Academic literature on the topic 'Bicycles – Design'

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Journal articles on the topic "Bicycles – Design"

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Paudel, Milan, and Fook Fah Yap. "Development of an improved design methodology and front steering design guideline for small-wheel bicycles for better stability and performance." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 234, no. 3 (August 5, 2020): 227–44. http://dx.doi.org/10.1177/1754337120919608.

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The maneuverability and compactness of small-wheel and folding bicycles are greatly appreciated. Nonetheless, the performance of these small-wheel bicycles as compared to the big-wheel bicycles has always been questioned. They are often blamed for being less stable, wobbly, or twitchy. It is still unclear how the performance of the small-wheel bicycle designs can be improved. Both small- and big-wheel bicycles are designed with similar ergonomics; therefore, the focus has been on the front steering design. The steering design parameters of 91 big-wheel and 27 small-wheel bicycles were compared, bearing in mind the available front steering design guidelines to understand: (1) the influence of big-wheel bicycle’s frame design on small-wheel bicycles and (2) most common range of design parameters used in current bicycle designs. The analysis showed a strong influence of current big-wheel bicycle design practice on front frame parameter selection of small-wheel bicycles. Furthermore, the self-stability comparison over the most common design range confirmed the lesser stability in the current small-wheel bicycle designs at normal riding speed. However, it was also found that the lesser stability was not the result of small wheels per se, but rather owing to an inadequacy in the current design approach to addressing the complex influence of reducing wheel size and bicycle frame design on its stability and performance. Therefore, an improved design methodology was adopted by incorporating the bicycle dynamics into the current design approach and the front steering design guidelines for small-wheel bicycles have been developed. The guidelines contradict the current small-wheel bicycle design practice, as they recommend steeper headtube angles for small-wheel bicycles. The guidelines were validated with good agreement between the theoretical and experimental results on two prototype 20-inch-wheel bicycles having counter-intuitive steering geometry.
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Hou, Shuai Song. "Design of a Bicycle Wheel with Shock Absorption Ability." Applied Mechanics and Materials 872 (October 2017): 235–40. http://dx.doi.org/10.4028/www.scientific.net/amm.872.235.

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Wheel is an important part in the overall structure of bicycles. So performances of wheels have a great influence on the performances of bicycles. For example, if we improve the shock absorption of wheels, the bicycle will have better riding comfort. Traditional bicycle wheel absorbs shock from rough roads using the tire. In this paper, we propose a new design concept for the bicycle wheel with shock absorption ability. Firstly, we perform force analysis for the bicycle wheels. In order to verify our calculation, we conduct the finite element simulation analysis. The calculations and simulations have good consistency. Based on the calculations and simulations, we replace the steel spokes with some soft materials. Through impact test, we find that the bicycle with shock absorbing wheels has better riding comfort than traditional one. Meanwhile, the soft materials reduce the weight of wheels. So the overall performances of bicycle are improved significantly.
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Wang, Fei Peng, Qian Hui Yang, Ling Chen Zheng, and Hong Li Chen. "The Security Design of Child Seat of Electric Bicycle." Applied Mechanics and Materials 441 (December 2013): 572–75. http://dx.doi.org/10.4028/www.scientific.net/amm.441.572.

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In recent years, with many cities limiting motorcycle-related regulations in China, Electric bicycles due to the inexpensive, easy to maneuver, energy saving and environmental protection, are used by people of all ages. Now, electric bicycles have become one of the main means of transport, back of electric bicycles as "child seat" to carry child travel commonplace, traffic accidents are also frequent. Through the widespread use of electric bicycle child seat from the safety and comfort of both analysis concluded: these structures a variety of seat provides safety and security for their children is very limited. Next child safety seat structure, strength, and to do in-depth research, quality standards and quality control methods.
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Stanić, Branimir, and Darko Vujin. "NEW AESTHETICS OF THE CITY – DESIGN OF CYCLISTS TRAFFIC SIGNS." TRANSPORT 20, no. 6 (December 19, 2005): 257–64. http://dx.doi.org/10.3846/16484142.2005.9638029.

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In a number of towns and cities worldwide development programmes have been initiated to provide designated bike surfaces reserved for the movement of cyclists along city network. There has been an increase in the use of a bicycle as a regular means of personal transport, particularly in recent years when technical solutions and modern materials have allowed more active use of bicycles in big cities. Judging from the perspective of bicycles, Belgrade has undergone several significant changes. In the period preceding the Second World War the number of bicycles in the city (area of which used to be much smaller than today) was considerable, particularly in relation to vehicles. In the following periods, the development of the city has gradually pushed bicycles towards outskirts. Today bicycles are mostly used for recreation purposes. In this process special signalization addressed to cyclists has been mainly neglected. So‐called standard info‐solutions, essentially addressed to drivers, were applied. New aesthetics of the city, as one of possible ideas of the urban space re‐engineering, is based also on the introduction of “Zones 20” 20 mph (30 km/h) zones as well as on more active use of bicycles. In addition, both mentioned measures increase ecological quality of life in the city. A new concept of info‐system addressed to cyclists moving in a street network of a big city (Case Study of Belgrade, 2004) is presented in this paper.
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Hsieh, Long Chang, and Tzu Hsia Chen. "The Systematic Design of Multi-Speed Internal Gear Hub for a Bicycle." Advanced Materials Research 199-200 (February 2011): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.431.

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The bicycle is invented so far more than 200 years. Now, bicycles are used as exercising equipments and traffic vehicles. Planetary gear trains can be used as the transmission systems with multi-speed for bicycles. The purpose of this work is to propose a design methodology for the design of multi-speed internal gear hubs with planetary gear trains for bicycles. Based on the concept of train value equation and the kinematic relationship of the members between the train circuit, we propose a design methodology for the kinematic design of multi-speed gear hubs. One multi-speed internal gear hubs is designed to illustrate the design methodology. Based on the proposed methodology, all multi-speed gear hubs with planetary gear trains can be synthesized.
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Mahendra, Marcellino Aditya, and Rini Dharmastiti. "PENGEMBANGAN DESAIN SEPEDA ANAK USIA 7-12 TAHUN MENGGUNAKAN METODE RAPID ETHNOGRAPHY DAN SCAMPER." ATRIUM: Jurnal Arsitektur 6, no. 2 (November 11, 2020): 73–79. http://dx.doi.org/10.21460/atrium.v6i2.116.

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Title: Design Development of Bike for Kids (7-12 y.o) using Rapid Ethnography and SCAMPER Method Children by nature growth relatively fast. Their body expand in a short time that demand many things that they wear or use to meet their body accordingly. This to include also the need for their bicycle. In order to fulfill the needs of children’s comfort in cycling, some bicycles which are suitable with anthropometry of children’s body are required. With the existence of bicycle’s design which has longer durability than children’s bicycles in general, hence the children’s bicycle which will be designed would have sustainable design concept. Clark et al. (2009) states that sustainable design is a design concept which integrates 3 kinds of elements (people, profit, planet) and not merely an environmental-friendly concept. Developing a product with sustainable concept is not only done with a manipulation on materials which are bio-degradable, but also could be done with extending the lifespan of the product. Respondents which are targeted on this planning are children aged from 7 until 12 with their parents, since the children on this age range experience rapid growth. Not only the interests of the children aged from 7-12 as primer users which are concerned, but also their parents as secondary users. This matter is resulted from how the parents also play a role in choosing and buying the bicycle which will be used by their children.
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Gribb, Tye T., F. J. Worzala, and G. W. Gribb. "Modeling Bicycle-Rider Vibrations: Implications for Materials Selection." MRS Bulletin 23, no. 3 (March 1998): 56–58. http://dx.doi.org/10.1557/s0883769400030013.

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Over the past several years, the number of materials routinely employed for the fabrication of major bicycle components (e.g., frame, fork, and handlebar) has increased from one (steel) to at least five (steel, aluminum, titanium, fiber-reinforced polymers, and magnesium). Historically the primary driving force for implementation of new materials in bicycle manufacture has been the almost fanatical desire to reduce the weight of the bicycle. Although weight reduction of the bicycle will continue to be important, an old design paradigm—driven mostly by the recent popularity of bicycles designed to be ridden off-road (mountain bikes)—has re-emerged: the design of bicycles that minimize the amount of road/trail shock transmitted to the rider.
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Jia, Wen Qi, Tao Wu, and Xu Liu. "Development and Design of Rain and Shine Dual-Use Bicycle Based on Solid Edge." Advanced Materials Research 816-817 (September 2013): 691–94. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.691.

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Responding the green commuting, Solid Edge V18 drawing software for the shape and function improvements of existing bicycle is proposed in this paper. This bicycle achieves the role of rain, shine dual-use and loading. It also satisfies the function requirements that people live in contemporary on bicycles. This article will elaborate the transmission device calculation and bicycle design based on Solid Edge Modeling.
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Ashby, M. F. "Materials, Bicycles, and Design." Metallurgical and Materials Transactions A 26, no. 12 (December 1995): 3057–64. http://dx.doi.org/10.1007/bf02669435.

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Ashby, M. F. "Materials, bicycles, and design." Metallurgical and Materials Transactions B 26, no. 1 (February 1995): 1101–8. http://dx.doi.org/10.1007/bf02653994.

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Dissertations / Theses on the topic "Bicycles – Design"

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Pålsson, Susanne. "Electric bicycle rack for an urban environment : A bicycle rack that caters for the needs for electric bicycles in today’s society." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78873.

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More and more people commute to work, travel and use the electric bicycle as a daily means of transport. The need for bicycle racks, adapted for electric bicycles is growing and the demands on bicycle racks are higher than for bicycle racks for ordinary bicycles. This as they are very expensive to buy. On behalf of NOLA Industries, a bicycle rack for electric bicycles will be designed. The bicycle rack must also meet the need to recharge the batteries while the bicycle is parked and meet all found requirements from all stakeholders, which were collected during the project. The project is carried out by one student from Luleå University of Technology, who is studying M.Sc. in industrial design with a focus on product development. The project was carried out in Luleå with NOLA at a distance in Stockholm. The aim of the project was to come up with an idea for a bicycle rack that is suitable for public environments and that also fits into NOLA’s existing product range. At the beginning of the project, the time was planned using a Gantt scheme. The process used was CDIO consisting of four different phases. After the planning was completed, a benchmarking was made of how the situation looked and how the electric bicycles in today’s society work. The theory section was planned and introduced with a description of the line of technical design. The chapter was then followed up with relevant theory for the project. In order to find out what users think of existing bicycle racks and what were the desires for future bicycle racks, a survey was sent out. The work continued with several different information collection methods which were then followed up with creative work in the design phase. The final work included CAD models and renderings from keyshot of the finished concept. The final concept meets stakeholder requirements for an electric bike rack. It fulfill the need to be able to recharge the electric bike’s battery and to lock the electric bike in several points. The roof and the bicycle racks are equipped with led lighting, counteracting vandalism and theft of the electric bicycles. The roof also protects the electric bicycles against weather conditions.
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Curry, Laura Elizabeth. "Bicycles and Bodies at the Edge of Roadway Design." Thesis, State University of New York at Buffalo, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1566868.

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Within the discourse on environmentalism and transportation, artists and activists have engaged the bicycle as more than a means of transportation. For an American culture infatuated with the automobile, bicycling has taken on new meaning. Far beyond simply moving people from one place to another in an economical and ecologically friendly way, bicycling can now be understood as a set of symbolic acts intended to subvert and critique automobile culture. For example, artist and author David Byrne advocates for a burgeoning culture of bicycle riders as part of a transportation revolution. Commute Clot, (also known as Critical Mass), a monthly public cycling event in over 300 cities worldwide, situates hundreds of bicyclists, riding en masse usually at rush hour, as activists on busy urban streets, promoting an active, physical and frequently dangerous confrontation between the motorist and cyclist.

Even without the in-your-face confrontation staged by Critical Mass, the material and social conditions of urban cycling can be anything but pleasurable. This project engages media and technology to explore and articulate the roadway as a landscape of frictions between the unprotected flesh of the cyclist and the unyielding metal of the automobile. The topic emerges as especially timely and urgent because the symbolic value of the bicycle as a healthy and environmentally positive option to automobiles frames this opposition anew as a conflict between carbon powered and human powered movement.

The daily confrontation between the motorist and the cyclist, however, involves a real level of danger. To articulate the non-motorist's relationship to the roadway, I consider the bicycle within potential hostile contexts such as roadways without bicycle lanes, locations with extreme weather, and shared roadway space where the non-motorist's bicycle awareness and bicycle knowledge are less evident.

As an artist, I am drawing on the data of the lived bodily experiences of the bicyclist in order to reveal the complexity of social-spatial relations embodied in the non-motorized roadway. Through doing so I am specifically interested to challenge urban design and transportation policies that create hegemonically fraught roadway spaces. Such institutionalized design processes, like those found in urban planning, whether top-down or participatory, tend to be abstracted, where the embodied experience of the roadway users are not considered in the planning discourse. Because the body is missing from the planning dialogue, a public perception evolves where the roadway is assumed to be a space for motorized vehicles. This perception is marginalizing if not life threatening for cyclists and other pedestrians. Casting others' and myself as the quantified interface with the roadway systems using audio recording, photography and interviews, I track the mental and physical experiences of others' and myself while on the roadway. My projects Rest Stop Bike Repair Shop, and Bike Date become platforms for promoting a phenomenological approach to critical roadway design. From a ground up, grass roots-based activist art practice, it is my hope that these planning and design processes can become more informed and influenced by the lived experience of non-motorized roadway inhabitants.

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Streitenberger, Dirk. "Analysis and optimization of a new design of a bicycle frame." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19595.

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Quek, Natalie. "From Cars to Complete Streets: Integrating Bicycles Into Seattle's Transportation Network." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/scripps_theses/1330.

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This thesis explores the process of integrating cycling infrastructure into transportation networks in major cities. It starts by contextualizing the process in Copenhagen, Denmark (often called the best bike city in the world) during its cycling movement in the mid-20th Century. The findings from Copenhagen show that cycling is both viewed as a legitimate and respected mode of transportation and that the city layout, density, and topography is conducive to cycling. In the United States, this thesis explores the federal policies that have been created in support of the Complete Streets movement and makes the case that Complete Streets generally yield many benefits. In the final section, this thesis contextualizes these studies with a case study of Seattle and explores the challenges that have been associated with implementing Seattle’s Bicycle Master Plan. Although the city has made some small-scale cycling infrastructure, the number of cyclists in the city remains low and the bike network remains disconnected. There has been tremendous citizen pushback against lanes for fear of increased traffic and gentrification, and Seattle’s layout and topography presents additional challenges. While the author is in support of bicycling and cycle networks, she believes it is important to consider the opposition to implementing this infrastructure so that we can be more deliberate, sensitive, and inclusive with creating cycle networks in the future. The author proposes that cycling infrastructure may need to be done in smaller pockets before a citywide network can be successfully developed.
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Lyon, Mark Edward. "Incorporating Functionally Graded Materials and Precipitation Hardening into Microstructure Sensitive Design." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd260.pdf.

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Hunt, Christopher Allen. "CORGI: Compute Oriented Recumbent Generation Infrastructure." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1708.

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Creating a bicycle with a rideable geometry is more complicated than it may appear, with today’s mainstay designs having evolved through years of iteration. This slow evolution coupled with the bicycle’s intricate mechanical system has lead most builders to base their new geometries off of previous work rather than expand into new design spaces. This crutch can lead to slow bicycle iteration rates, often causing bicycles to all look about the same. To combat this, several bicycle design models have been created over the years, with each attempting to define a bicycle’s handling characteristics given its physical geometry. However, these models often analyze a single bicycle at a time, and as such, using them in an iterative design process can be cumbersome. This work seeks to improve an existing model used by the Cal Poly Mechanical Engineering department such that it can be used in a proactive, iterative fashion (as opposed to the reactive, single-design paradigm that it currently supports). This is accomplished by expanding the model’s inputs to include more bicycle components as well as differently sized riders. This augmented model is then incorporated into several search platforms ranging from a brute-force implementation to several variants using genetic algorithm concepts. These models allow the designer to specify a bicycle design search space as well as a set of riders upfront, from which the algorithms search out and find strong candidate designs to return to the user. This in turn reduces the overhead on the designer while also potentially discovering new bicycle designs which had not been considered previously viable. Finally, a front-end was created to make it easier for the user to access these algorithms and their results.
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Tovar, López Carlos. "Electric Bicycle Design." Thesis, Jönköping University, JTH, Mechanical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10075.

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The thesis consists of the design of an electric bike.

Based on the analysis of the needs arising from urban transport in Sweden and its people.We wanted to develop a bicycle that could be manufactured in the coming years and be widely accepted by the Swedish population and later also in Europe.

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Lam, Duhane. "Bicycle suspension design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0025/MQ51383.pdf.

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Racz, Rastislav. "Design of a bicycle rig." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59956.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references.
A design of a bicycle (bike) rig was conducted. This bike rig is designed to be used for aerodynamics measurement testing of bicycles, cyclists and cycling related items in a wind tunnel. This paper discusses the design of a new version of the bike rig that has been used in the MIT Wright Brothers Wind Tunnel. Through finite element analyses, feasibility and practicality studies the best bike rig was designed. A three groove kinematics coupling principle was used in the design of the measurement device of the rig. This paper contains detailed description of the working principle of the bike rig. This paper can also serve as instructions for building a new bike rig.
by Rastislav Racz.
S.B.
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Lawrence, Molly. "Experiential Graphic Design: Generating Urban Renewal by Improving Safety and Connectivity in Bicycle Pathways." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1460734967.

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Books on the topic "Bicycles – Design"

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Lessing, Hans-Erhard. Bicycle design - An Illustrated History. Cambridge, MA USA: MIT Press, 2016.

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Moreno, Shonquis. Velo: Bicycle culture and design. Berlin: Gestalten, 2010.

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Wiley, Jack. How to build unicycles and artistic bicycles. 2nd ed. Lodi, Calif: Solipaz Pub. Co., 1985.

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Evans, David E. The ingenious Mr. Pedersen. Stroud, Gloucestershire: A. Sutton, 1992.

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Noon, Bingo Sun. How much does it weigh? Portland, OR: Robobike Press, 2006.

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Berto, Frank J. Bicycling magazine's complete guide to upgrading your bike. Emmaus, Pa: Rodale Press, 1988.

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1947-, Pradères Jean-Pierre, ed. The competition bicycle: A photographic history. Seattle, WA: Vintage Bicycle Press, 2008.

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Bernard, Angerer, and Smith Paul, eds. Cyclepedia: A century of iconic bicycle design. San Francisco: Chronicle Books, 2011.

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The golden age of handbuilt bicycles: [craftsmanship, elegance, and function]. New York: Rizzoli, 2009.

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How is a bicycle made? New York: Simon & Schuster Books for Young Readers, 1993.

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Book chapters on the topic "Bicycles – Design"

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Lardón-Amat, P., O. D. de-Cózar-Macías, F. J. Castillo-Rueda, C. Ladrón-de-Guevara-Muñoz, and L. Miravet-Garret. "Multifunctional Device for Bicycles." In Advances on Mechanics, Design Engineering and Manufacturing II, 123–33. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12346-8_12.

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Shen, Tianshi, Peng Ran, Yonghe Ou, Yang Wang, Biwei Zhu, Ya Zhou, and Liang Ying. "Service Design about the Recycle System of College Bicycles." In Lecture Notes in Computer Science, 220–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21660-2_25.

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He, Jiarui, and Mingguo Zhao. "Control System Design of Self-balanced Bicycles by Control Moment Gyroscope." In Proceedings of the 2015 Chinese Intelligent Automation Conference, 205–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46466-3_21.

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Cabral, Ricardo, Eduardo Peixoto, Carlos Carvalho, and Rui José. "An Ecosystem Approach to the Design of Sensing Systems for Bicycles." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 580–95. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76063-2_39.

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Shahid, Mohammad, Subir Dey, Subhajit Chandra, Anmol Srivastava, Ashish Kumar Yadav, Shilpi Bora, Pallavi Rani, and Debkumar Chakrabarti. "Number Plate Design for Bicycles: An Approach from Aesthetic and Ergonomic Perspective." In Ergonomics in Caring for People, 235–41. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4980-4_29.

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Han, Benedict. "Instagramming urban design along the Ohlone Greenway." In Bicycle Urbanism, 55–77. Abingdon, Oxon ; New York, NY : Routledge, 2018. |: Routledge, 2018. http://dx.doi.org/10.4324/9781315569338-5.

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Underwood, Robin T. "Bicycle Facilities." In The Geometric Design of Roads, 160–72. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-15157-8_6.

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Colville-Andersen, Mikael. "Bicycle Urbanism by Design." In Copenhagenize, 12–27. Washington, DC: Island Press/Center for Resource Economics, 2018. http://dx.doi.org/10.5822/978-1-61091-939-5_3.

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Cox, Peter. "Bicycle design history and systems of mobility." In Mobilising Design, 48–61. Abingdon, Oxon, ; New York, NY : Routledge, 2017. | Series: Routledge studies in human geography ; 69: Routledge, 2017. http://dx.doi.org/10.4324/9781315560113-5.

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Ayre, Michael. "Prelims - The Design of Bicycle Trailers." In The Design of Bicycle Trailers, i—v. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1986. http://dx.doi.org/10.3362/9781780444017.000.

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Conference papers on the topic "Bicycles – Design"

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Stackhouse, Richard V., and Zuomin Dong. "Development of Electric Bicycle Performance Testing Techniques and Adaptable Electric Bicycle Power System." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35555.

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Battery powered electric bicycles and scooters, replacing the heavily polluting scooters with two-cycle internal combustion engines, provide zero-emission transportation for many parts of the world. Annual global sales of electric bicycles have risen from 36,000 in 1993 to over 500,000 in 1999 and to multi-millions today. To facilitate the development of new electric bicycles, a computerized electric bicycle testing facility has been created. Standardized testing cycles for quantitatively measuring the performance of electric bicycles have been developed. Testing results of three representative electric bicycles using the newly introduced electric bicycle testing methods and testing facility are presented. The development of a low-cost, fully Adaptable Electric Bicycle Power System (AEBPS) designed to be quickly adapted to a regular bicycle is also presented. The AEBPS can be attached to a regular bicycle in less than ten minutes, and removed in under five minutes. Performance of a converted bicycle using the AEBPS is evaluated and compared with representative commercial electric bicycles. The work forms the foundation for systematically evaluating different electric bicycle designs and for carrying out design optimization of electric bicycle power systems suitable to different markets and needs.
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Khosrowjerdi, M., Robert C. Azar, Ali Salehi, and G. H. Nazari. "Computer-Aided Design of Bicycles." In ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0132.

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Abstract Traditional manual designing of bicycles often relies on prototype building and testing and since structural deficiencies often are not obvious until a prototype fails, several build-and-test iterations are usually required before a satisfactory design is obtained. Also, the final design may be less than optimal because of quick fixes inserted at the last minute. However, by utilizing computer-aided design, better bicycles can be designed at smaller investments of time and money. The development and utilization of a DI-3000 based (graphics subroutines developed by Precision Visual), user-friendly, self contained computer aided design package for the analysis and design of bicycle frames and forks are presented. The software, written in Fortran 77 and executable on most passive and active graphics devices, creates the necessary analysis input files for the ANSYS finite element program (developed and marketed by Swanson Analysis System Inc.). These pre and post processing files in conjunction with the ANSYS program are used to determine deflections and stress components. The graphics user interface module of the software allows users to enter bicycle geometry, loading and other pertinent data quickly and efficiently. Tubing configuration and specifications are selected from a data base through the use of cursor-controlled menus. The loading menu presents users with seven different types of realistic and self-consistent loading conditions from which to choose. Computer graphics is also used extensively wherever appropriate to enhance user-computer interaction. Contrasting color and text size are used to explain pictorially as well as visually unfamiliar terminology and to clarify vague sign or orientation conventions, thus, leading to more accurate input. While this package has been designed for instructional purposes, it can also be used by design engineers involved in the design of bicycles to facilitate the creation of ANSYS pre and post processing files.
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Hurtado, Valentina, Santiago Arango, Luis Muñoz, and Omar López. "Design of an Onboard Directional Anemometer for Bicycles." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22727.

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Abstract Wind speed has large influence on the results of road tests applied to bicycles. For this reason, this paper presents the design process of an onboard anemometer dedicated to bicycle testing. The design provides an affordable way to quantify both magnitude and direction of the wind velocity relative to the bicycle, allowing recording on arbitrary wind conditions that could arise during a test. The design methodology was structured with two major phases. The first was centered on the proof-of-concept for the use of a multi-hole pitot tube as main component for the onboard anemometer. The second was focused on the design of the structure, considering both packaging and structural integrity. The prototype of anemometer was tested in a wind tunnel to verify its performance, and it was also tested under severe vibrations to verify its structural integrity. The results showed that this concept can be used as a part of the bicycle instrumentation for road tests.
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Doria, Alberto, and Matteo Formentini. "Identification of the Structural Modes of High Performance Bicycles in the Perspective of Wobble Control." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47030.

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Most of researches in the field of bicycle dynamics deal with auto-stabilization and rider control by means of steer-torque and lean-torque. Bicycle models composed by rigid bodies with thin wheels making point contact with the road and rolling without any slip are suited for carrying out these studies. Numerical analysis of stability by means of these models leads to the capsize, castering and weave modes, which make it possible to understand many aspects of bicycle dynamics. However, some high performance bicycles at high speed show dangerous wobble oscillations. Cyclists’ experience and recent researches highlight that wobble phenomena are related both to tire properties and to fork and frame compliance. Since structural compliance in dynamic conditions generates vibrations, this paper focuses on the study of structural vibrations of high performance bicycles with the modal analysis approach. To isolate the effects of frame and fork compliance, four particular bicycles are considered, they are built assembling a pair of wheels, two forks (fork A and B) with the same shape but different structures and materials and two frames (frame A and B) with the same shape but different structures. Preliminary road tests showed that bicycles made with components A are more prone to wobble oscillations. In order to have a better comprehension of the different influence of fork and frame compliance, first the two forks (with the front wheel) are modally tested with the steer tube locked to a very stiff structure, then, the whole bicycles are tested. Modal analysis is carried out with the impulse method, for the analysis of each bicycle 60 FRFs are measured. The results of modal analysis are presented and the influence of identified modes on bicycle stability is discussed. An important issue of modal analysis of vehicles is the correlation between modal tests carried out in the laboratory and bicycle behavior on the road. When the vehicle is tested in the laboratory, additional constraints are added to guarantee equilibrium, but centrifugal forces are not present, because the vehicle is stationary. Since the analysis of the equations of linearized dynamics shows that the stiffness matrix includes a part due to centrifugal effects, the additional stiffness terms due to constraints in laboratory tests can be assumed to be equivalent to the centrifugal terms of the stiffness matrix at a certain speed. Details and limits of this equivalence are presented and discussed in the paper.
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Deng, Wenhao, Skyler Moore, Jonathan Bush, Miles Mabey, and Wenlong Zhang. "Towards Automated Bicycles: Achieving Self-Balance Using Steering Control." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9244.

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In recent years, researchers from both academia and industry have worked on connected and automated vehicles and they have made great progress toward bringing them into reality. Compared to automated cars, bicycles are more affordable to daily commuters, as well as more environmentally friendly. When comparing the risk posed by autonomous vehicles to pedestrians and motorists, automated bicycles are much safer than autonomous cars, which also allows potential applications in smart cities, rehabilitation, and exercise. The biggest challenge in automating bicycles is the inherent problem of staying balanced. This paper presents a modified electric bicycle to allow real-time monitoring of the roll angles and motor-assisted steering. Stable and robust steering controllers for bicycle are designed and implemented to achieve self-balance at different forward speeds. Tests at different speeds have been conducted to verify the effectiveness of hardware development and controller design. The preliminary design using a control moment gyroscope (CMG) to achieve self-balancing at lower speeds are also presented in this work. This work can serve as a solid foundation for future study of human-robot interaction and autonomous driving.
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Abagnale, Carmelina, Massimo Cardone, Paolo Iodice, Salvatore Strano, Mario Terzo, and Giovanni Vorraro. "Analysis of a New Measurement System of the Chain Strength for Electrically Assisted Bicycles." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20364.

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This paper presents an activity concerning a theoretical/experimental analysis of a new measurement system of the chain strength functional for the control of the electrically assisted bicycles. Such systems are characterized by a driving torque due to the contribution of an electric motor and of the rider. The electrical assistance is commonly regulated taking into account informations such as chain ring rotation, bicycle speed and/or the torque given by the rider. As a consequence, suitable measurements have to be made on board in order to handle the assistance performances and to improve drivability.
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Doria, Alberto, and Edoardo Marconi. "A Testing Method for the Prediction of Comfort of City Bicycles." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85128.

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An experimental/numerical method for predicting bicycle comfort from laboratory tests is presented. The frequency response functions of the seat post and of the handlebar stem are measured by means of impulsive excitation applied on vibrating tables placed under the front and rear wheel. The interference between front and rear excitation, which occurs on the road, is taken into account by numerically calculating the correlated frequency response function. Numerical calculations based on the concept of vehicle mission make it possible to manage the dependence of acceleration on forward speed and to calculate acceleration indexes. Results obtained with 2 bicycles and 3 levels of inflation pressure show the validity of the method.
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Egami, Shusaku, Takahiro Kawamura, Yuichi Sei, Yasuyuki Tahara, and Akihiko Ohsuga. "Schema Design of Illegally Parked Bicycles LOD." In 2016 5th IIAI International Congress on Advanced Applied Informatics (IIAI-AAI). IEEE, 2016. http://dx.doi.org/10.1109/iiai-aai.2016.226.

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He, Jiarui, Mingguo Zhao, and Sotirios Stasinopoulos. "Constant-velocity steering control design for unmanned bicycles." In 2015 IEEE International Conference on Robotics and Biomimetics (ROBIO). IEEE, 2015. http://dx.doi.org/10.1109/robio.2015.7418805.

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Chira, Camelia, Javier Sedano, Jose R. Villar, Monica Camara, and Emilio Corchado. "Evolutionary model support for Urban Bicycles Renting Systems." In 2011 11th International Conference on Intelligent Systems Design and Applications (ISDA). IEEE, 2011. http://dx.doi.org/10.1109/isda.2011.6121758.

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Reports on the topic "Bicycles – Design"

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Weigand, Lynn. Bicycle and Pedestrian Design Curriculum Expansion. Portland State University Library, February 2010. http://dx.doi.org/10.15760/trec.11.

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Haire, Ashley. Bicycle and Pedestrian Engineering Design Curriculum Expansion. Portland State University Library, February 2012. http://dx.doi.org/10.15760/trec.75.

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Obua, Steven. Practal — Practical Logic: A Bicycle for Your Mathematical Mind. Recursive Mind, July 2021. http://dx.doi.org/10.47757/practal.1.

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Volinski, Joel. A Summary of Design, Policies and Operational Characteristics for Shared Bicycle/Bus Lanes. Tampa, FL: University of South Florida, July 2012. http://dx.doi.org/10.5038/cutr-nctr-rr-2011-07.

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Bellogi, Pietro, Intaek Lee, and Nissar Ahmed. Car-to-Bicycle Side Crash Simulation~Cyclist Head Injury Prediction and Car Design Optimization. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0523.

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Vuruskan, Arzu, and Susan Ashdown. Development of Half Scale Dress Forms in Active Body Positions for Bicycle Clothing Design and Fit. Ames: Iowa State University, Digital Repository, November 2015. http://dx.doi.org/10.31274/itaa_proceedings-180814-10.

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