Procedure for defining of the equivalent vehicle mileage and the procedure approbation results

Abstract

Introduction (problem statement and relevance). Automotive manufacturers and research engineers around the world are actively engaged in improving the methods of checking the safety and durability of the vehicle, vehicle components and systems. Testing and evaluation methods play an important role in solving this problem. This article reveals the issues of using the methods for determining the equivalent mileage of a vehicle in accordance with accumulation of pseudodamage, which includes well-known methods and procedures, and also describes the results of applying the methods in practice.The purpose of the research is development of the program of accelerated durability testing of the М1С category vehicle based on the application of the methods for determining the equivalent mileage.Methodology and research methods. The method is based on the approaches of the material fatigue curve definition, the rule of linear damage accumulation, the theory of counting the number of loading-unloading hysteresis cycles with the rain flow method approach and subsequent comparative analysis according to values of accumulated pseudo damage.Scientific novelty and results. The main results were obtained in the form of a program of accelerated durability testing of the М1С category vehicle, in addition, the features of using the method for determining the equivalent mileage of a vehicle based on the accumulation of pseudo-damages are disclosed.Practical significance. The obtained result is applicable in the field of studies of the durability of the load-bearing components of the vehicle and its subsystems using the capabilities of the test base and mathematical modeling tools, in addition, the results are of practical importance in the development of accelerated durability testing of competing vehicles, similar in weight and size parameters to the studied.