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




Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
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
Show that the specific heat at saturation of a liquid phase of mass m (defined by Cf= (deltaQ/m)dt is generally not the same as the specific heat at constant pressure of the s
Consider combustion of hydrogen in pure oxygen under constant pressure in a two-inlet and single-exit reactor. The reactants enter the reactor at temperature T1 = 200 K. The p
A heat pump uses refrigerant-134a to extract heat from the outside air at -10°C to maintain a house at 15°C.The refrigerant enters the condenser at 600kPa and 25°C at a rate o
Consider a simply supported beam of length 50ft subjected to a uniformly distributed downward load of 10kips/ft from x=10ft to x=40ft and concentrated downward loads of 100kip
Determine the temperature at a point 9 cm from the origin. Also, calculate the temperature gradient in the element. Show that the sum of the shape functions at the location
CEGR 631.185: Structural Dynamics Spring 2017 EXAM. Response to Arbitrary and Pulse Excitations. For the triangular pulse shown below, SHOW ALL OF YOUR WORK to: Determine the
In the limiting case of a very small sphere, what is the minimum value of the convection heat transfer coefficient expressed in terms of the sphere diameter and thermal cond
Considering the weather data, typical heating loads, and the price of natural gas in your area, make a recommendation to your neighbor based on a convincing economic analysi