1. JanarthananJ
#330A, 2 nd
floor, 2nd
street,
Talakaveri layout,
Amruthahalli, Bangalore-92
Email: jana_indian@rediffmail.com
Phone: +91 9886985186
Work Experience: 8+ years
 Assistant Manager: Volvo India pvt ltd, Bangalore, Dec 2012 to till date
 Lead engineer: Aviation Systems in General Electric India Technology Center, Bangalore, Feb 2012 to
dec 2012
 Senior Analysis engineer: CADES digitech Pvt. Limited, Bangalore, Mar 2009 to Feb 2012, Worked
as a consultant to Volvo for about two years
 Senior engineer: QuEST global, Bangalore, Aug 2006 to Mar 2009.
Educational Qualification
 Masters of Technology in Manufacturing Technology from National Institute of Technology (Formerly
REC), Trichy with 8.3/10 CGPA (2004 - 2006)
 Bachelor of Engineering in Production Engineering from Amrita Institute of Technology, Coimbatore
with 77% (2001 - 2004)
 Diploma in Mechanical Engineering from Thiagarajar Polytechnic, Salem with 90.6% (1998 - 2001)
Skill Set
 Analysis tools: Ansys Workbench, Ansys classic, Ansa, nCode
 Programming tools: Ansys APDL, MS-Excel macros, C, C++, Python script
Key accomplishments
 Developed strong fundamentals in stress analysis and multi axial fatigue life calculation (durability).
 Developed good knowledge on fatigue ev aluation of welded structure.
 Acquired product knowledge on Gas turbine, wheel loader machine, BHL, Excavator, Hauler,
Compactor and Paver.
 Developed customer focused research ideas, business effective communication and presentation skills
 Developed leadership skills by coordinating the team as technical leader
Career Interest
 Product design concept development, Field failure investigation, Design detail modification,
Optimization of design, research and development and team leadership
 Finite Element analysis – Methodology development for new components and correlation with tests
 Development of automated tools Using APDL macro, MS excel macro, Python scripts for workbench.
Analysis skills
 Static analysis: Linear and non-linear analysis, Contact Analysis, Cyclic symmetric analysis, Eigen
value Buckling analysis, Material non-linear analysis
 Dynamic analysis: Modal analysis, Modal analysis Random vibration analysis, Harmonic analysis,
Spectrum Analysis
 Analysis technique: Sub modeling, Axisymmetric analysis, Sub structuring, Component mode
synthesis (CMS)

2. Key Projects executed at VOLVO:
1. Super structure system to Wheel loader conceptualization and optimization:
Super structure is a load carrying member which is mounted over the rear chassis. Super structure supports
components like hydraulic tank, air cleaner, hoses and Diesel particulate filter. Super structure includes
vertical columns, cross beams and brackets to hold mounting components. It is a fabricated structure
manufactured by welding. A new super structure design is conceptualized and optimized for column
thickness and weld size. Effective notch method is used for evaluating the welds. Superstructure should
withstand the vibrations produced during the normal operation which is random in nature. PSD analysis is
performed. Concept design is developed on the scaled loads from the similar running machines. After proto
is built, loads are measured and concept design is verified and optimized. ANSYS workbench is used.
Sub structuring method (component mode synthesis) is used for FE model. This has reduced a total lead
time to complete the analysis. APDL macro was developed to integrate substructure method in ANSYS
Workbench.
2. Lifting unit to wheel loader concept design development
Lifting unit is for loading and unloading the materials operation which is the main function of the wheel
loader. Lifting unit is mounted over the front chassis. Lifting unit should be designed such a way that the
operator must be able to see through the lifting frame to see the bucket loading and unloading. Lifting unit
assembly includes bucket, lifting frame, bucket actuation links and attachment bracket. Static load cases
are decided upon the operation of the loading unit. Stress linearization and ideal plastic methods are
applied in the detailed static evaluation. Multi-axial fatigue evaluation is performed from the measure force
signal. Unit load cases are performed and combined with the force signal to obtain stress history. Rainflow
counting and Minors rule are applied to obtain the life. Lifting frame profile, welds and thickness are
optimized to save the cost. A new attachment bracket was developed. This attachment bracket is designed
to manufacture by fabrication which would save cost by 50%. Earlier attachment brackets were casted
structure. Design modifications are suggested based on the stress analysis.
Ansys workbench is used. APDL macro is developed to orient the lifting unit to different load cases which
resulted in man hour saving. Team size is 3.
3. Dumb body conceptualization to heavy hauler machine
Articulated haulers are for carrying material in rough terrain and road conditions like mining. Material
carrying container is called dumb body. A new dumb body is developed. Dumb body shape is round shape
which is a new concept whereas earlier shapes were trapezoidal shape. This new concept resulted in
carrying more volume of material for the same size of dumb body and less cost for manufacturing. Load
cases for evaluating dumb body is derived. Load cases are derived from when vehicle moves over bump,
when vehicle takes a turn, when vehicle is applied sudden brake and tipping. Boundary conditions and
loading methods are developed to simulate the dumb body behavior during those load cases. Material
inside the dumb body is simulated by hydrostatic pressure. .
Ansys workbench is used. Thickness and profile shapes are optimized to save material. Team size is 2.
4. New product development – compact excavator
A new tracked compact excavator is being developed. Major structural components are arm, boom, bucket,
upper frame, lower frame and blade. Super element for each component is created. Boom cylinder, arm
cylinder and bucket are modelled as beams. All the components are assembled. The bucket load for
different load case conditions are calculated from this super element model. Then, calculated loads are

3. applied on the model to evaluate the life of the component.. Component which is being analyzed is
modelled by solid elements and other components are kept as it is. Pins and frictional contacts are provided
to make the simulation close to the test. Welds and notches are modelled. Test is performed on proto
machine. Strains are measure on the critical locations. Both simulation data and test data are correlated.
Global team size 4.
Strength verification of lifting frame of wheel loader :
Strength of lifting frame has been verified by carrying out linear elastic analysis and ideal plastic analysis. A
number of static load cases have been analyzed. A fatigue analysis based on time signals has also been
carried out.
 Notches have been created at the weld location and FE model and contact pairs have been created in
workbench
 Linear contact elastic analysis is done for different load cases.
 Stress linearization is done in load cases where it fails to check enough plasticity is available to
distribute the forces to neighboring locations.
 Ideal plastic analysis is done where stress linearization is not giving enough information.
 Then time based fatigue analysis is carried out to check against fatigue requirement.
Strength verification of L90 steering lock to wheel loader:
Steering lock prevents the relative lateral movement between the front frame and rear frame at the time of
servicing and at time of transportation of machine. In this analysis the steering lock pin and steering lock pin
welds are analyzed. The criteria for static loading are decided on the basis of moment produced due to the
steering cylinders. Further the maximum loading condition in axial, transverse and oblique direction is
calculated for the given lug and pin material and obtained forces due to moment produced are compared. The
steering lock pin and steering lock pin welds are designed safe for the static loading and shakedown loading.
 Notches have been created at the weld location and FE model and contact pairs have been created in
workbench
 Linear contact elastic analysis has been done for tensile and compressive load of same magnitude.
 Ideal plastic analysis is carried out as the stress is beyond allowable in stress linearization
 Shakedown analysis (ratchetting) is to be evaluated for the locations which are undergoing local plastic
deformation. This is required to prove that after the plastic deformation, the material behaves as linear
material.
.
Company Name: General Electric, Bangalore
Current Designation: Lead Engineer
Period of Work: Mar, 2012 to Dec 2012.
HCF analysis for aero engine built up unit:

4.  Structural verification for aero engine external built up unit by harmonic analysis and static analysis.
Components include fuel manifold and supporting brackets, Environment control system ducts, ball
joint, axial joint, etc.
Key Projects executed at CADES:
Worked as consultant to Volvo India pvt limited from feb, 2010 to Mar 2012. .
1. Gas Turbine Compressor Disc Analysis (pilot project):
An effort has been made to study a 6 stage compressor disc assembly in terms of requirements on stress,
growth and over speed. The assessment has been done using a finite element analysis for the given
geometry, material, loads and boundary conditions for one flight cycle. The analysis is done for two cases,
one for a conforming stage 2 disc and one for a non-conforming disc for stage 2. The specific results
considered are stress (Maximum of von-Mises and Maximum Principal Stress) to qualify life, radial
displacement to quantify growth, average weighted mean radial and hoop stress to qualify performance
under over speed.
Challenging part was to identify the input gap and design criteria as it was a pilot project. There was also a
thermal mapping to be done on the FE model from the data given in the excel format. This was done by
using hypermesh.
2. Structural Analysis and Design Optimization of Nuclear reactor Outer vessel:
ITER is an international project to design and build an experimental fusion reactor based on Tokamac
concept. ITER India is responsible for contribution from India. CADES involved in the verification and
optimization of nuclear reactor outer vessel structure and reactor support column. Bots for mounting the
reactor support column on to the concrete is designed as per the civil code. Analysis was performed using
ANSYS software and Hypermesh. Column must withstand seismic load. Single point spectrum analysis was
performed for the seismic load. Team size 3.
3. Design Optimization of 7FA Rotor wheel Undercut:
High edge of contact stresses are observed in compressor wheel post dovetail slot at contact end points.
These locations are life limiting. The purpose is to incorporate a undercut in the wheel dovetail to reduce
edge of contact stresses(E-o-C). A Design of Experiment (DOE) analysis had been performed to optimize
the under cut to keep the edge of contact stress and fillet stress within the limit. On arriving at an optimized
design, detailed evaluation had been carried out on a 3D model. LCF, rotational speed variation and
frictional variation evaluation were performed.
Ansys software was used. APDL macro was developed to automate the creation of 2D geometry. 81
models were analysed. Creating each 2D model wuld take about an hour. .
4. 9FA stator casing CDC tweaking and FEA anlysis:
Finite element stress analysis for 9FA stator combustion Diffusion Chamber had been carried out using ANSYS
software. Horizontal Joint bolts design were modified to prevent opening up of halves during operation. This
project involves
 setting up FEA model
 Applying mechanical loads, thermal loads, contacts and other boundary condition through macro.
 Static analysis and post processing for different time point.
 Design modification of horizontal joint bolts
 VBA macro to automate post processing Excel sheets and PPTs.
7FAe+ turbine assembly tweaks analysis:

5. The tweaking analysis of turbine wheel assembly was done to include the latest geometry details and updated
material properties. It also includes standardizing method for 2D bolt modeling and applying contacts at rabbet
interferences & bolts and bolt holes locations.
The analysis involves,
 Creating 2D assembly model from 3D UG model
 Meshing using ANSYS preprocessor
 Calculating bolt thickness and thickness for the portions, which do not have, hoop capability.
 Applying thermal inputs, material properties, contacts, loads and boundary condition through macro.
 Running the analysis for different mission cycles.
 Elaborative documentation of geometry details, contact details, analysis assumption, material property
graphs, joint characteristics study, result plots and all other input detail.
Bolt hole Analysis of 6FAe+ Turbine Wheel Stage 1:
This project was initiated during a manufacturing issue in France on the Turbine wheel stage 1 counter bore.
During manufacture a hole larger than specified was made, thus additional removal of material expected to
wheel life. Hence analysis of this location is carried out on 3d FEA model. Project involves,
 Disfeaturing and chunking UG model to suite FEA model
 FEA model generation Using ANSYS meshing
 Application of bolt pretension ,loads, Boundary condition and contact through macros
 Study of stresses around bolt hole and rabbet for different time points.
Hydro turbine Bottom ring analysis:
Stress and buckling analysis of bottom ring had been carried out to check the structure's safety under the given
loading conditions. We have modified the web for better stiffening of the structure.
It involves
 UG model chunking
 FE model preparation using ANSYS preprocessor (Solid 92)
 Designing the rib
 Applying loads and boundary condition through macro for different operating conditions.
 Checking bulking strength of bottom ring using eigen value buckling analysis
Centrifugal compressor impeller structural Analysis:
The objective of the analysis is to perform stress analysis of impeller to determine structure's safety level,
subjected to various rotating speeds and due to interference at impeller bore length with reference to material's
allowable stress limits.
The analysis involves,
 preparing sector model of impeller using UG chunking
 Preparation of FE model using ANSYS preprocessor (SOLID92 element)
 Application loads, boundary condition and contacts for different operating conditions
 Evaluating natural frequencies and
 The modal shape
M. Tech THESIS DESCRIPTION:
Title: Neuro fuzzy based Fault diagnosis system for robot Manipulator
Description: The robot manipulators are often sent to work in hazardous work environment where humans
difficult or impossible to work. Unexpected repairs in these places results in loss of time, money and causes
danger to the environment. Hence, a robust fault diagnosis system has been proposed based on hybrid of
neural network, an online approximate of the robot behavior, and fuzzy logic, a rule based knowledge base
system for decision making, to identify and isolate the fault in online. Simulation of this work has been done by
mathematical modeling of the SCORBOT ER- 5 u robot using MATLAB and C++ coding and MATLAB
SIMULINK to illustrate the effectiveness of the proposed approach.

6. Achievements and Awards
 Passed in certificate ‘ B ’ examination in NCC with ‘ A ‘ ranking
 Presented in the National Level Technical Symposium TECHNOVATION 2003 Paper presentation ,
Coimbatore institute of Technology, Coimbatore
 Won the second prize in Mind Bogglers event during PRODIGY 2005, NIT, Trichy
 Actively participated in the various CAD Modeling contest
 Won the first prize in weight lifting in Annual sports, NIT, Trichy
Personal Details
Date of Birth: 12th May 1983
Passport No: F9238638
Father’s Name: xxx
Gender: Male
Nationality: Indian
Permanent Address: 2/498, Velu nagar 2nd street, Seelanaikenpattti, Salem-636201
Linguistic Proficiency
To write - English, Tamil
To read - English, Tamil
To speak – E nglish, Kannada and Tamil
Interests and Hobbies
Cricket, Chess, music, Reading Magazines…
DECLARATION:
I, xxx hereby declare that the above written particulars are to the best of my knowledge and belief.
Date: Yours Faithfully,
Place: xxxxx---------------------