The occupants of motor vehicle would suffer severely as well as its structure would
be subjected to excessive fatigue loading if the chassis is provided with direct transmission of
the loads carried by rolling wheels of the vehicle. To safeguard the working parts of the motor
vehicle against fracture or break down due to continued and severe stresses on the engine and
the transmission systems as well as body work the vehicle components or axels should be
properly suspended. Moreover if the front and the rear wheel axels are allowed to run in
bearings rigidly attached to the frame, extremely uncomfortable rides would be resulted. To
avoid the transmission of road effects to the passengers while travelling in vehicles on uneven
ground, it is, therefore, necessary that the wheels and the axels should be insulated from the
frame. For this purpose, suspension systems are used. A good suspension should have
springiness and damping. A spring is liable to overshoot its original position and start
bouncing up and down if energy is not absorbed. Springs are mounted on a rubber packing to
reduce noise and add more softness. In order to provide a comfortable ride to the passengers
and avoid additional stresses in motor car frame, the car should neither bounce or roll or sway
the passengers when cornering nor pitch when accelerating. For this purpose the virtual
prototype of suspension systems were built in software MSC ADAMS/CAR and suspensions
for truck were analyzed keeping in mind the optimization of suspension parameters.
Sunil R. Kewate, Ravina V. Vaman, Suvarna V. Karke
Today’s industry demands the replacement that gives
versatile, efficient, comfort and cost effective equipment while at the
same time providing more flexibility along with significant savings through increased
productivity. Also the interaction happened during the development of an activity include
investigation of available methodologies, finding the drawbacks in the existing system,
creation of new innovative ideas, checking the feasibility of ideas, gathering of relevant
information, application of theoretical knowledge for designing of system, verification using
computer oriented technologies, finally implementation of best solution gives us the
opportunities to come true is the replacement of suspension system. Four link type suspension
systems have been widely applied to vehicles, from the horse-drawn carriage with flexible leaf
springs fixed in the four corners, to the modern automobile with complex control algorithms.
In this paper, by using ADAMS/Car software, it can be included that how quickly creates
assemblies of suspensions and full vehicles by defining vehicle subsystems, such as front and
rear suspensions, steering gears, anti-roll bars, and bodies. Based on these subsystems on their
corresponding standard ADAMS/Car templates and then analyzed them to understand their
performance and behavior and the software enables one to work faster and smarter, letting one
6-12 have more time to study and understand how design changes affect vehicle performance. Also
this software explores the performance of one’s design and refine one’s design before building
and testing a physical prototype and analyzes design changes much faster and at a lower cost
than physical prototype testing would require.
Sunil R. Kewate, T. V. Chavan, Jayshree A. Suryawanshi
nergy efficiency is one of the essential needs of designing any component.
Therefore, both the industry and governments are eagerly searching for new energy efficient
solutions, which will both address this rowing supply in industry’s point of view, turn a profit.
The internal combustion engines are of a great concern as entire world works on locomotive
industry. Hence efficient performance of IC engine is of great concern. Pendulum type
combustion engine is a type of combustion engine and is newly innovated concept engine.
Currently there are no steps taken in development of pendulum engine and also there is no
valve gear train mechanism designed yet. So the concept of valve gear train mechanism for
this type of engine comes in mind for research work. As the power of engine increases the size
of engine also increases. Hence, the engine becomes bulky. But for a pendulum type
combustion engine which is under developing stage in R and D section, the size of cam
remains same for existing increased power and also the conventional valve gear train cannot be
suitable for this type of engine. In this paper, it introduces the detailed design, development
and analysis of valve gear train mechanism for pendulum type engine. The valve gear train
mechanism design includes following components: timing mechanism, cam shaft, bearing,
cam, follower, pushrod rocker arm, valve stem, valve guide, spring, guide valve. In this paper
work, the forces which acts on the system are calculated and also the thermal analysis of valve
and structural analysis of follower, camshaft is studied using software and then results shown
in tabular form.
Patil Divyesh Sakharam, Deokar Rohan G,V. K. Tripathi
This works aims towards the developing strategies in the area of structural
optimization and to implement these strategies in design processes. The steering knuckle has
been chosen as a study component in this study. The objective of this project study is to reduce
the mass of an existing steering knuckle component of a racing car model by applying
topology optimization technique. Finite element software HyperWorks which contains several
modules is used to achieve this objective. Hypermesh is used to prepare the finite element
model while Optistruct is utilized to carry out static analysis and topology optimization. Static
analysis is carried out for four load cases namely bumping, braking, steering and in the last
load case, these three load cases considered simultaneously for extreme condition analysis.
Optimization method used in this study has succeeded in reducing the mass of an existing
knuckle component by 12.5%. Furthermore, for weight reduction, Aluminium alloy is
compared with forged steel in order to suggest even lighter design proposal.
Clinical Decision Support System (CDSS) is a tool which helps doctors to make
better and uniform decisions. There are many existing systems present which are used for
diagnosing the diseases. For different systems algorithmic aspect changes as per requirement.
For every approach there pros and cons. Selecting the positive aspect and overcoming the
problems is the main motive. There is large amount of heart related data present, which is in
unstructured format. Hence by analyzing the data and formatting it into structured manner
helps for making the decision. For diagnosing the disease there are many ways in which heart
related diseases can be diagnosed and treatment can be provided.
The main objective of this work is to do experimental investigations using DOE
methods to optimize the direct injection (DI) single cylinder diesel engine with respect to
brake power and other performance Characteristics. For test A single cylinder 3.5 kW diesel
engine was selected for test. Four parameters, Injection Pressure (IP), Load (L), Fuel fraction
(FF) and Compression ratio (CR) was varied at three levels and the responses brake power,
bsfc, volumetric efficiency and HC was investigated. The optimum n values of the response
could be predicted using Signal-Noise ratio(S/N ratio) and optimum combination of control
parameters were specified. Results of tests showed good agreement with predicted quantities
for optimized results. Thus the relationship between the diesel engine parameter &
performance characteristics, could be understood using design of experiments. The best results
for brake power (BP) was observed at increased IP, Load & the emissions were reduced The
results of the study revealed some optimum combination of a Mixed biodiesel blend
,compression ratio, nozzle opening pressure & load which produces maximum multiple
performance of diesel engine with minimum emissions from the engine, best optimum
combination for brake power at 190 injection pressure, at 6 kg load, blend of B15 and at15
In this paper, presents the optimization of bead geometry parameters using
TLBO technique. This paper presents the effect of welding parameters like wire feed rate,
welding voltage, welding speed and gas flow rate on bead geometry parameters of AISI
3CR12 material during welding. A plan of experiments based on TLBO technique has been
used to acquire the data. Central composite Design Matrix and analysis of variance
(ANOVA) are employed to investigate the bead geometry parameters of AISI 3CR12
material & optimize the bead geometry parameters. Finally the conformations tests have
been carried out to compare the predicated values with the experimental values confirm its
effectiveness in the analysis of penetration.
Machining of Inconel 718 is a challenge due to its mechanical, thermal and
chemical properties and thus results in poor machinability. This paper presents the
experimental investigations on the influence of cutting parameters on turning of Inconel 718
with AlTiN and AlCrN coated carbide inserts. Machining temperature and tool wear were
studied. This investigation suggested that for PVD coated AlTiN and AlCrN carbide inserts,
cutting speed of 30 m/min, feed rate of 0.03 mm/rev and depth of cut of 0.5 mm were
optimum for producing best cutting results.
Filter sheets are non-standard components and hence the guidelines for design
are loose under the ASME and the TEMA code. The usual engineering practice is to extend
the ever current design is available with an increased factor of safety. However this results
in excessively heavy designs, resulting in increasing costs (e.g. Material, transport,
assembly and installation).Hence in such designs there is maximum scope for optimization.
Optimization goals are focused on tube sheet weight reduction – By providing appropriate
supporting to the tube sheet. Shape Optimization and Designing an optimal thickness for
filter sheet assembly component for maximum economy. The Project execution phases
consist of Analyzing a proposed for Material optimization and submission of reports to
clients, (In this phase we analyze only 1/4th portion of the assembly) Based on approval and
feedback of client, designing the entire assembly and submitting drawings and models for
approval) On approval of client proceed with analysis of the entire model created in phase.
Performing actual hydro tests on the assembly after manufacturing, and evaluating
effectiveness of FEA analysis. The challenges for FEA validation are Performing Shape
Optimization and making filter pattern in accordance with manufacturability and ergonomic
evaluations. The outputs of FEA work shall be a shape Optimized Filter Sheet assembly,
with maximum productivity and maximum economy. Deformation and Stress Certification
for performance in Hydro Test.