Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： The study of the unsteady flow mechanism between the individuals in a group can provide theo-retical basis for the swarm motion of bionic aircraft. 'The influence of horizontal spacing between flappingwing flockings on aerodynamic performance in forward flight is studied by using computational fluid dy-namics method based on finite element method.It is found that the horizontal spacing significantly affectsthe aerodynamic performance of flapping wings.Under a certain vertical spacing, flapping wings in flockingcan obtain the best thnust performance at a small horizontal spacing,and the best lift performance can beobtained at a large horizontal spacing.The aerodynamic performance of flapping wings is closely related tothe vortex shedding interaction between the front wing and the rear wing in flocking.
Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： Blast loading induced by shallow-buried explosives is the main threat to an armored vehicle andits occupants. Studying and investigating the underlying mechanism and its influential factors is the pre-requisite and basis for improving the survivability of amored vehicles and ensure the safety of occupants.We present a critical overview on the destruction mechanisms of shallow buried explosives and the corre-sponding measurement methodologies and characterization. First , various research methodologies for blastdynamics are introduced , and factors affecting blast load transmission are summarized and discussed.Then , experimental and simulation methodologies concerning shallow-buried explosive blast loading aresummarized. Finally , future research directions concerning protection against shallow-buried explosives arehighlighted.
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