Uncertainty factors of a finite element model using the fuzzy analysis method
The recent advancement in manufacturing technology in the automotive and aerospace sectors has led to the invention of advanced structured material, which is lightweight and a complex geometry model that can be manufactured. As it is related to human safety and hazards, the need for uncertainty...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2024
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| Online Access: | http://journalarticle.ukm.my/25130/ http://journalarticle.ukm.my/25130/1/12.pdf |
| Summary: | The recent advancement in manufacturing technology in the automotive and aerospace sectors has led to the
invention of advanced structured material, which is lightweight and a complex geometry model that can be
manufactured. As it is related to human safety and hazards, the need for uncertainty analysis in a structure before and
after a manufacturing process is a primary concern. Thus, this paper analyzes the uncertainty parameters of a meshed
finite element model in the geometry, boundary condition, load, and material properties. An uncertainty analysis
numerical tool, the fuzzy analysis method, is applied in Excel-VBA as the simulation platform. Each uncertainty
parameter is in a range of numbers, with a maximum and minimum value as the limit. The α-cuts determine the fuzzy
analysis output on the membership function. The deterministic value of the variable is implemented for comparison
purposes. The simulation result for the von-Mises stress analysis has significantly impacted the uncertainty analysis
as its curve has surpassed the yield strength limit of the material. The simulation output for the displacement has a
more considerable uncertainty dispersion when compared to the other results. This study helps to find a better
security margin of a structure for its sustainability in the future. |
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