JoVE - Journal of Visualized Experiments
JoVE Visualize
Contact Us

A High-Precision Inverse Finite Element Method for Shape Sensing and Structural Health Monitoring

  • 0School of Civil Engineering, Tianjin University, Tianjin 300350, China.
Sensors (basel, Switzerland) +

|

October 16, 2024

|

October 16, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

A new high-precision inverse finite element method (iFEM) enhances structural health monitoring for ships. This advanced method accurately reconstructs displacements in curved shell structures, improving safety and reducing costs in harsh marine environments.

Area Of Science

  • Naval Architecture and Marine Engineering
  • Computational Mechanics
  • Structural Health Monitoring

Background

  • Deep-sea resource exploitation increases ship operational demands in challenging marine environments.
  • Structural failures in ships pose significant risks to crew safety and operational costs.
  • Real-time structural health monitoring (SHM) is crucial for ensuring ship integrity.

Purpose Of The Study

  • To develop a high-precision inverse finite element method (iFEM) for accurate displacement reconstruction in curved shell structures.
  • To address limitations of existing iFEM methods, such as element distortion in complex geometries.
  • To improve the reliability of SHM systems for marine applications.

Main Methods

  • Proposed a novel iFEM approach for curved shells without altering element displacement modes or mesh complexity.
  • Implemented a calculation modification based on establishing a local coordinate system at Gaussian integration points.
  • Modified stiffness integration within the iFEM framework.

Main Results

  • The high-precision iFEM effectively reduced displacement reconstruction errors compared to traditional methods.
  • Numerical examples validated the method's capability in handling curved shell structures.
  • The proposed iFEM demonstrated robust performance suitable for practical engineering applications.

Conclusions

  • The developed high-precision iFEM offers a significant advancement for SHM in marine structures.
  • This method enhances the accuracy of displacement reconstruction for complex curved shells.
  • The findings support improved safety and cost-efficiency in ship structural monitoring.

Keywords: