Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory
As a weak link, the joint surface of machine tools directly affects the stiffness and machining accuracy of the entire machine tool. However, obtaining the distribution of contact stress is a key problem that urgently needs to be solved in exploring the mechanical properties of joint surface connect...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417724003997 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841545999385886720 |
|---|---|
| author | Nana Niu Yongsheng Zhao Zhifeng Liu Ying Li Lele Liu |
| author_facet | Nana Niu Yongsheng Zhao Zhifeng Liu Ying Li Lele Liu |
| author_sort | Nana Niu |
| collection | DOAJ |
| description | As a weak link, the joint surface of machine tools directly affects the stiffness and machining accuracy of the entire machine tool. However, obtaining the distribution of contact stress is a key problem that urgently needs to be solved in exploring the mechanical properties of joint surface connections. In this paper, a tangential contact stress ultrasonic testing method based on the equivalent medium theory is proposed, providing data support for accurately characterizing the contact state of the joint surface. A virtual material model of rough contact interface based on fractal theory is established to explore the coupling relationship between the propagation speed of ultrasonic critical refracted longitudinal waves, the tested object’s material parameters, and stress. Moreover, the expression of the equivalent material parameters of the ultrasonic critical refracted longitudinal wave propagation layer with stress variation is derived. An ultrasonic acoustic time difference model considering changes in contact surface material parameters is constructed based on the principle of acoustic elasticity of ultrasound. Furthermore, a critical refractive detection model for longitudinal wave’s tangential contact stress is established based on equivalent medium theory. Experimental specimens and stress detection plans are designed, and the tangential contact stress of the specimens is measured based on the division of surface grids. The equivalent stress value of each node is calculated based on the von Mises stress by measuring the stress in the X/Y direction. In addition, a shear stress distribution cloud map of the contact surface is drawn. Finally, the accuracy of the detection results is confirmed by combining theory, simulation, and experimental methods. The proposed tangential contact stress detection method based on critical refractive longitudinal waves is significant for low-stress assemblies. |
| format | Article |
| id | doaj-art-a09edd1e7445419198cf10fb65cadf2b |
| institution | Kabale University |
| issn | 1350-4177 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj-art-a09edd1e7445419198cf10fb65cadf2b2025-01-11T06:38:39ZengElsevierUltrasonics Sonochemistry1350-41772025-01-01112107150Research on ultrasonic testing method for tangential contact stress based on equivalent medium theoryNana Niu0Yongsheng Zhao1Zhifeng Liu2Ying Li3Lele Liu4Machinery Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing Technology, Beijing University of Technology, Beijing 100124, China; Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, ChinaMachinery Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing Technology, Beijing University of Technology, Beijing 100124, China; Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, China; Corresponding authors.Machinery Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing Technology, Beijing University of Technology, Beijing 100124, China; Key Laboratory of CNC Equipment Reliability Ministry of Education, Jilin University, Changchun 130012, China; Corresponding authors.Machinery Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing Technology, Beijing University of Technology, Beijing 100124, China; Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, ChinaMachinery Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing Technology, Beijing University of Technology, Beijing 100124, China; Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, ChinaAs a weak link, the joint surface of machine tools directly affects the stiffness and machining accuracy of the entire machine tool. However, obtaining the distribution of contact stress is a key problem that urgently needs to be solved in exploring the mechanical properties of joint surface connections. In this paper, a tangential contact stress ultrasonic testing method based on the equivalent medium theory is proposed, providing data support for accurately characterizing the contact state of the joint surface. A virtual material model of rough contact interface based on fractal theory is established to explore the coupling relationship between the propagation speed of ultrasonic critical refracted longitudinal waves, the tested object’s material parameters, and stress. Moreover, the expression of the equivalent material parameters of the ultrasonic critical refracted longitudinal wave propagation layer with stress variation is derived. An ultrasonic acoustic time difference model considering changes in contact surface material parameters is constructed based on the principle of acoustic elasticity of ultrasound. Furthermore, a critical refractive detection model for longitudinal wave’s tangential contact stress is established based on equivalent medium theory. Experimental specimens and stress detection plans are designed, and the tangential contact stress of the specimens is measured based on the division of surface grids. The equivalent stress value of each node is calculated based on the von Mises stress by measuring the stress in the X/Y direction. In addition, a shear stress distribution cloud map of the contact surface is drawn. Finally, the accuracy of the detection results is confirmed by combining theory, simulation, and experimental methods. The proposed tangential contact stress detection method based on critical refractive longitudinal waves is significant for low-stress assemblies.http://www.sciencedirect.com/science/article/pii/S1350417724003997Contact characteristicsContact stressUltrasonic testingCritical refracted longitudinal waves |
| spellingShingle | Nana Niu Yongsheng Zhao Zhifeng Liu Ying Li Lele Liu Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory Ultrasonics Sonochemistry Contact characteristics Contact stress Ultrasonic testing Critical refracted longitudinal waves |
| title | Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| title_full | Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| title_fullStr | Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| title_full_unstemmed | Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| title_short | Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| title_sort | research on ultrasonic testing method for tangential contact stress based on equivalent medium theory |
| topic | Contact characteristics Contact stress Ultrasonic testing Critical refracted longitudinal waves |
| url | http://www.sciencedirect.com/science/article/pii/S1350417724003997 |
| work_keys_str_mv | AT nananiu researchonultrasonictestingmethodfortangentialcontactstressbasedonequivalentmediumtheory AT yongshengzhao researchonultrasonictestingmethodfortangentialcontactstressbasedonequivalentmediumtheory AT zhifengliu researchonultrasonictestingmethodfortangentialcontactstressbasedonequivalentmediumtheory AT yingli researchonultrasonictestingmethodfortangentialcontactstressbasedonequivalentmediumtheory AT leleliu researchonultrasonictestingmethodfortangentialcontactstressbasedonequivalentmediumtheory |