Interaction of weak shock waves with rectangular meshes in plate

Trudy Odesskogo Politehničeskogo Universiteta

O.A. Mikulich¹  V.I. Shvab’yuk¹ 

[1] Lutsk National Technical University;

关键词: plate;    stressed state;    nonstationary problem;   

DOI  :  10.15276/opu.2.49.2016.15

来源: DOAJ

【 摘 要 】

In mechanical engineering, building and other industries a significant part of the process includes the presence of various dynamic loads due to technological and mechanical impacts. Consideration of such load effects allows more accurate assessment of the structural elements strength or machine parts. Aim: The aim is to develop an algorithm for calculating of dynamic stress state of plates with meshes for pulse loading in the form of a weak shock wave. Materials and Methods: An integral and discrete Fourier transform were used to solve the problem. An application of Fourier transform by time allowed reducing the dynamic problem of flat deformation to the solution of a finite number of problems for the established oscillations at fixed cyclic frequency values. In the area of Fourier-images the method of boundary integral equations and the apparatus of a complex variable function theory are used to study the dynamic stress concentration. Results: Based on the developedmethodology the distribution change of the dynamic circle stress over time on the edge of a rectangular hole is studied. The time sections of stress distribution fields under the influence of pulse dynamic load is constructed.

【 授权许可】

Unknown