11:59 p.m. (local time) on March 2, 2024.

Please register at the blue button at the top of the page  if you are interested in participating . Be sure to read through the Rules and Guidelines also before submitting your videos!

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Students may submit their slide and video anytime before Saturday, March 2, 2024  for feedback. You can also request a 1:1 session during this time for immediate feedback or to go over your presentation with the Associate Director.

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A  campus-wide competition between the finalists will be held March 22, 2024. A reception will be held after the competition.

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A panel of non-specialist faculty and staff judges will evaluate student presentations. Presentations will be evaluated based on clarity, comprehension, content, engagement, and communication.

Everyone who submits a video will receive a gift for participating! Please fill out the interest form above if you plan on submitting a video so we can collect your contact information. Judges will select a first ($1000) and second-place ($500) winner at the live competition. There will also be an audience choice ($500) winner.

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Visual submission :

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• The presentation  begins  at the moment the speaker engages with the audience (if they start with a hand clap, a gesture, or any other such engagement, prior to speaking, the clock begins at that time; if there is no such engagement the clock starts when the student begins speaking).
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Want some help getting started? In need of Inspiration? Check out the resources below!

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