А.М. Krupenin - Post-graduate Student, Department of Resistance of Materials, Moscow Aviation Institute (National Research University) E-mail: zeus-russ@yandex.ru М.I. Martirosov - Ph.D. (Eng.), Associate Professor, Department of Resistance of Materials, Moscow Aviation Institute (National Research University) L.N. Rabinsky - Dr.Sc. (Phys.-Math.), Professor, Dean of the Faculty of Applied Mechanics, Moscow Aviation Institute (National Research University)

Object: the object of the research is dynamic characteristics of the rectangular plate. Topic: the research of impact interaction of a rectangular plate with homogeneous isotropic material with vertical drop of liquid. Aim: to verify the numerical model of interaction of a rectangular plate with the surface of the water. To investigate the influence of different factors on the dynamic characteristics of a rectangular plate with a vertical drop of liquid. Research method: dynamic characteristics of a rectangular symmetric plate investigated numerically in the software complex ANSYS AUTODYN, thus permitting the equations are equations of conservation of energy, momentum and mass. In general materials have a complex response to dynamic loading. In ANSYS AUTODYN model of the material is divided into three parts: the equation of state, that expresses the change in the volume, model of strength which expresses the change in the shape and describes the stress deviator tensor, and the failure model. The solution is explicit solver. The task is placed in the platesymmetric formulation of coherent, i.e. equations for plates and liquid are solved simultaneously. The influence on the dynamic characteristics of the plate of the air gap and the initial velocity of interaction are investigated. The obtained results are processed in software complex Mathсad 14. Results: as a result of the work are obtained dynamic characteristics of rectangular plate with homogeneous isotropic material when it vertical hit the water with different initial velocity of interaction, taking into account the gravitational forces, the air gap and without. Conclusions: The adequate simulation of drop of cargo at the water in the software complex ANSYS AUTODYN is possible. From the numerical experiment without the air gap shows that the dependence of hydrostatic pressure on the initial speed linear. The effect of air gap causes oscillation plate and the surface of the water, which leads to uneven their interaction and significantly affects the value of the maximal pressure, however, with the increasing speed of interaction effect of air gap is reduced.

 

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