The paper discusses the basic assumptions of programmed tests of structural elements, the aim of which is to evaluate the operational fatigue life of structural elements, including those of mechanical single-track vehicles. The scope of the work includes a description of modeling issues: the test object, operational loads, and requirements regarding test stands and research instrumentation. The whole is illustrated with an example of programmed tests of a structural element (frame node) of a single-track vehicle.
ASSUMPTIONS OF PROGRAMMED FATIGUE TESTS OF CONSTRUCTIONAL ELEMENTS
The paper presents the basic assumptions of programmed tests of constructional elements. Their goal is to evaluate operating fatigue life of contructional elements including mechanical one-track vehicles. The scope of the paper includes the description of modeling issues: test object, operating loading and requirements regarding test stands and test equipment. There is presented an example of programmed tests of an constructional elements (frame node) of a one-track vehicle.
List of major symbols:
S – general designation of stress in MPa
Smax – maximum stress: in a sinusoidal cycle, in the analyzed section of random stresses (e.g., measurement section of operational loads), or in the spectrum and load program in MPa
Smin – minimum stress: in a sinusoidal cycle, in the analyzed section of random stresses (e.g., measurement section of operational loads), or in the spectrum and load program in MPa
Sm – mean stress value: in a sinusoidal cycle, in the analyzed section of random stresses (e.g., (…)
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