Design is important stage in manufacturing. It is because any product produced must be through
design stage where in design stage consists of conceptual design, concept selection; identify
customer need, concept selection, analysis and others. In design, it should be consider many factors
such as product design must be satisfied by customer, material used the ability product to work
and others. All part in design is to fulfil customer need. Beside that design will have an effect to
Company such as profit, loss and reputation of the company. In this paper We have modelled a
diamond frame of bicycle by using SOLID WORKS and performed finite element analysis on it
by using ANSYS 14.5. A conceptual design of bicycle is proposed for reducing the effort kept by
cycler while he rides on an inclined plane. The project idea is implementation of four bar
mechanism in bicycle.
A bicycle, often called a bike is a humanpowered, pedal-driven, single-track vehicle, having two
wheels attached to a frame, one behind the other. Bicycles were introduced in the 19th century in
Europe and now number more than a
billion worldwide, twice as many as automobiles. They are the principal means of transportation
in
many regions. They also provide a popular form of recreation, and have been adapted for such
uses as children's toys, general fitness, military and police applications, courier services and
bicycle racing. The basic shape and configuration of a typical upright, or safety bicycle, has
changed little since the first chain-driven model was developed around 1885. However, many
details have been improved, especially since the advent of modern materials and computer-aided
design. These have allowed for a proliferation of specialized designs for
diverse types of cycling. The dandy horse, also called Draisienne or laufmaschine, was the first
human means of
transport to use only two wheels in tandem and was invented by the German Baron Karl von Drays.
Its rider sat astride a wooden frame supported by two in-line wheels and pushed the vehicle along
with his/her feet while steering the front wheel. In the early 1860s, Frenchmen Pierre Michaud and
Pierre Aliment took bicycle design in a
new direction by adding a mechanical crank drive with pedals on an enlarged front wheel
(the velocipede). Several inventions followed using rear-wheel drive, the best known being the
roddriven velocipede by Scotsman Thomas McCall in 1869.These bicycles were difficult to ride
due to their high seat and poor weight distribution. Staley’s 1885 Rover, manufactured in
Coventry, England, is usually described as the first recognizably modern bicycle. Soon, the seat
tube was added, creating the doubletriangle diamond frame of the modern bike.
Project Idea:
There may exist many types of bicycle frames based on its usage and also based on the kind of
people use
like men or women. The geometry of the bicycle frame, its shape and size varying continuously
according to the satisfaction of the user. Many design modifications have been made on the bicycle
frame by the designers to optimize its design parameters. Our study on the bicycle frame is to
reduce the effort of the person while he will be riding on an inclined road. While he is riding on a
straight horizontal road, the inertia of the person and the cycle will affect the driving force of the
person.
The more the inertia of the person and the cycle, the more the effort or driving force applied by
the cycler. Hence the driving force of the cycler depends on the inertia and is proportional to it
when he is riding on a straight horizontal road. A situation arises when the cycle is driven on the
inclined plane or road. What all forces will resist the cause of motion? The answer is along with
the friction resistance, inertia of the person and cycle, there exists a weight
component which acts parallel to plane of inclination and in the direction opposite to that of
movement of
the cycle. The weight component along the plane of inclination is taken at the combined Centre of
mass
of the cycler and the bicycle.