The Elastic Deformation of Soil Around Models of Rigid Slab and Raft

ABSTRACT The idea of intelligent tires is to develop a tire into an active perception component or a force sensor with an embedded microsensor, such as an accelerometer. A tire rolling kinematics model is necessary to link the acceleration measured with the tire body elastic deformation, based on which the tire forces can be identified. Although intelligent tires have attracted wide interest in recent years, a theoretical model for the rolling kinematics of acceleration fields is still lacking. Therefore, this paper focuses on an explicit formulation for the tire rolling kinematics of acceleration, thereby providing a foundation for the force identification algorithms for an accelerometer-based intelligent tire. The Lagrange–Euler method is used to describe the acceleration field and contact deformation of rolling contact structures. Then, the three-axis acceleration vectors can be expressed by coupling rigid body motion and elastic deformation. To obtain an analytical expression of the full tire deformation, a three-dimensional tire ring model is solved with the tire–road deformation as boundary conditions. After parameterizing the ring model for a radial tire, the developed method is applied and validated by comparing the calculated three-axis accelerations with those measured by the accelerometer. Based on the features of acceleration, especially the distinct peak values corresponding to the tire leading and trailing edges, an intelligent tire identification algorithm is established to predict the tire–road contact length and tire vertical load. A simulation and experiments are conducted to verify the accuracy of the estimation algorithm, the results of which demonstrate good agreement. The proposed model provides a solid theoretical foundation for an acceleration-based intelligent tire.

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The study of the elastic deformation of a flexible wheel by a cam wave generator

Studia Universitatis Babeș-Bolyai Engineering ◽

10.24193/subbeng.2020.1.6 ◽

2020 ◽

Vol 65 (1) ◽

pp. 51-58

Author(s):

Sava Ianici

Keyword(s):

Numerical Simulation ◽

Finite Element Method ◽

Finite Element ◽

Elastic Deformation ◽

Theoretical Study ◽

Elastic Field ◽

The Finite Element Method ◽

Elastic Deformations ◽

Wave Generator ◽

Two Stages

The paper presents the results of research on the study of the elastic deformation of a flexible wheel from a double harmonic transmission, under the action of a cam wave generator. Knowing exactly how the flexible wheel is deformed is important in correctly establishing the geometric parameters of the wheels teeth, allowing a better understanding and appreciation of the specific conditions of harmonic gearings in the two stages of the transmission. The veracity of the results of this theoretical study on the calculation of elastic deformations and displacements of points located on the average fiber of the flexible wheel was subsequently verified and confirmed by numerical simulation of the flexible wheel, in the elastic field, using the finite element method from SolidWorks Simulation.

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Shock loading of fixed flexible thread and orthotropic elastic membrane

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2003.1.003 ◽

2003 ◽

Vol 3 ◽

pp. 52-59

Author(s):

S.S. Komarov ◽

N.Yu. Tsvileneva ◽

N.I. Miskaktin

Keyword(s):

Numerical Methods ◽

Dynamic Loading ◽

Elastic Deformation ◽

Numerical Algorithm ◽

Shock Loading ◽

Elastic Membrane ◽

Wave Dynamics ◽

Elastic Membranes ◽

Pneumatic Structures

The main problems of the wave dynamics of flexible filaments and elastic membranes are solved. The reliability of the numerical algorithm proposed by the authors for calculating the elastic deformation of pneumatic structures under dynamic loading is confirmed when compared with the results of known studies obtained by analytical and numerical methods.

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Correction: Exploring the antifouling effect of elastic deformation by DEM–CFD coupling simulation

RSC Advances ◽

10.1039/d0ra90112a ◽

2020 ◽

Vol 10 (67) ◽

pp. 41249-41249

Author(s):

Limei Tian ◽

E. Jin ◽

Jianfu Wang ◽

Xiaoming Wang ◽

Wei Bing ◽

...

Keyword(s):

Elastic Deformation

Correction for ‘Exploring the antifouling effect of elastic deformation by DEM–CFD coupling simulation’ by Limei Tian et al., RSC Adv., 2019, 9, 40855–40862, DOI: 10.1039/C9RA06761B.

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Improvement of evaluation of the contact pressure upon the penetration of a reactor lower head during a severe accident: Part 1. Conceptualization considering elastic deformation

Annals of Nuclear Energy ◽

10.1016/j.anucene.2021.108588 ◽

2021 ◽

Vol 164 ◽

pp. 108588

Author(s):

Kukhee Lim ◽

Yong Jin Cho ◽

Yoonhee Lee

Keyword(s):

Contact Pressure ◽

Elastic Deformation ◽

Severe Accident ◽

Lower Head

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Elastic deformation of the mandibular jaw revisited—a clinical comparison between digital and conventional impressions using a reference

Clinical Oral Investigations ◽

10.1007/s00784-021-03777-z ◽

2021 ◽

Author(s):

Alexander Schmidt ◽

Leona Klussmann ◽

Maximiliane A. Schlenz ◽

Bernd Wöstmann

Keyword(s):

Statistical Analysis ◽

Elastic Deformation ◽

Clinical Relevance ◽

Mouth Opening ◽

Reference Structure ◽

Intraoral Scanner ◽

Digital Impressions ◽

Normal Vectors ◽

Mandibular Deformation ◽

Conventional Impression

Abstract Objectives Due to the partly strongly differing results in the literature, the aim of the present study was to investigate a possible deformation of the mandible during mouth opening using an intraoral scanner (IOS) and a conventional impression for comparison with a reference aid. Materials and methods Four steel spheres were reversibly luted in the mandibular (n = 50) with a metallic reference aid at maximum mouth opening (MMO). Two digital impressions (Trios3), at MMO and at slightly mouth opening SMO and a conventional impression (Impregum), were taken as the measuring accuracy of the reference structure was already known. Difference between MMO-SMO for digital impressions and deviations between digital and conventional (SMO) were calculated. Furthermore, the angle between the normal vectors of two constructed planes was measured. Statistical analysis was performed with SPSS25. Results Deviations for linear distances ranged from −1 ± 3 μm up to 17 ± 78 μm (digital impressions, MMO-SMO), from 19 ± 16 μm up to 132 ± 90 μm (digital impressions, SMO), and from 28 ± 17 μm up to 60 ± 52 μm (conventional impressions, SMO). There were no significant differences for digital impressions (MMO-SMO), and there were significant differences between the conventional and digital impressions at SMO. Conclusions Based on the results of the present study, no mandibular deformation could be detected during mouth opening with regard to the digital impressions. The results were rather within the measuring tolerance of the intraoral scanner. Clinical relevance Based on the present study, no deformation of the mandibular during mouth opening could be observed at the level previously assumed. Therewith related, dental techniques related to a possible mandibular deformation therefore should be reconsidered.

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