ABSTRACT
Analysis of test results concern variable torsional stiffness which is realized in a middle part of a new type of active stabilizer. In mentioned area a classic rod was replaced by two or four profiles with rectangular cross-section which are constantly connected with not-changed parts of stabilizer (with its arms). Specially designed mechanism is responsible for changing stiffness and it performs it so that the profiles are expanded for the same distance in opposite direction. An article contains brief description of elaborated design of new type of a stabilizer, an expanding mechanism and a test bench. It includes comprehensive analysis of results obtained during tests. Additionally it describes preliminary analytical analysis which include occurring phenomena of pure torsion and warping under torsion. Warping phenomena results from the method of fixing tested profiles.
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