FEM [finite element method]analysis on collapse of UAV [unmanned aerial vehicle] from different heights
2021
Gheorghe, G., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Gageanu, I., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Persu, C., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Cujbescu, D., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Voicu, G., University Politehnica of Bucharest (Romania)
The FEM analysis in SolidWorks Simulation will present the study of drop tests evaluating the effect of the impact of a part or an assembly with a rigid or flexible planar surface. The program calculates impact and gravity loads automatically. No other loads or restraints are allowed. The program solves a dynamic problem as a function of time. The general equation of motion is: FI(t) + FD(t) + FE(t) = R(t), where FI(t) are the inertia forces, FD(t) are the damping forces, and FE(t) are the elastic forces. All of these forces are time-dependent. Increased requirements for reliability and safety, included in contemporary standards and norms, have a high impact over new product development. New numerical techniques based on virtual prototyping technology facilitate improving the product development cycle, resulting in reduced time•mE−1 spent for this stage, as well as increased knowledge about certain failure mechanisms. The so-called “drop test” has become nearly a “must” step in the development of any human operated product. This study aims to demonstrate the dynamic behaviour assessment of a structure under impact loads, based on virtual prototyping using a typical nonlinear analysis – explicit dynamics. Different height and drop orientations were analysed and critical load cases and design weaknesses have been found. Design modifications have been proposed, based on detailed analyses results review.
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