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使用位移-应变变换矩阵对多材料结构进行位移、应变和失效估计

Displacement, Strain and Failure Estimation for Multi-Material Structure Using the Displacement-Strain Transformation Matrix.

作者信息

Jang Hye-Lim, Han Dae-Hyun, Hwang Mun-Young, Kang Donghoon, Kang Lae-Hyong

机构信息

Department of Mechatronics Engineering, and LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Korea.

Railroad Safety Research Team, Korea Railroad Research Institute, 176, Railroad Museum St, Uiwang, Gyeonggi-do 16105, Korea.

出版信息

Materials (Basel). 2020 Jan 2;13(1):190. doi: 10.3390/ma13010190.

DOI:10.3390/ma13010190
PMID:31906528
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6982246/
Abstract

In this study, we propose a method to estimate structural deformation and failure by using displacement-strain transformation matrices, i.e., strain-to-displacement transformation (SDT) and displacement-to-strain transformation (DST). The proposed SDT method can be used to estimate the complete structural deformation where it is not possible to apply deformation measurement sensors, and the DST method can be used for to estimate structural failures where strain and stress sensors cannot be applied. We applied the SDT matrix to a 1D beam, a 2D plate, rotating structures and real wind turbine blades, and successfully estimated the deformation in the structures. However, certain difficulties were encountered while estimating the displacement of brittle material such as an alumina beam. The study aims at estimating the displacement and stress to predict the failure of the structure. We also explored applying the method to multi-material structures such as a two-beam bonded structure. In the study, we used alumina-aluminum bonded structures because alumina is bonded to the substrate to protect the structure from heat in many cases. Finally, we present the results of the displacement and failure estimation for the alumina-aluminum structure.

摘要

在本研究中，我们提出了一种利用位移 - 应变变换矩阵来估计结构变形和失效的方法，即应变到位移变换（SDT）和位移到应变变换（DST）。所提出的SDT方法可用于估计无法应用变形测量传感器的完整结构变形，而DST方法可用于估计无法应用应变和应力传感器的结构失效。我们将SDT矩阵应用于一维梁、二维板、旋转结构和实际风力涡轮机叶片，并成功估计了结构中的变形。然而，在估计诸如氧化铝梁等脆性材料的位移时遇到了某些困难。该研究旨在估计位移和应力以预测结构的失效。我们还探索了将该方法应用于多材料结构，如双梁粘结结构。在该研究中，我们使用了氧化铝 - 铝粘结结构，因为在许多情况下氧化铝粘结到基体上以保护结构免受热影响。最后，我们展示了氧化铝 - 铝结构的位移和失效估计结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/5e256e0e7267/materials-13-00190-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/4e2bc25b31ff/materials-13-00190-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/cee037415494/materials-13-00190-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/0095405d9b76/materials-13-00190-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/fac895365ebb/materials-13-00190-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/dc747e002da8/materials-13-00190-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/5e256e0e7267/materials-13-00190-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/0a03f8a0f5a3/materials-13-00190-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/6c12370f195e/materials-13-00190-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/fefc7e6ce1e4/materials-13-00190-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/8f8c5b6a6926/materials-13-00190-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/e2b4b2dc9fd9/materials-13-00190-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/520fdf5a71cf/materials-13-00190-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/f10dc6493137/materials-13-00190-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/4e2bc25b31ff/materials-13-00190-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/cee037415494/materials-13-00190-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/0095405d9b76/materials-13-00190-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/fac895365ebb/materials-13-00190-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/dd8cd89053a5/materials-13-00190-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c099/6982246/5e256e0e7267/materials-13-00190-g014.jpg

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