A Refined Shape Sensing Method for Skin Antenna Structure Based on Inverse Finite Element Method

Niu, Shengtao; Li, Kexiang; Liu, Jianfeng; Bao, Hong

doi:10.3390/app10217620

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…Since the deformation of the gantry structure in heavy-duty machine tools is an important factor that affects machining accuracy, Liu et al [29,30] verified the accuracy of the iFEM algorithm with fiber Bragg grating sensors in the mechanical manufacturing field. Niu et al [31] presented a multi-nodes iFEM that reconstructs the displacement of a flexible antenna panel consistent with Mindlin plate theory.…”

Section: Introductionmentioning

confidence: 99%

A new approach for displacement and stress monitoring of tunnel based on iFEM methodology

Savino¹,

Tondolo²

2021

Smart Mater. Struct.

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Structural monitoring plays a key role for underground structures such as tunnels. Strain readings are expected to report structural conditions during construction and at the final delivery of the works. Furthermore, it is increasingly requested an extension to long-term monitoring from contractors with possible use of the same system in service during construction. A robust and efficient monitoring methodology from discrete strain measurements is the inverse finite element method (iFEM), which allows to reconstruct the structural response without input data on the load pattern applied to the structure as well as material and inertial properties of the elements and therefore it is interesting for structural configurations affected by uncertain loading conditions, such as the tunnel. The formulation presented in this paper, based on the iFEM theory, is improved from the previous work available in literature for both the shape functions used and the computational procedure. Indeed, the approach allows to overcome inconsistencies related to structural loading conditions and a pseudo-inverse matrix preserve all the rigid body modes without imposing specific constraints which is typical for tunnels. Numerical validation of the iFEM procedure is performed by simulating the input data coming from a tunnel working in a heterogeneous soil under different loading conditions with direct FEM analysis.

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Section: Introductionmentioning

confidence: 99%

A new approach for displacement and stress monitoring of tunnel based on iFEM methodology

Savino¹,

Tondolo²

2021

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Niu et al [14] explore a novel multi-node inverse Finite Element Method (iFEM) for sensing the shape of flexible structures using strain sensors. In accordance with the Mindlin plate theory, a weighted-least-squares function is minimized by considering all strain measures.…”

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confidence: 99%