ABSTRACT
The subject gives a brief look on the suitability of composite leaf spring on vehicles and their advantages. Efforts have been made to reduce the cost of composite leaf spring to that of steel leaf spring. The achievement of weight reduction with adequate improvement of mechanical properties has made composite a very replacement material for convectional steel. Material and manufacturing process are selected upon on the cost and strength factor. The design method is selected on the basis of mass production.
From t ....etc

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INTRODUCTION
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. They typically rely on the fluid dampening of a gas such as nitrogen in the cylinder. Important performance specifications for gas springs include absorber stroke, compressed length, extended length, maximum force (P1), and maximum cycles per minute
The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compressio ....etc

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spring technology



Background
There are several types of springs. One of the most common consists of wire wound into a cylindrical or conical shape. An extension spring is a coiled spring whose coils normally touch each other; as a force is applied to stretch the spring, the coils separate. In contrast, a compression spring is a coiled spring with space between successive coils; when a force is applied to shorten the spring, the coils are pushed closer together. ....etc

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Presented by:
Jeong Sik Yim
Heong Kook Joo
Dong Seong Sohn


ABSTRACT

The holddown Spring is one of the major components of a fuel assembly for PWR. It holds the fuel assembly firmly seated down on the lower core plate and allows the FA axial movement caused from the irradiation growth of guide thimbles. Depending on the up-lift force of a fuel assembly, from 2 to 4 leaves are assembled to be a set of a spring pack and it is fixed on the frame of the top end piece by screw. The spring can deflect so greatly during operat ....etc

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GAS SPRINGS
SEMINAR REPORT
Submitted by
BIBIN BABU
S7M1, Roll No: 27113
Department Of Mechanical Engineering
College of Engineering, Thiruvananthapuram – 16
October, 2010

ABSTRACT
A gas spring is a type of spring that, unlike a typical metal spring, uses a compressed gas, contained in a cylinder and compressed by a piston, to exert a force. Gas springs are used in automobiles, where they are used to support the weight of doors while they are open. They are also used in furnit ....etc

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INTRODUCTION
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. They typically rely on the fluid dampening of a gas such as nitrogen in the cylinder. Important performance specifications for gas springs include absorber stroke, compressed length, extended length, maximum force (P1), and maximum cycles per minute
The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compressio ....etc

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SYNOPSIS
In the present scenario of automobile industry manufacturers are trying to produce comfortable and safe vehicles which the consumers are looking for. A shock absorber is a damping element of the vehicle suspension, and its performance directly affects the comfortability, dynamic load of the wheel and dynamic stroke of the suspension. The conventional type of shock absorbers has got the main drawback that it causes foaming of the fluid at high speeds of operation. This results in a decrease of t ....etc

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Active Suspension System

COMPONENTS



A Computer or an electronic control unit (ECU)

Sensors

Actuator or Servo

Adjustable shocks and springs


Functions of Active Suspension

Improves driver control, safety and stability, with or without a load .
Eliminates sway and reduces roll on corners
Reduces axle wrap
Maximum safety
Absorbs load, rather than resisting it, thereby ensuring a much more comfortable ride
Eliminates the need for fitting extra blades which harden the ride
Better handling a ....etc

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ELECTRONIC SHOCK ABSORBER
INTRODUCTION
Shock absorbers must absorb or dissipate energy. One design consideration, when designing or choosing a shock absorber is where that energy will go. In most dashpots, energy is converted to heat inside the viscous fluid. In hydraulic cylinders, the hydraulic fluid will heat up, while in air cylinders, the hot air is usually exhausted to the atmosphere. In other types of dashpots, such as electromagnetic ones, the dissipated energy can be stored and used later.
DESCRIPTION[/ ....etc

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BOSE ELECTROMAGNETIC SUSPENSION
Abstract:
Now a dayâ„¢s comfort and control are two major aspects in field of design and manufacturing. At present condition spring and damper system are used as shock absorber in automobiles. As concerned to comport and control their system are lagging to provide optimum level of performance. With view of increase the comfort and control electromagnetic suspension system introduced to fulfill the requirement of modern days. This seminar intended to explain the resurgence of interest ....etc

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i am b.e. mechanical student,i need seminar & ppt on composite leaf springs ....etc

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GAS SPRINGS
ABSTRACT
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compression direction. In an extension gas spring the shock absorption or dampening occurs in the extension direction. Important physical specifications for gas springs include the cylinder diameter or maximum width, the rod diameter, mounting, and body materi ....etc

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To find the stiffness of closed helical spring ....etc

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INTRODUCTION
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. They typically rely on the fluid dampening of a gas such as nitrogen in the cylinder. Important performance specifications for gas springs include absorber stroke, compressed length, extended length, maximum force (P1), and maximum cycles per minute
The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compressio ....etc

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Optimizing design of spring using genetic algorithm

Abstract:
This paper deals with the elaborate designed optimization technique
of coil spring sets. Attention is focused reducing the weight and
stresses are calculated keeping in to considerations the various
critical points. Graphical optimization the various critical points
graphical optimization technique is used for non-linear programming
.Maximum endurance shear stresses spring constant etc.. are taken as
the objective function also we have mainly ....etc

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sir i am k.venkatesh doing a project on analysis of leaf springs, i want the properties of steel materials and the complete details of the project. i am doing REPLACING THE UP-TURN EYE OF A LEAF SPRING WITH BERLIN EYE. please give details about the properties of steel materials too. ....etc

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