+1-415-670-9189
info@expertsmind.com
Design brief provided to produce a design proposal
Course:- Mechanical Engineering
Reference No.:- EM13775420




Assignment Help
Assignment Help >> Mechanical Engineering

You are required to respond to the design brief provided to produce a design proposal for an experimental rig which will measure the mass properties of a bicycle wheel, specifically:

-    The mass of the bicycle wheel

-    The polar moment of inertia about its rotational axis (See the design brief)

Design Brief - Overview

The mass and polar moment of inertia of a bicycle wheel is particularly important for cyclists who participate in competitive events. In general, it is desirable that both the mass of the wheel, and its polar moment of inertia should be as low as possible.

When comparing bicycle wheels, it is usual for the mass of front and rear wheel's to be quoted by manufacturers and reviewers, but it is rare that the moment of inertia is given. However, it is possible for wheels with the same mass, to have a different polar moment of inertia as a result of the fact that mass is distributed differently. This means that consumers often do not have all of the information that they would like regarding the difference between wheel sets.

In this design project, you are tasked to design a testing rig which would enable the experimental determination of the following properties of a bicycle wheel:

-    The mass of a bicycle wheel [kg].

-    The polar moment of inertia of a bicycle wheel about its rotational (rolling) axis [kg.m2 ].

Design Brief - Specific Requirements

The system which you design should perform tests, collect data and generate results with as little manual intervention as possible. The test should be designed to be repeatable.

The test rig should be able to be used with any standard 700c bicycle wheel. The hub widths will be 110mm at the front, and 135mm at the rear.

A high performance 700c wheelset might have mass properties as follows. These values are supplied only to give an indication of the approximate values which you might end up measuring. In reality many wheels could be 50-60% heavier, while a few could be a little lighter. You can use these values as the basis for any analysis of your design.

-    Front Wheel

-    Rear Wheel

o Mass = 0.55 [kg] = 550 [g]

o Moment of Inertia = 0.035 [kg.m2] = 3.5 [g.cm2]

o Mass = 0.75 [kg] = 750 [g]

o Moment of Inertia = 0.037 [kg.m2] = 3.7 [g.cm2]

Answered:-

Verified Expert


Preview Container content

INTRODUCTION: -

The improvement of the bike can be followed back similarly as 1817 when Baron Karl von Drais of Mannheim, Germany designed his two wheeled 'running machine'. Von Drais' machine included side panniers and wheels of 690 mm width (27 inches) and was imitated and further grew by others including Denis Johnson, a coachmaker who chosen that a chiefly iron casing was more advantageous than a wooden edge.

After some starting suspicion, it was exhibited that Von Drais' machine (called "le velocipede" in Paris where it was licensed) could surpass the pace of runners and stallion pulled post carriages even over voyages of up to three hours (Wilson, 2004). These early machines joined wooden pressure spoked wheels planned comparably to those utilized on stallion drawn carriages and trains.

Taking after Von Drais, a few other real strides in the improvement of the bike happened. Firstly, pedals were added to make impetus amid the 1860s. This prompted the initially 'bike blast' beginning in Paris and spreading to Belgium, the Netherlands, Germany, Britain and the United States (Wilson, 2004).




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Mechanical Engineering) Materials
This problem related to Mechanical Engineering and the problem is about find the magnitude of velocity of a marble being projected on a 15 degree inclined plane. The computa
An automobile storage battery with an open circuit voltage of 12.8 V is rated at 260 A/h. If the internal resistance of the battery is 0.2 ?, estimate the maximum duration o
Design a signal conditioning system to acquire and store an EGG bio potential. The bandwidth of interest is between 6 and 120 Hz and has peak amplitude of approximately +/-10
Calculate the health insurance reimbursement for a man who had a car accident and had to spend 10 days in the hospital at a daily cost of $750, with additional physician lab
Air enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is heated as it flows, and leaves the pipe at 180 kPa and 40°C. Determine
What amount must be deposited into a savings account that pays 8% interest if the inflation rate is 10% and you want to set aside enough money to purchase a steel cutting mach
Ammonia is to be isothermally compressed in a specially designed flow turbine from 1 atm and 672 R to 50 atm. If the compression is done reversibly, compute the heat and work
Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then m