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The deformation results of previous model reduction methods with external forces applied show noticeable differences from full-scale finite element method (FEM) simulation. We found that data-driven approaches, specifically proper orthogonal decomposition, can be a solution to this nonlinear deformation simulation problem in the subspace. Nevertheless, off-line FEM simulation with an infinite number...
With the development of modern military technology, the technical level and application requirements of target tracking turntable are also getting higher and higher, high precision and large scale have become the inevitable trend of its development. In this paper, according to the performance test of the infrared seeker servo mechanism, a large target tracking platform is designed. Firstly, the target...
In this report, the acoustic streaming field in a 2-dimensional rectangular acoustic field with a traveling wave is analyzed by the finite element method. It is found that the acoustic streaming field manifests a diversity in the number, size, distribution and shape of the eddies, with the change of the frequency, size, topology and driving conditions. The diversity of acoustic streaming field, revealed...
This paper presents the design, test and analysis of a thickness non-uniform piezoelectric beam for impact vibration energy harvesting. The piezoelectric beam has three evenly spaced rectangular grooves of identical size, and three identical rectangular piezoelectric patches. Each piezoelectric patch has the same central position as its corresponding groove, and the three piezoelectric patches are...
A vibrating metal strip, driven by piezoelectric ceramics, can rotate a cluster of small particles around a fixed node. Under appropriate driving conditions, the rotation becomes stable and the rotational radius of the cluster of small particles can reach the edge of the structure. This paper is focused on the analyses on the mechanisms of this phenomenon by Finite Element Method. First, the Finite...
3D Terrestrial Laser Scanning (TLS) facilitates survey campaign which is essential step for point cloud data acquisition and further research. IRIS-3D, one typical media of TLS, has been widely applied to comprehensive fields such as commercial survey, engineering, mining and industrial markets. The process of three dimensional surface modeling (3DSM) was elaborated and quantification for different...
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