用于估算固体材料弹性特性的固有频率信息有限元模态分析方法

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-09-13 DOI:10.1063/5.0231087
Sanjay Mahat, Roshan Sharma, Hyunjo Jeong, Jingfei Liu
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引用次数: 0

摘要

本研究提出了一种简单而有效的动态方法,可以无损评估均质各向同性固体材料的弹性特性。与共振超声频谱法和脉冲激励技术等一些动态方法一样,所提出的方法包括两个步骤:实验获取试样的固有频率和数值计算弹性特性。与现有方法相比,拟议方法对实验操作的四个方面:试样制备、试样定位、振动激励和振动检测的要求都低得多。本文提出了一种基于有限元模态分析的反演方法来计算试样的弹性特性,该方法可以提供高精度和高准确度的最佳估计值。利用成熟的基于声速的动态方法,即超声脉冲回波测试,对所提出方法的性能进行了评估。以方形铝试样为例,这两种方法测量的杨氏模量和泊松比分别相差 2.25% 和 -2.07%;测量的剪切模量和体积模量分别相差 0.01% 和 -1.46%。总之,所提出的方法为测定固体材料的弹性特性提供了一种成本更低、实验更简单的方法,同时与通常需要复杂、昂贵设备的既定方法相比,保持了相似的准确性和可靠性。
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Natural frequency informed finite element modal analysis method for estimating elastic properties of solid materials
This study proposes a simple yet effective dynamic method that can nondestructively evaluate the elastic properties of homogeneous isotropic solid materials. Like some dynamic methods, such as resonance ultrasound spectrometry and impulse excitation technique, the proposed method consists of two steps: experimentally acquiring the specimen's natural frequencies and numerically calculating the elastic properties. Compared with the existing methods, the proposed method has much lower requirements on all four aspects of experimental operations: specimen preparation, specimen positioning, vibration excitation, and vibration detection. An inverse method based on finite element modal analysis is proposed to calculate the specimen's elastic properties, and it can deliver optimal estimations with high precision and accuracy. The performance of the proposed method was assessed using the well-established sound speed-based dynamic method, i.e., ultrasound pulse-echo testing. Taking a square aluminum specimen as an example, the differences in the measurements of Young's modulus and Poisson's ratio between these two methods are 2.25% and −2.07%, respectively; the differences in the measurements of shear modulus and bulk modulus are 0.01% and −1.46%, respectively. In summary, the proposed method provides a cheaper and experimentally simpler approach to determining the elastic properties of solid materials while maintaining accuracy and reliability similar to the established methods, which typically require sophisticated, costly equipment.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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