Noise and Vibration analysis for clients in the Automotive, Marine and Aerospace industry. The team uses robust simulation methods coupled with testing to address structural dynamic issues in mechanical, hydro-mechanical and rotary equipment type systems.

1. Noise & Vibration Analysis
Neilsoft has a specialist engineering team providing solutions for Noise & Vibration related problems for premier
clients in the Automotive, Marine and Aerospace industry. The team uses robust simulation methods coupled with
testing to address structural dynamic issues in mechanical, hydro-mechanical and rotary equipment type systems.
The problem resolution is via structure and airborne vibration & noise (N&V) source detection, test-CAE based
problem diagnosis, N&V path propagation study, virtual design improvements and test based verification. The N&V
solution offerings include:
Vibration control in vehicles and operating machineries
• Frequency response analysis and signature studies such as:
• Automotive passenger & commercial vehicles
• Powertrain Idle shake response at Steering wheel, Seat track & I/P
• Road induced shake
• Driveline unbalance induced vibrations
• Exhaust flow induced vibrations
• Source identification using test-CAE based hybrid approach
• Vibration path propagation study using FE methods
• Vibration control methods including
• Structural stiffness modifications
• Surface damping & tuned absorbers
• Vibration isolation
• Order tracking and forced response analysis for rotary equipments
www.neilsoft.com

2. Vibration control in vehicles and operating machineries
• Bungee cord testing with impact hammer and EM shaker loading
• Measurements via Accelerometer or Laser vibrometer
• Dynamic/modal parameter estimation and correlation including
• Natural frequencies
• Damping factors
• Mode shape vectors
• Mode sensitivity studies & participation factors
• LMS-VL and CADAX systems for testing & correlation
• MSC NASTRAN for structural analysis
Noise control & Acoustic simulations
• Interior cabin acoustic characterization — Automotive, Ship and Airplane cabins
• Structural radiated noise measurement and mitigation
• Product noise testing using ARAI's semi-anechoic and reverberation chamber in accordance with ANSI, ISO and other
standards
• Noise prediction using CAE based simulation methods and correlation to testing, for example:
• Automotive Powertrain Part/Wide open throttle noise & Transmission/Axle Gear noise
• Hydrodynamic & on-board machinery induced structure-borne noise in ships / yachts
• Environmental & industrial noise modeling
• Vehicle pass by noise (noise generation by cars, CVs, rail systems)
• Characterizing and mitigating Noise generated in Industrial plants, by Theme park equipments, within indoor factories etc
• Noise Simulation Tools used: MSC NASTRAN, LMS-VL, MATLAB
www.neilsoft.com

3. Computational Fluid Dynamics
Neilsoft has an experienced engineering team providing Computational Fluid Dynamics (CFD) solutions to various
Automotive, Marine, Oil & Gas, Power Generation and Aerospace customers with the help of robust simulation
methods in conjunction with CFD test correlation. Neilsoft's CFD center of engineering excellence provides services
and solutions in the following areas:
Aerospace Marine
• Aircraft Aerodynamics • Ship/Submarine Hydrodynamics
• Rotor — Airframe Interaction • Propeller Blade Flow
• Helicopter Rotor —Airframe Interaction • Open Water Propeller Cavitation
• Store Separation Analysis • I.C. Engine
• Fuel Tank Sloshing • Sails
• Aerospace Fuel Pump • Tank Sloshing
• Propulsion System • Seakeeping Maneuvering
• Nozzles
• Compressor and Fans
• Turbines
• Missile Aerodynamics
Automotive
• Aerodynamics
• Brake Cooling
• Engine Flow & Combustion
• Fuel System
• Underhood Thermal Management Climate &
Comfort Control
www.neilsoft.com

4. Contact us
Company Headquarters
Pune (India)
Neilsoft Limited
Pride Parmar Galaxy 8th Floor
10/10 + A Sadhu Vaswani chowk
Pune 411001
Tel: +91 20 2605 3003
Fax: +91 20 2613 1755
Chicago, Illinois Los Angeles, California Appleton, Wisconsin
Neilsoft Inc. 10811 Washington Blvd, Neilsoft Inc.
800 West Fifth Ave, Suite 211 Suite 300, Culver City, 980 American Drive
Naperville, IL 60563, USA CA 90232, USA Neenah, WI 54956, USA
Tel: +1 630 357 7430 Tel: +1 310 437 6300 Tel: +1 414 807 3624
Fax: +1 630 596 5304 Fax: +1 419 821 7513 Fax: +1 888 640 7015
UK Germany
Neilsoft Limited Neilsoft GmbH
6-8 AW House, Stuart Street Auf der Krautweide 32
Luton, LU1 2SJ, UK 65812 Bad Soden, Germany
Tel: +44 1582 455 559 Tel: +49 6196 93490-0
Fax: +44 1582 486 699 Fax: +49 6196 93490-49
Bangalore New Delhi Chennai Mumbai
Neilsoft Limited Neilsoft Limited Neilsoft Limited Neilsoft Limited
406, Embassy Centre 1404, Chiranjiv Tower Room No.4, 5th Floor B-206, Kanara Business Centre Off
11, Crescent Road 43, Nehru Place Crown Court, No.34, Ghatkopar - Andheri Link Road
Kumara Park (E) New Delhi 110019 Cathedral Road, Gopalapuram Next to Everest Gardens,
Bangalore 560001 Tel: +91 11 4108 6157 Chennai 600086 Ghatkopar (E) Mumbai 400075
Tel: +91 80 2226 7786 Tel: +91 11 4108 6158 Tel: +91 44 2811 4247 Tel: +91 22 6770 2737
Fax: +91 80 2237 4189 Fax: +9111 4108 6161 Fax: +91 44 2811 4247 Fax: +91 22 6770 2736
http://www.neilsoft.com