Applications in engineering science最新文献_第10页

Constitutive modeling of the mechanical response of arterial tissues 动脉组织力学响应的本构建模

Applications in engineering science Pub Date : 2022-09-01 DOI: 10.1016/j.apples.2022.100111

Manoj Myneni , K.R. Rajagopal

{"title":"Constitutive modeling of the mechanical response of arterial tissues","authors":"Manoj Myneni , K.R. Rajagopal","doi":"10.1016/j.apples.2022.100111","DOIUrl":"10.1016/j.apples.2022.100111","url":null,"abstract":"<div><p>Despite the tremendous impact that a good constitutive relation for the response of arterial tissues can have with regard to advances in cardiovascular science and medicine, and notwithstanding the intense effort to put a felicitous constitutive relation into place, no reliable constitutive relation is available in the literature. In this review article, we provide a brief survey and assessment of the evolution of constitutive relations that have been developed to describe the response of arterial tissues, their inadequacies, and the various quintessential aspects of the response that need to be taken into consideration. We then fashion a nonlinear constitutive relation to describe an inhomogeneous anisotropic compressible viscoelastic solid, which while being grossly inadequate to describe the tissue in its entirety, makes it evident that what one ought to strive for is not in capturing the complexity of tissues, but rather the development of a simple global measure that can be a reliable predictor of the onset of tissue disease, and tissue damage and failure.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"11 ","pages":"Article 100111"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000279/pdfft?md5=7bdfcfd52c0b5941cb650aaf58f9b855&pid=1-s2.0-S2666496822000279-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48860214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Full and partial compression fatigue tests on welded specimens of steel St 52-3. Effects of the stress ratio on the probabilistic fatigue life estimation 钢St 52-3焊接试样的完全和部分压缩疲劳试验。应力比对概率疲劳寿命估计的影响

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100091

Paul Dario Toasa Caiza , Stéphane Sire , Thomas Ummenhofer , Yoshihiko Uematsu

{"title":"Full and partial compression fatigue tests on welded specimens of steel St 52-3. Effects of the stress ratio on the probabilistic fatigue life estimation","authors":"Paul Dario Toasa Caiza , Stéphane Sire , Thomas Ummenhofer , Yoshihiko Uematsu","doi":"10.1016/j.apples.2022.100091","DOIUrl":"10.1016/j.apples.2022.100091","url":null,"abstract":"<div><p>The fatigue strength of structures subjected to cyclic loading depends strongly on the stress ratio. Particularly, in case of welded steel structures this fact is not considered in the corresponding standards nor in the guidelines. Experimentally, two approaches are used to study the effect of stress ratio on the fatigue life. On the one hand, based on the <span><math><mi>S</mi></math></span>-<span><math><mi>N</mi></math></span> curves obtained from tests performed at different stress ratios, the fatigue life under a particular stress range is estimated. On the other hand, the stress amplitude corresponding to a constant fatigue life is estimated by applying the failure criteria for fluctuating stress like the Goodman–Haigh relationship. This paper presents a general probabilistic model, which estimates the <span><math><mi>S</mi></math></span>-<span><math><mi>N</mi></math></span> and Goodman–Haigh curves for any stress ratio. Afterwards, this model is applied on data obtained from full and partial cyclic compression loading tests performed on welded specimens made of steel St 52-3. The tested details correspond to the permissible notch condition limit occurred in highly stressed structures used to build ships.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100091"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000097/pdfft?md5=06b9e43ce94f2869a1d5c1ed975736ee&pid=1-s2.0-S2666496822000097-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47628645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Prediction of surface finish in extrusion honing process by regression analysis and artificial neural networks 用回归分析和人工神经网络预测挤压珩磨过程的表面光洁度

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100105

Jayasimha SLN , Lingaraju K．N , Raju H．P

{"title":"Prediction of surface finish in extrusion honing process by regression analysis and artificial neural networks","authors":"Jayasimha SLN , Lingaraju K．N , Raju H．P","doi":"10.1016/j.apples.2022.100105","DOIUrl":"10.1016/j.apples.2022.100105","url":null,"abstract":"<div><p>The current work explores the influence of process parameters such as mesh size and volume fraction of abrasives with number of passes, on the interior surface quality of a pre machined component by extrusion honing process. The finishing process is highly flexible and unconventional while modifying the surfaces in case of miniature components involving complex profiles. The method is extensively used to deburr, polish, edge contour and removing recast layers by producing compressive stresses. By, the pressurized flow of semi viscous abrasive laden across the surface to be processed. The experimental study has been carried out on Inconel-625 alloy by one way EH process, with the carrier medium silicone polymer blended with SiC as abrasives. Experiments are planned by constructing L27 orthogonal array for the factors such as mesh number 36, 46, 54 and volume fraction 40, 50, 60 % of abrasives followed by number of passes 5, 10 and 15. Also, the study focuses in developing a regression model, training neural network and comparison of experimental R<sub>a</sub> with both regression and ANN model. The prediction of R<sub>a</sub> is accomplished by developing a linear regression model and a feed forward back propagation neural network model. Both the developed models are able to predict the output response with an error of 5 to 12%.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100105"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266649682200022X/pdfft?md5=777bbc5d67d9d687c75e0dbfb1b98cd4&pid=1-s2.0-S266649682200022X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Intrinsic modulus and strain coefficients in dilute composites with a Neo-Hookean elastic matrix 具有Neo-Hookean弹性矩阵的稀复合材料的固有模量和应变系数

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100100

Dmytro Ivaneyko , Jan Domurath , Gert Heinrich , Marina Saphiannikova

{"title":"Intrinsic modulus and strain coefficients in dilute composites with a Neo-Hookean elastic matrix","authors":"Dmytro Ivaneyko , Jan Domurath , Gert Heinrich , Marina Saphiannikova","doi":"10.1016/j.apples.2022.100100","DOIUrl":"10.1016/j.apples.2022.100100","url":null,"abstract":"<div><p>A finite element modelling of dilute elastomer composites based on a Neo-Hookean elastic matrix and rigid spherical particles embedded within the matrix was performed. In particular, the deformation field in vicinity of a sphere was simulated and numerical homogenization has been used to obtain the effective modulus of the composite <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mtext>eff</mtext></mrow></msub></math></span> for different applied extension and compression ratios. At small deformations the well-known Smallwood result for the composite is reproduced: <span><math><mrow><msub><mrow><mi>μ</mi></mrow><mrow><mtext>eff</mtext></mrow></msub><mo>=</mo><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mrow><mo>[</mo><mi>μ</mi><mo>]</mo></mrow><mi>φ</mi><mo>)</mo></mrow><msub><mrow><mi>μ</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span> with the intrinsic modulus <span><math><mrow><mrow><mo>[</mo><mi>μ</mi><mo>]</mo></mrow><mo>=</mo><mn>2</mn><mo>.</mo><mn>500</mn></mrow></math></span>. Here <span><math><mi>φ</mi></math></span> is the volume fraction of particles and <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> is the modulus of the matrix solid. However at larger deformations higher values of the intrinsic modulus <span><math><mrow><mo>[</mo><mi>μ</mi><mo>]</mo></mrow></math></span> are obtained, which increase quadratically with the applied true strain. The homogenization procedure allowed to extract the intrinsic strain coefficients which are mirrored around the undeformed state for principle extension and compression axes. Utilizing the simulation results, stress and strain modifications of the Neo-Hookean strain energy function for dilute composites are proposed.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100100"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000176/pdfft?md5=60b88465649bf9460f333715bd2ad313&pid=1-s2.0-S2666496822000176-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48565253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extracorporeal carbon dioxide removal (ECCO2R): A contemporary review 体外二氧化碳去除(ECCO2R):当代综述

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100095

Katelin Omecinski , Matthew Cove , Abhijit Duggal , William Federspiel

引用次数: 1

Coupled electromagnetic and mechanical modeling and detection of buried objects 地埋物电磁与力学耦合建模与探测

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100106

Mohamed Elbadry , J. Wetherington , M.A. Zikry

引用次数: 0

Ultimate tensile strength and biaxial stress–strain responses of aortic tissues—A clinical-engineering correlation 主动脉组织的极限拉伸强度和双轴应力-应变响应-临床工程相关性

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100101

Hai Dong , Minliang Liu , Xiaoying Lou , Bradley G. Leshnower , Wei Sun , Bulat A. Ziganshin , Mohammad A. Zafar , John A. Elefteriades

{"title":"Ultimate tensile strength and biaxial stress–strain responses of aortic tissues—A clinical-engineering correlation","authors":"Hai Dong , Minliang Liu , Xiaoying Lou , Bradley G. Leshnower , Wei Sun , Bulat A. Ziganshin , Mohammad A. Zafar , John A. Elefteriades","doi":"10.1016/j.apples.2022.100101","DOIUrl":"https://doi.org/10.1016/j.apples.2022.100101","url":null,"abstract":"<div><p>For over a decade, the team from the Aortic Institute at Yale University has worked closely with the bioengineering team of Dr. Wei Sun at Georgia Tech University. This paper presents the products of that collaboration.</p><p>We provide clinical context by describing thoracic aortic dissection and its genesis as a prelude to the bioengineering findings. We discuss the genesis of aortic dissection, from the fundamental underlying genetic abnormality, through the degenerative aortic process, to the acute inciting factors and the dissection event itself. The inciting factor is usually an extreme hypertensive episode, occasioned by exertion or emotion.</p><p>The bioengineering findings include the following: The aortic wall is stronger in the circumferential direction than in the longitudinal. Bicuspid aortic valve and bovine aortic arch morphology do not compromise aortic strength. Biaxial testing reveals a non-liner stress-strain response of aortic tissues. Dissected tissues become stronger over time, reflecting fibrotic connective tissue ingrowth in response to the dramatic tissue injury from the dissection event. Human aortic tissues stiffen at advanced age, in contradistinction to those of aged animals (porcine).</p><p>Combining clinical and bioengineering perspectives yields a more complete and correlative understanding of the genesis of thoracic aortic dissection.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100101"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000188/pdfft?md5=1fa5144a91c67272495875f0ff8062ef&pid=1-s2.0-S2666496822000188-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136799265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Artificial intelligence framework to predict wall stress in abdominal aortic aneurysm 预测腹主动脉瘤壁应力的人工智能框架

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100104

Timothy K. Chung , Nathan L. Liang , David A. Vorp

{"title":"Artificial intelligence framework to predict wall stress in abdominal aortic aneurysm","authors":"Timothy K. Chung , Nathan L. Liang , David A. Vorp","doi":"10.1016/j.apples.2022.100104","DOIUrl":"10.1016/j.apples.2022.100104","url":null,"abstract":"<div><p>Abdominal aortic aneurysms (AAA) have been rigorously investigated to understand when their risk of rupture - which is the 13<sup>th</sup> leading cause of death in the US – exceeds the risks associated with repair. Clinical intervention occurs when an aneurysm diameter exceeds 5.5 cm, but this “one-size fits all” criterion is insufficient, as it has been reported thatup to a quarter of AAA smaller than 5.5 cm do rupture. Therefore, there is a need for a more reliable, patient-specific, clinical tool to aide in the management of AAA. Biomechanical assessment of AAA is thought to provide critical physical insights to rupture risk, but clinical translataion of biomechanics-based tools has been limited due to the expertise, time, and computational requirements. It was estimated that through 2015, only 348 individual AAA cases have had biomechanical stress analysis performed, suggesting a deficient sample size to make such analysis relevant in the clinic. Artificial intelligence (AI) algorithms offer the potential to increase the throughput of AAA biomechanical analyses by reducing the overall time required to assess the wall stresses in these complex structures using traditional methods. This can be achieved by automatically segmenting regions of interest from medical images and using machine learning models to predict wall stresses of AAA. In this study, we present an automated AI-based methodology to predict the biomechanical wall stresses for individual AAA. The predictions using this approach were completed in a significantly less amount of time compared to a more traditional approach (∼4 hours vs 20 seconds).</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100104"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0e/a3/nihms-1925877.PMC10500563.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10670427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Contact mechanics model of lung lobar sliding 肺叶滑动的接触力学模型

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100098

Adam E. Galloy, Ryan E. Amelon, Joseph M. Reinhardt, M.L. Raghavan

{"title":"Contact mechanics model of lung lobar sliding","authors":"Adam E. Galloy, Ryan E. Amelon, Joseph M. Reinhardt, M.L. Raghavan","doi":"10.1016/j.apples.2022.100098","DOIUrl":"10.1016/j.apples.2022.100098","url":null,"abstract":"<div><p>Lobar sliding is an often-overlooked aspect of lung mechanics that presents a potential source of variance in the lung mechanics and physiology of different subjects. The goal of this study was to develop a finite element model suitable for studying lobar sliding in the lungs to gain insights about the extent to which too little or too much lobar sliding impacts breathing. We focused on the left lung as it has a single lobar fissure. The model geometry was derived from whole lung and lobar segmentations of a CT image at end inhalation and was divided into three components: a thoracic cavity outer shell, a volumetric upper lobe, and a volumetric lower lobe. Deformation of the lung tissue was driven by non-zero displacement boundary conditions applied to the thoracic cavity shell to simulate exhalation and contact constraints between each of the three geometric components. To verify the numerical methods used in this contact mechanics model, we replicated a contact mechanics benchmark problem from the literature. Further, numerical simulations were performed to determine the optimal contact mechanics parameters for the lung model. The resulting model displacement field exhibited discontinuities at the lobar fissure indicative of lobar sliding and had an average error of 2.3 mm when compared to displacements between anatomical landmarks on the CT images, which is consistent with lung simulation models in literature. The developed finite element contact mechanics model of the lung is novel in the lung mechanics field and may be interrogated to gain insights about the role of lobar sliding in breathing mechanics.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100098"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000164/pdfft?md5=bfcef4d4113dc6db9ddb16ac983e5e08&pid=1-s2.0-S2666496822000164-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48047607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Asymptotic series solution for plane poroelastic model with non-penetrating crack driven by hydraulic fracture 水力裂缝驱动非穿透性裂纹平面孔弹性模型的渐近级数解

Applications in engineering science Pub Date : 2022-06-01 DOI: 10.1016/j.apples.2022.100089

Hiromichi Itou , Victor A. Kovtunenko , Nyurgun P. Lazarev

{"title":"Asymptotic series solution for plane poroelastic model with non-penetrating crack driven by hydraulic fracture","authors":"Hiromichi Itou , Victor A. Kovtunenko , Nyurgun P. Lazarev","doi":"10.1016/j.apples.2022.100089","DOIUrl":"10.1016/j.apples.2022.100089","url":null,"abstract":"<div><p>A new class of coupled poroelastic problems describing fluid-driven cracks (called fractures) subjected to non-penetration conditions between opposite crack faces (fracture walls) is considered in the incremental form. The nonlinear crack problem for a plane isotropic setting in a two-phase medium is expressed in polar coordinates as a variational inequality with respect to the solid phase displacement and the pore pressure. Applying nonlinear methods, the asymptotic theory and Fourier analysis, a semi-analytic solution given as the power series in the sector of angle <span><math><mrow><mn>2</mn><mi>π</mi></mrow></math></span> is proven using rigorous expansions with respect to the distance to the crack-tip. Here no logarithmic terms occur in the asymptotic expansion. Consequently, a square-root singularity for the poroelastic medium with a non-penetrating crack is derived, and the integral formulas for calculating the corresponding stress intensity factors are obtained.</p></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"10 ","pages":"Article 100089"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666496822000085/pdfft?md5=d2ed601635ee412cb9d97f852722fd3e&pid=1-s2.0-S2666496822000085-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48994499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2