Stress wave method in dynamic resistance analysis of an explosion-proof valve

The paper presents the concept of a novel stress wave method (SWM) for determiningthe dynamic reaction of structural elements of an explosion-proof valve. The stress wave methodis an original solution to the issue of the dynamic reaction of structural elements and systems. Itis particularly recommended in the case of intensive percussive or explosive impacts. The methodwas developed by the author of works [14, 15]. It reflects the wave nature of stress development. Thepaper presents the origin, assumptions and the basic dependencies of the method. The characteristicsof the method are illustrated by means of solutions to issues closely related to the requirements fortesting the resistance of shelter explosion-proof valves. The description also includesa comparison of the calculation results with the results obtained by the finite element method (FEM)and the results of experimental tests. The possibility of significant differences between the comparedsolutions has been shown. It should be noted that geometric attenuation, reflections and interferenceof waves are natural for the dynamic reaction of an element and therefore for wave processes. Thesephenomena can significantly affect the distribution of the parameters of the sought dynamic reactionin space and time. The proposed method of analysis is distinguished by high accuracy of calculations.Keywords: stress waves, structural element vibrations, discrete models, differential solution, explosion-proof valve