BDA 3033 - Solid Project Analysis diving board by Macaulay’s methods and Strain rosette Project Study For BDA 3033 Solid Mechanics II By MAGENTHRAN KUPPUSAMY Department of Engineering Mechanics Faculty of Mechanical and Manufacturing Engineering University Tun Hussein Onn Malaysia Johor
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Analysis diving board by Macaulay’s methods and Strain rosette
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BDA 3033 - Solid Project
Analysis diving board by Macaulay’s methods and Strain rosette
Project Study For
BDA 3033 Solid Mechanics II
By
MAGENTHRAN KUPPUSAMY
Department of Engineering Mechanics
Faculty of Mechanical and Manufacturing Engineering
University Tun Hussein Onn Malaysia Johor
BDA 3033 - Solid Project
Analysis diving board by Macaulay’s methods and Strain rosette
1.1 Introduction of Diving
On a roof slab of a vast burial vault south of Naples is a painting of a young man diving from
a narrow platform. The discovery of the "Tomba Del Tuffatore" (The Tomb of the Diver) shows us
that the excitement and grace of diving from high places into water has lured people from at least 480
BC - the date established for the construction of the tomb. As with most sports dating back to ancient
times, little information on competitive diving has survived. The origins of modern diving can be
traced to two European venues - Halle in Germany and Sweden.
It was a traditional specialty of the guild of salt boilers, called Halloren to practise certa in
swimming and diving skills. The Halloren used to perform a series of diving feats from a bridge into
the River Saale. In 1840 in contact with the German gymnastics movement the world's first diving
association was formed. Most of its members were gymnasts starting their tumbling routines as a
kind of water gymnastic. Thus diving became very popular in Germany.
In Sweden wooden scaffolding was erected around many lakes, inviting courageous fellows
to perform diving feats. Somersaulting from great heights and swallow-like flights of a whole team
are common. The beginning of competitive diving corresponded to the rise of swimming clubs and
associations. In Germany, the oldest club called "Neptun" started international diving contests from a
lower board and from a tower in 1882. In 1891 the first diving rules were adopted and the following
year the first tables were published in Germany.
At the turn of the century, another branch of diving found numerous followers in the USA -
the bridge and artistic leaping. However, its development was stopped due to the high number of
serious accidents. In 1940 in Saint-Louis, with the support of the Germans, diving was added to the
Olympic programme. German divers dominated the springboard scene during the first two decades.
When high diving from a platform was introduced in 1908, the Swedish athletes dominated these
contests.
BDA 3033 - Solid Project
1.2 Introduction of Frontier III - Cantilever Diving Board
Figure 1: Frontier III - Cantilever Diving Board
The Frontier board is timber reinforced and encased in fiberglass for durability and
appearance. A non-slip top ensures maximum safety. There are no unusual climate
restrictions to consider, the boards are designed to be exposed to the elements and live for
years.
Product features
The diving board includes a streamlined and cantilevered stand with spring.
The units are powder-coated Radiant White as Standard color
Made of strong steel, powder coated for increased corrosion resistance.
Stainless Steel Hardware - resists corrosion (the type of material)
Matching, slip-resistant sand tread - for maximum safety
Weight limit: 113 kg (maximum load)
Various Length of diving broad: 1.83m, 2.44m, 3.05m (maximum length)
All diving board and diving stand equipment is supplied with a comprehensive
instruction manual
Installation of all board and stand apparatus can be carried out without special skills
or materials by any home handyman
BDA 3033 - Solid Project
2.0 Problem Statement
A springboard or diving board is used for diving and is a board that is itself a
spring, i.e. a linear flex-spring, of the cantilever type. Springboards are commonly fixed by a
hinge at one end (so they can be flipped up when not in use), and the other end usually hangs
over a swimming pool, with a point midway between the hinge and the end resting on an
adjustable fulcrum.
Diving board is used in Olympic Games or other diving game. This study analyses
which diving board is have more deflection when 113 kg/1108.53 N loads applied. This study
also analyses the principle strain in the plane of rosette and the maximum in plane shearing
strain.
3.0 Objective
The main objective of this project study is to analyze the Frontier III - Cantilever Diving
Board using solid mechanics principles. The solid mechanic method use is stress & strain rosette to
find out the principle strain in the plane of rosette and the maximum in plane shearing strain.
By using Macaulay’s methods the maximum deflection in various length of diving board also
can calculate.
4.0 Scope
The analysis on air plane wing is carried out using the following basic concepts of solid
mechanics only
(i) Deflection of Beam
(ii) Principle strain in the plane of rosette
(iii) Maximum in plane shearing strain
The following assumptions are made in this study with respect to Frontier III - Cantilever
Diving Board
• The board is assumed to be horizontal
• The self weight of board is neglected
• The cross section is assumed as rectangular instead of air foil geometry
• Material is assumed to be Stainless steel with high strength