Techniques for Accelerated Design Validation of Tractor Chassis 2001-26-0050
With increasing competition and number of global players entering the Indian market, the Indian tractor scenario is as hot and fluid as that of the passenger car. Tractor manufacturers are under tremendous market pressure to become internationally competitive and bring out new tractor models in the shortest time possible as well as keeping the validation costs to a minimum. This is making them to look for advanced techniques for reducing the development time such as service load data acquisition and analysis, life prediction and accelerated simulation tests for design validation.
This paper presents such an effort by an Indian tractor manufacturer along with ARAL Design validation of the chassis was carried out as a complete structure instead of carrying out on individual components. The methodology adopted was:
to acquire the service load data in various operating conditions by instrumenting the indentified critical components and aggregates
to analyse the strain levels at critical components and aggregates
to generate suitable accelerated load spectrums/blocks for simulation testing
to develop the test facility and carry out the tractor chassis fatigue test using spectrum of simulated load blocks
This paper also discusses in depth the difficulties and problems of service load data acquisition, analysis and simulation of the same on tractors.