Abstract
Torsional stiffness is important parameter of chassis that affect the handling performance of chassis. Torsional stiffness can be determined using Finite Element Method (FEM) in early stage design of its. In order to validate the FEM result, experimental work needs to be done. The fixture has been design in simpler stucture, flexible for any kind of chassis and using a simple measurement’s equipment such as dial indicator and load cell. Twist fixture has been designed for measuring of torsional stiffness of TATA cab chassis indirectly. The fixture measured the deflection caused by torsion subjected to the chassis. The torsional stiffness was calculated based on measured displacement of chassis. The result of comparison shows that the experimental results in agreement with the simulation results. Therefore, the simulation results of TATA cab chassis model are valid.
Highlights
Increased torsional stiffness of a truck chassis improves vehicle handling by going away the suspension components to control a larger percentage of a vehicle’s kinematics
Pick up chassis used in vehicles has almost the same appearance since the models were built up more than 30 years ago
Many researches have been carried out to analyze the torsional stiffness of chassis designs using finite element analysis (FEA) [1, 2, 3, 4, 5]
Summary
Increased torsional stiffness of a truck chassis improves vehicle handling by going away the suspension components to control a larger percentage of a vehicle’s kinematics. A truck chassis must have adequate torsional stiffness so that chassis structural dynamic modes do not adversely couple with the suspension dynamic modes. The torsional stiffness of a vehicle’s chassis significantly affects its handling characteristics and is an important parameter to evaluate. Many researches have been carried out to analyze the torsional stiffness of chassis designs using finite element analysis (FEA) [1, 2, 3, 4, 5]. In order to validate these finite element models, an experimental method is needed to directly measure torsional stiffness. The purpose of this work is to design and fabricate a twist fixture for measuring the torsional stiffness of TATA Cab chassis
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