Please log in

Paper / Information search system




Please log in

  • Summary & Details

Driveline Torsional Vibration Analysis and Clutch Damper Characteristics Optimization for reducing Commercial Vehicle Noise and Vibrations

Detailed Information

Author(E)1) Amol Jagtap, 2) Damodar Chollangi, 3) Sandeep Mamoriya
Affiliation(E)1) Tata Motors Ltd., 2) Tata Motors Ltd., 3) Tata Motors Ltd.
Abstract(E)The automotive world has seen an increase in customer demands for vehicles having low noise and vibrations. One of the most important source of noise and vibrations associated with vehicles is the vibration of driveline systems. For commercial vehicles, the refinement of drivelines from NVH point of view is complex due to the cost and efficiency constraints. The typical rear wheel drive configuration of commercial vehicles mostly amplifies the torsional vibrations produced by engine which results into higher noise in the vehicle operating speed range.
Theoretically, there are various options available for fine tuning the torsional vibration performance of the vehicle drive train. The mass moments of inertia and stiffness of the drivetrain components play significant role in torsional vibration damping, however, except minor changes to flywheel mass, it is hardly possible to change other components, subject to design limitations. Considering this, clutch disc torque twist characteristics plays an important role in mitigating the NVH concerns. The drive train represents a vibration system with several resonance frequencies which can be calculated using various simulation tools. With the help of simulation tools like 1D or multi body dynamics, optimized solution for the driveline fine tuning can be obtained which can reduce vehicle level noise.
In this paper, 1D simulation model is used for the prediction of torsional vibration performance of the vehicle. Theoretical model of drivetrain component engine, clutch, gearbox etc. were built considering mass, inertia and stiffness values. Clutch damper parameters are optimized based on the simulation results and effect is validated by vehicle level noise and torsional vibration measurements.

About search


How to use the search box

You can enter up to 5 search conditions. The number of search boxes can be increased or decreased with the "+" and "-" buttons on the right.
If you enter multiple words separated by spaces in one search box, the data that "contains all" of the entered words will be searched (AND search).
Example) X (space) Y → "X and Y (including)"

How to use "AND" and "OR" pull-down

If "AND" is specified, the "contains both" data of the phrase entered in the previous and next search boxes will be searched. If you specify "OR", the data that "contains" any of the words entered in the search boxes before and after is searched.
Example) X AND Y → "X and Y (including)"  X OR Z → "X or Z (including)"
If AND and OR searches are mixed, OR search has priority.
Example) X AND Y OR Z → X AND (Y OR Z)
If AND search and multiple OR search are mixed, OR search has priority.
Example) W AND X OR Y OR Z → W AND (X OR Y OR Z)

How to use the search filters

Use the "search filters" when you want to narrow down the search results, such as when there are too many search results. If you check each item, the search results will be narrowed down to only the data that includes that item.
The number in "()" after each item is the number of data that includes that item.

Search tips

When searching by author name, enter the first and last name separated by a space, such as "Taro Jidosha".