Mechanical Engineering: Eco-System Bicycle Design Project

This project explores the design of a bicycle, focusing on material selection and eco-system considerations. The assignment is divided into three phases: selection of process, selection of material, and design and implementation. The project delves into the essential components of a bicycle, emphasizing the importance of material properties such as strength, stiffness, and weight. It examines various materials like carbon steel, aluminum alloys, and CFRP, considering their suitability for different bicycle types (shopping, racing, mountain). The project highlights the significance of constraints, objectives, and free variables in the design process, using the CES Edupack for analysis. It also addresses environmental impacts, including material sourcing, manufacturing, and end-of-life considerations. The project emphasizes the need for trade-offs between cost, mass, and performance, while considering the social and environmental implications of bicycle design.

Eco system design project

The essential idea in bicycle design. Immovability matters, clearly, however, the primary
arrangement decide is that the packaging and forks should not yield or break in the run of the
mill use. The stacking on the forks is dominatingly bowing. If the bicycle is for dashing, by then
the mass is a basic idea: the forks should be as light as could sensibly be normal. What is the best
Phase 1: Selection of Process (Bicycle)
The essential fragments of the bicycle are outstanding, and their ability needs no illumination.
The greatest of these is the packaging. Edges can be created utilizing an astonishing grouped
assortment of materials: carbon steel, amalgam steel, aluminum composites, magnesium mixes,
titanium blends, GFRP, CFRP, nylon, and even wood. How is it that such average assortment
can exist together in a free market in which competition bolsters the fittest – undoubtedly there
must be a solitary "best" material for bicycle plots? The mistake here is to accept that all bicycles

have a comparable reason. The detail of a "shopping" bicycle is by and large not quite the same
as that of one for speed or mountain bicycling, like the goals of the purchaser.
It must have a particular strength and quality. If it isn't firm and adequately strong it won't work,
be that as it may, it is never required to have boundless solidness or quality. Robustness and
quality are along these lines objectives that push toward getting to be limits on modulus,
adaptable most extreme and shape. If the bicycle is for run hustling, it should be as light as
possible – in case you could make it unfathomably light, that would be best of all. Restricting
mass, here, is the target, perhaps with a most extreme limit (an impediment) on cost. In case
rather it is a shopping bicycle to be sold through general stores it should be as poor as possible –
the more affordable it is, the more will be sold. This time restricting cost is the objective,
possibly with an uttermost cutoff (a constraint) on mass. For most bikes, constraining mass and
price are the two objectives, and after that trade-off, procedures are required. They come later.
For the present utilize judgment to pick without a doubt the essential target and make all others
into restrictions.
Explore the picked part, posting its ability, the goals it must meet, and the goals – this requires a
decision about the kind of bicycle you are arranging (shopping, speed, mountain, falling,
child'sQ). Make a point to fuse a lower cut-off basic on break solidness (K1c > 15 MPa.m1/2 is a
better than an average general rule) – a delicate bike would not be a brilliant idea. Once-over the

essentials as Function, Constraints, Objectives and Free Variables. Elucidation is the task of re-
imparting design necessities in wording that engage material and process assurance. Handle the
exercises by characterizing the reactions to the request in this table. Do whatever it takes not to
try to show the direct at this point. Essentially altogether consider what the fragment does, and
list the confinements this powers on material choice, including getting ready requirements. A
basic is a central condition that must be met, ordinarily conveyed as a limit on a material or
process quality. An objective is a sum for which an extremum (a biggest or slightest) is searched
for, occasionally cost, mass, or volume, yet there are others, a couple of which appear in the
exercises underneath. Take the instance of a bicycle plot. It must have a particular solidness and
quality. In case it isn't solidified and adequately strong it won't work, in any case it is never
required to have unbounded strength or quality. Immovability and quality are subsequently
necessities that push toward getting to be purposes of restriction on modulus, flexible limit, and
shape. If the bicycle is for run dashing, it should be as light as could be normal considering the
present situation, if you could make it unendingly light, that would be best of all. Restricting
mass, here, is the objective, perhaps with a greatest most extreme (a goal) on cost. In case rather
it is a shopping bike to be sold through stores it should be as decrepit as could be permitted, the
more affordable it is, the more will be sold. This time constraining cost is the objective, possible
with a most extreme limit (a goal) on mass.

Both strength and quality are fundamental in bicycle diagram. Regardless, the essential idea in
the arrangement of the forks is quality – it is key that they don't tumble in normal use – which
consolidates riding over checks and distinctive irregularities. The stacking on the forks is
fantastically winding. In case the bicycle is for dashing, by then the mass is a fundamental idea:
the forks should be as light as could be reasonable the situation being what it is.
Phase 2: Selection of Material (Bicycle)
Bicycles have been made of each one of the seven of the materials recorded in the table, you can
regardless buy bicycles made of six of them. Early bicycles were made of wood; display day was
hustling bicycles of steel, aluminum or CFRP, as a rule interleaving the carbon fibers with layers
of glass or Kevlar to improve the split assurance. Mountain bicycles, for which quality and
influence security are mainly essential, have steel or titanium forks. The peruser may be chafed
by the imprudent manner by which speculation for a straight shaft with an end stack acting

regularly to it is associated with a twisted column stacked at an extreme angle. When the
elements were delineating the down to earth requirements (F), the geometry (G) and the
materials (M) in the execution condition are separable, the unobtrusive components of stacking
and geometry impact the terms F and G however not M. This is a delineation: column curve and
an edge of utilization of load don't change the material rundown, which depends just on the
arrangement essential of value in bowing at any rate weight.
We show the forks as light emanations L that must pass on a most outrageous load P (both
settled by the arrangement) without plastic fall or break. The forks are tubular, of range r and
ended divider thickness, t. The mass is to be constrained. The fork is a light, durable bar. Also,
unpretentious components of load and geometry are silly: the best material and shape, read, that
with the best regard. If the forks were solid, inferring that, spruce wins (see the second last area
of the table). Bamboo is outstanding in light of the way that it creates as an unfilled tube with a
noticeable shape factor of around 2.2, giving it a curving quality that is significantly higher than
solid spruce (last area). Exactly when the shape is added to exchange materials, in any case, the
situating changes. The shape factors recorded in the table are achievable using conventional
creation techniques. Steel is extraordinary; CFRP is better; Titanium 6-4 is far and away
superior. In quality compelled applications magnesium is poor paying little respect to its low
thickness.

Phase 3: Design and Implementation (Bicycle)
The essential is a sensible strategy for in-arrive transportation. A bicycle is a
possible game plan. The first decision in the blueprint of the bicycle is the
course of action. From this takes after the stacking of the parts that make up
the outline – the fundamental prerequisite is that the choice of the zone and
material must pass on these piles safely. The material choice is also refined
by adding essentials of protection from ecological utilization, expected life,
the course of action for palatable end-of-life process. The required material
properties can be procured by a mix of taking care of and furthermore
alloying; this is made possible by the specific fundamental parts required,
and their holding and jewel structure or other little scale helper approaches.
Along these lines, the diagram necessities offer inspiration to "enter down,"
in a manner of speaking, to talk of materials properties, planning, and
microstructure. By and by looking biological impact of the bicycle (a review
that it should be down to earth) you then need to reason in another setting:
what materials influence the most on nature? Would the bicycle need help?
By what means will it be disposed of toward the completion of its life? What
is the cost of ownership? Should the individual have the bicycle, or would it
be a smart thought for it to be rented? There is the subject of good sourcing
of materials: would they say they are made locally? If not, would they say
they are sourced from a country with a commendable record of treatment of
its work urge? Is a bicycle an important technique for transportation socially?
Would it encourage different people to have bicycles also? Would it have a
social impact in your neighborhood gathering? Would a "green" bicycle
influence well on individuals when all is said in made an impression of the
association for whom this design hone is finished?

This is just a significantly short instance of the broadness of thoughts that a
blueprint drove approach engages. This broadness typically needs an
attractive help. The CES Edupack is a mechanical training assembly that
assistants in noticing some of these requests in an exploratory virtual
condition, however, using authentic data about materials properties, direct
and environmental impacts. It was expected to help to teach in ways that
augment both the understudies' understanding and finding out about
materials. The visual thought of this mechanical assembly empowers the
understudy to get at first where elements stay in association with each other
along one or a couple of estimations. Easy to manufacture plots, like the one
in empowering understudies to understand both the extent of properties in
each material family and enquire why the refinements among different
materials develop. This engages a talk on the reasons behind this lead,
researching materials models, holding, microstructure and science. It sets
the stage to perceive how warm and mechanical meds impact a couple of
properties yet not others and it finally supports a course into materials
dealing with and gathering costs, in like manner reinforced by CES Edupack.

Flexibility is nonappearance of strength. The robustness of a structure
depends upon its shape and measure, and on the estimation of Young's
modulus, E of the material. In anticipate immovability E is a diagram limiting
property. In bicycle design, the estimates of E offered by plastics are
insufficiently far-reaching. Nevertheless, if the plastic is reinforced with
carbon or glass fiber the robustness can be extended to a supportive level –
prevalent bicycles are made of carbon-sustained plastic. A unit of both
essentialness and CO2 spreads in the unique times of life of the bicycle
(rough materials age, creating shapes, transportation of unrefined materials
in the midst of amassing, use, exchange and end of life decision)
environmental impact of the bicycle. If the production of the unrefined
materials is the most imperativeness exhausting time of life, then the
understudy should look for a material with a lower typified imperativeness or
useless material. If the usage arrange has the most impact, the weight of the

thing (for this circumstance, the bicycle) should be constrained. CES Edupack
proposes strategies to confine personal implications, yet mind must be taken
with various parts, as routinely a change in design may impact different
edges that were not anticipated. This again engages a course into a
productive exchange of the repercussions of setup changes. The measure of
data available in CES Edupack can be presented so to speak that is suited.
Specific discharges can be used for asking about specifical domains like
flight, bio-outlining or designing, with extra information on materials mainly
used as a piece of each field.
The Engineering Materials course was at that point set around mechanical
testing, warm and mechanical medicines of metals and a long and
exhaustive delineation of each material family: polymers, elastomers,
ceramic generation, glasses, metals, and mutts. As opposed to depicting
ponders, the course was resolved to an arrangement drove approach, where
the stray pieces are revealed when required, start from things and ending up
in the atoms, when reasonable. If one needs to design another bicycle
diagram, what materials could be used? Starting from design necessities –

limit, objective and goals – the class would then find the fitting material
families to do the action, considering all the specific edges like
embellishment, joining and surface treatment and their effect in the
mechanical lead of the bicycle layout. This allows the teacher to state warm
meds for the metal housings, for example, and clear up their effect in the
mechanical properties, or talk about fiber acquaintance in composites with
extend robustness and quality and look encouraged into the holding among
strands and grid as an authoritative parameter in getting the desired
mechanical response. This approach is altogether all the more enrapturing
for the understudies and gives reliable contact honest to goodness and
collectibles that understudies know.
The CES EduPack programming presents materials fundamentals in a way
that supplements any immediately materials message paying little respect to
the approach (science or plan drove) or the substance from which it is
instructed. All of which take the science-drove course can be expanded and
maintained with programming based activities to look at the universe of
materials. We have built up the plan drove approach in various syntheses, of
which two are proper for first and second year teaching. Another substance
"Materials: building, science, preparing and configuration" to the use of
materials in mechanical, warm, electro-engaging and optical course of
action. It offers an unusual condition of blend with CES EduPack, including
takes a shot at utilizing the thing. "Materials and Design" addresses issues of
a mechanical system, giving a prologue to materials to understudies of thing
plan. "Materials Selection in Mechanical Design" is a further made substance,
building up the methodology to a greater whole, one sensible for third, fourth
year and chiefs level educating.
The CES EduPack gives an advantage for expand based training. In the
Bicycle Project, for example, understudies are first requested to pick a
section from a bicycle (plot, forks, saddle, spokes, brake-interface) and a
customer gathering (e.g., kids, clients, going to utilize, run, mountain biking)