Karthick SubramaniPersonal Data

Date of Birth: July 14, 1988Address: E-216, Iris Court, Mahindra World City,

Chengalpattu District,Chennai, Tamil Nadu,PIN - 603002.

Phone (Mobile): +91 9741022853email: karthickaero1@gmail.com

Objective

To leverage my 4 years 3 months of simulation experience, program manage-ment skills in the NVH domain to a broader field of leading a program fromthe front as a NVH Lead in the automobile industry.

Areas of Interest

Vibration, Acoustics, Structural Dynamics, Program Management, Stress &Durability, Simlab, Hypermesh, Nastran, Optistruct, Powertrain DynamicSimulator (PDS), LMS Virtual Lab, Ricardo & Valdyn.

Education

2010-2012 M.Tech in Aerospace EngineeringIndian Institute of Technology, Kharagpur.• CGPA: 8.2 / 10.00

2006-2010 B.E in Aeronautical EngineeringPark College of Engineering & Technology, Coimbatore.• Percentage : 80%

Work Experience

Company Mahindra & Mahindra Ltd,Chennai - India.

Dates February 2016 - Till NowPosition Held Lead EngineerDepartment NVH Powertrain - CAE

Company General Motors Technical Centre India Pvt Ltd,Bangalore - India.

Dates August 2012 - December 2015Position Held Senior EngineerDepartment Powertrain - NVH Transmission CAE

Main Activities Powertrain Modal Analysis& Responsibilities Modal frequencies of the powertrain model is calculated

by simulation to check, whether it matches with the ex-citation frequency of the engine. Through this analy-sis, we will make sure that the Powertrain bending fre-quency is above the excitation frequency of the engine.This analysis is used in the initial design phase to un-derstand the dynamic characteristics of the Powertrain.NVH design suggestions also provided to improve thebending frequencies of the Powertrain.

Force Response Function Analysis [FRF]Determining the response (Point & Transfer Mobility) atthe mount bracket side, Crankcase, Bedplate and othercomponent of the Powertrain model for various imbal-ance loads like Torque converter imbalance loads, recip-rocating imbalance loads and rotating imbalance loads.Compliance, Mobility and Inertance analysis has beenperformed to check the dynamic characteristics of thecomponents.

Mount Boss Static Stiffness and Dynamic Stiff-ness AnalysisDetermining the Mount Boss Free - Free stiffness of thePowertrain model by Inertia Relief Method. Transla-tion and Rotational Stiffness of the bosses are calculatedfrom the analysis and the results are compared with theTarget limit. Boss height varation study and additionof gussets around the bosses are also studied. Combinedboss stiffness for all bracket mount is calculated. Designmodifications are suggested to improve the boss stiff-ness values. Boss stiffness will play an important rolein performing NVH analysis at Vehicle level and also itgives boundary conditions to perform component levelanalysis.

Mount Bracket AnalysisThis analysis has been done both at the assembly leveland sub-assembly level. Mount bracket plays a huge rolein the vibration transfer path analysis. Mount bracketdesign should be optimized and its modal frequenciesshould be higher for better NVH level at the vehicleside.

Main Activities Radiated Noise Analysis& Responsibilities Analysis to predict the radiated noise from the Power-

train model for various loads like Engine load which in-cludes inertia load and combustion load, then gear meshload and chain load. Engine loads for various rpm isobtained from LMS Motion view and those loads areapplied at the bearing locations of the Engine and fre-quency response analysis is done to check the surfacevibrations of the powertrain. Suggestions are providedto the design team to improve the dynamic characteris-tics and NVH level of the powertrain.

Computer Skills

Operating Systems Windows 7/2003 Server/XPLanguages / Scripts C and MATLAB

Software / Applications SimLab, Hypermesh, Optistruct, MSC Nastran,LMS Virtual Lab, Abaqus, ENGDYN, VALDYNLATEX/Beamer, Tecplot, Open Office/MicrosoftOffice, Adobe Photoshop/Illustrator

Project

M.Tech. Dynamic instability characteristics of thin plate likeThesis slender beam with internal damage subjected to follower

loadUnder the guidance of Prof. Prosun Kumar DattaAn anisotropic damage based on the concept of stiffness reductionis modelled into a composite. The objective is to study the effectsof follower force on such a composite beam. Method of multiplescales has been used to determine the regions of instability due toparametric resonance. The work focuses on the effect of damageparameters like orthotropy, intensity, location, size on the insta-bility characteristics and also the effect of damping in damagedcomposities. Follower forces are forces that follow the direction ofthe deformation of the structure. Being a path dependent force,they are non-conservative in nature. The objective was to studythe effect of such forces on Plate like beam using FEM.

Publications

Journal Karthick, S. and Datta, P.K., “Dynamic Instability Char-acteristics of Thin Plate like Beam with Internal Damage Sub-jected to Follower Load”, International Journal of StructuralStability and Dynamics, 15(3), 2014.

Personal Skills and Competance

Mother Tongue TamilOther Languages English and Hindi

Academic Skill Participated and Won many prizes in Glider Competi-tion and Poster Presentation in college level.

Organization Skill Program Management, While working in NVH Team,Ihave parallely working as a Program manager.Team building activity Organizer, or and Team Off-site(Organizer).

Personal Interests Long drive, Trekking, Swimming, Table Tennis andReading Books.

Karthick S

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