Pages in category telescopic shock absorbers the following 6 pages are in this category, out of 6 total. By comparing the results for different materials, the stress value is less for titanium alloy. In a vehicle, it reduces the effect of traveling over rough ground. Structural analysis and modal analysis are done on the shock absorber by varying material for spring, spring steel and beryllium. Find telescoping shock absorber related suppliers, manufacturers, products and specifications on globalspec a trusted source of telescoping shock absorber information. The hydraulic telescopic shock absorber controlled by air pressure is capable of changing its damping force depending on the air pressure in air springs. The model is also changed by changing the thickness of the spring. The landing gear shock absorber is an integral component of an aircrafts landing. Construct and test a critical damping system for a spring.
In a telescopic shock absorber comprising piston means incorporating damping passage means therethrough and a piston rod reciprocable in a working chamber containing a damping fluid and connected to a compensating chamber by first and second respective oneway passage means for controlling flow of the damping fluid from the working chamber to the compensating chamber and from the. Technical information mga 8 telescopic shock absorbers last updated 032101 if you are converting your oem rear shock absorbers to the telescopic type, please take a moment to read the following information on british automotives part vbpba1. Shock absorbers or dampers are used to maintain the contact between the vehicles tires and road surface, to absorb the vibrations generated from the road disturbances and recently they are used in energy harvesting. The role of the shock absorber is to absorb and dissipate energy upon impact, such that the forces imposed on the aircrafts frame are tolerable. Telescopic shock absorber and its construction youtube. For this study a shock absorber of hero honda bike has been taken. In this project a shock absorber will be designed and. In a telescopic shock absorber comprising piston means incorporating damping passage means therethrough and a piston rod reciprocable in a working chamber containing a damping fluid and connected to a compensating chamber by first and second respective oneway passage means for controlling flow of the damping fluid from the working chamber to the compensating chamber and. The design is based on standard input values, such as sink speed, aircraft weight, load factor etc, using an. Design and analysis the design of variable damping pneumatic shock absorber is been created using cero. The telescopic version is lighter but requires higher ground clearance for light aircraft. Research paper analysis of shock absorber using different. Being a load bearing member, it basically acts as safety item last longer and cost more than shock absorber as it can withstand a higher load it is basically used in passengers cars, jeeps, and lcvs.
Damping elements shock absorbers shock absorbers are required to dampen the vibrations in use hydraulic telescopic shock absorbers convert the kinetic energy of the vehicle body and wheel vibrations into heat primarlly requirements for comfort and driving safety types of shock absorbers 1. The aim of this article is to provide a systematic approach to perform computational simulation and optimization design of parameters matching selection for a nonlinear coupling shock absorber. Shock absorbers are a critical part of a suspension system, connecting the vehicle to its wheels. A twintube shock absorber of a sealed for life construction comprising an outer cylinder 1, an inner cylinder 4, a piston rod 5 housed within the inner cylinder 4, a guide member 8 to locate the piston rod 5 within the inner cyliner 4 and a metal insert seal 10 located inside the top end of the outer cylinder 1, above the guide member 8, and slidably embracing the piston. Design, modeling, and analysis of a novel hydraulic energy. The research of undercarriage buffer system is one of the key technologies for the design of aircraft. In this paper, a novel hydraulic energyregenerative shock absorber hersa is developed for. Design of the hydraulic shock absorbers characteristics using. Therefore, in addition to the analysis of the hydraulic energyregenerative. This video is related with a type of a suspension system that is telescopic shock absorber.
Any other information relevant to the design of shock absorbers. For that purpose, fluid in the shock absorber is forced to flow through restricted outlets and valve systems, thus generating hydraulic resistance. Based on the analysis procedure as outlined in this chapter, algorithms were developed to determine the required stroke and piston length to meet the given design conditions, as well as the energy absorption capacity of the shock absorber. Design method for throttle holes area of telescopic shock. Following this analysis, it results that more than half of the component parts of a shock absorber can be found in all the shock absorbers because they are indispensable in the oscillation reducing process performed by a shock absorber. In this work suspension system is designed and a 3d model is created using catia v5 r21. One design consideration, when designing or choosing a shock absorber, is where that energy will go. Design and simulation analysis of an energy regenerative.
Bumper which will ensure passenger safety, with high strength to weight ratio through the static and having dynamic. The work can be divided into seven sections as follows, background research component analysis applicable theory. It is an invaluable handbook for those working in industry, as well as a principal reference text for students of mechanical and automotive engineering. The conventional and common type of the front suspension used in motorcycle is telescopic. The pressure model determines the internal pressures while flow model calculates the oil flow between the tricycle chambers. A shock absorber or damper is a mechanical or hydraulic device designed to absorb and damp shock impulses. Design and analysis of front mono suspension in motorcycle. The main function of vehicle suspension system is to separate the vehicle body and passengers from the oscillation created by the irregularities and. This is a critical component for selecting the appropriate shock absorber because the machine must have sufficient strength to support the shock absorber as it resists the shock force. A physical model pressure model and flow model was adopted and implemented for the modelling of the tricycle shock absorber. All hydraulic shock absorbers work by the principle of converting kinetic energy movement into thermic energy heat. In this project a shock absorber is designed and a 3d.
Shock absorbers are mounted alongside or insi icmpc 2017 design and analysis of shock absorber. Working of shock absorber shock absorber work on the principle of compressionexpansion of. Structural analysis and modal analysis are done on the shock absorber by varying material for spring, spring steel and beryllium copper. Structural analysis and modal analysis are done on the shock absorber by varying material for spring the analysis persons. There are three common configurations that implement the oleo shock absorber. The design, modeling, and analysis of the hersa are demonstrated. Jun 27, 2017 this video is related with a type of a suspension system that is telescopic shock absorber.
Angular velocity radss f propelling force n c cycles per hour 1hr p motor power kw 3 st stall torque factor normally 2. Assessing the reliability of testing methods used for fluid telescopic shock absorbers in cars 83 eusama method. Alijanpour m, and kiasat ms, design and analysis of automotive bumper beam in low speed frontal crashes, thin walled strut. This paper presented a novel hydraulic energyregenerative shock absorber based on the traditional telescopic shock absorber. In this project a shock absorber is designed and a 3d model is created using proengineer. Design analysis of front and rear shocker mounting in vehicle suspension system. These are telescopic strut, articulating strut and semiarticulating strut. Hydraulic shock absorbers all hydraulic shock absorbers work by the principle of converting kinetic energy movement into thermic energy heat. Shock absorbers have controlled and predictable deceleration. Telescopic shock absorber advantages and disadvantages.
N polytechnic college virudhunagar unitiii railway engineering 2. An accurate mathematical model is proposed based on the hydromechanics theory. Advantages and disadvantages mono shock suspension. For the nonlinearity relation of the design area of throttle holes with the design velocity, there is no any accurate and reliable method for throttle holes area design of telescopic shock absorber. An automobile shock absorber contains springloaded check valves and orifices to control the flow of oil through an internal piston see below. March 2015 structural and modal analysis of shock absorber. Shock absorber used in twowheeler for providing better handling, and braking, safety and comfort. Pdf design analysis of front and rear shocker mounting. Request pdf characteristic simulation of telescopic shock absorber according to the. One design consideration, when designing or choosing a shock absorber. Rathod abstract in this paper, design parameters and performance analysis of telescopic shock absorber has been carried out. In this project, after make an experiment and analysis, the problem of bouncing problem of shock absorber is come from the spring. A shock absorber or damper is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Main components of shock absorber consist of following part see fig.
A shock absorber in a car is designed to damp the oscillations of the suspension. Halliday, resnick, and walter, 5th edition, chapter 16, special attention to section 168 damped simple harmonic motion. In this project a shock absorber is designed and a 3d model is created using catia v5. Overall, this project acquire s the skills of using software and skills to investigate the p roblem. March 2015 structural and modal analysis of shock absorber of. Design and simulation analysis of an energy regenerative electromagnetic shock absorber for vehicles xiangyu xiao2, yanan wang1,3,4, xin he1,3,4, qingfeng li1,3,4 and hua li1,3,4 1school of mechanical engineering, shandong university, jinan 250061, p.
There are two basic shock absorber designs in use today. This channel is for mechanical diploma students channel. Knowing this, the design with parameters can play a. Abstract shock absorber is a mechanical device designed to smooth out or damp shock impulse. Mechtech knowhow currently it has videos related to automobile engineering. Standards may be reproduced, stored in a retrieval system in any form or. Generally, this term is used to denote a particular era of motorcycles, and is most frequently used when describing offroad motorcycles. Ep1006045a2 shock absorber or telescopic suspension. The telescopic shock absorber is one of the suspension components. In this project a shock absorber is designed to automobile of capacity 150cc and a 3d model is created using nx unigraphics 10. Advantages and disadvantages mono shock suspension posted by indigkom posted on 5. Introduction a shock absorber or damper is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Redesigning car shock absorbers using parameterized. China 2department of automotive engineering, school of transportation science and engineering, beihang university.
S the stroke of the shock absorber 85% efficiency, in. The shock absorber handbook, 2nd edition provides a thorough treatment of the issues surrounding the design and selection of shock absorbers. A systematic approach on computational analysis and. Finally, by observing the structural analysis results, the stress values obtained by software is.
The design of spring in suspension system is very important. In this project a shock absorber will be designed and a 3d model which will be created is by using proengineer. This project focuses on the design and analysis of an oleopneumatic shock absorber strut for nose landing gear system for a lightweight aircraft having tricyclic configuration. Characteristic simulation of telescopic shock absorber request pdf. The analysis is done by considering loads, bike weight, single person and 2 persons. So the design of spring in suspension system is very important. Apr 06, 2008 s the stroke of the shock absorber 85% efficiency, in. Sep 26, 2016 telescopic shock absorber and its construction easy explanation. Analysis of damping force of two wheeler front suspension. Design and analysis of shock absorber using fea tool free download. The need for dampers arises because of the roll and pitches. Structural analysis is done on the shock absorber by varying material for spring, spring steel and beryllium copper. Design and analysis of a shock absorber johnson, davis jose, anthony tony.
Design and analysis of suspension system for an all terrain vehicle shijil p, albin vargheese, aswin devasia, christin joseph, josin jacob. The design of the shock absorber is shown in figure 2. Design and analysis of a shock absorber rohit verma cadd centre,agra abstract a shock absorber or suspension system is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. During the late 1970s and 1980s, motorcycle rear suspension design and performance underwent tremendous advances. Analysis of damping force of two wheeler front suspension hashmi ayas jameel ahmed me production, mechanical engineering. The need for dampers arises because of the roll and. Design and structural analysis of telescopic shock absorber abstract a suspension system or shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Throttle holes area of telescopic shock absorber for electric vehicles influence the ride comfort, driving harshness and the other parameters design. Experimental setup done proved to obtain 15 w of power while driving at a speed of 15mph on a b class road.
Pneumatic and hydraulic shock absorbers commonly take the form of a cylinder with a sliding piston inside. A suspension system or shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. The design of spring in the suspension system was also studied. Design and analysis of shock absorber using fea tool. Twin shock refers to motorcycles that have two shock absorbers. Pdf in a vehicle, shock absorbers reduce the effect of traveling over rough ground, leading to improved ride quality and vehicle handling. In this paper, design parameters and performance analysis of telescopic shock absorber. The shock absorber comprises a compensator consisting of at least one flexible and preferably elastic braiding 8, mounted outside onto the cylinder 1 of the shock absorber, sealfastened with its own ends onto said cylinder by means of suitable fastening means 9, 10 and constructed in such a way as to define at its interior a chamber with variable volume c occupied by oil and. The cylinder is filled with a fluid such as hydraulic fluid or air.
The main part for a vehicle suspension is the shock absorber, which is manufactured for reducing shock impulse. It is possible for the vehicle to be driven, but if the suspension drops from the driving over a severe bump, the rear spring can fall out the design of spring in suspension system is very important. A telescopic shock absorber damper can be compressed and extended. Requirements for telescopic type hydraulic shock absorbers for automotive suspension. Design of electromagnetic shock absorbers for automotive suspensions article pdf available in vehicle system dynamics 4912. By reducing the diameter, the weight of the spring reduces. Design of the hydraulic shock absorbers characteristics. The shock absorbers duty is to absorb or dissipate energy. In this project, after make an experiment and analysis, the. Research into the history of dampers, racing dampers and the concept of the damper in formula sae style vehicles, governs the direction of the new design. Design and build a prototype shock absorber objective. Tech student, dept of me, vignan university, india. Shock absorber or shox as they are popularly known. Since 1970, when gabriel introduced the first shock absorber in america, gabriel is a leader in innovating ride control product for the market place.
In most shock absorbers, energy is converted to heat inside the viscous fluid. Design and analysis of front mono suspension in motorcycle 1karthik dhayakar, 2t. Damage will occur if the following instructions are not followed. The design of the variable damping pneumatic shock absorber is carried through cero software. Formula sae shock absorber design abstract the design and manufacture feasibility of a damper customised to a formula sae style vehicle has been considered in this paper. The optimized design of regenerative shock absorbers has been deeply studied. Design and analysis of shock absorber international journal of. Mar 10, 2016 telescopic shock absorber advantages and disadvantages 9 out of 10 based on 699 ratings. Also the shock absorber design is modified by reducing the diameter of spring by 2mm and structural, modal analysis is done on the shock absorber. A theoretical mathematical model with nonlinear coupling for shock absorber is induced based on relative literature. To design the shock absorber assembles in between chassis and front part of car bumper shock load withstand. Research of the key technologies for undercarriage landing. For the purpose of the study the frequency response analysis called harmonic study in the. Pdf design and analysis of a shock absorber editor.
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