title: Semianalytical Solution for the Deformation of an Elastic Layer under an Axisymmetrically Distributed Power-Form Load: Application to Fluid-Jet-Induced Indentation of Biological Soft Tissues.
abstract: Fluid-jet-based indentation is used as a noncontact excitation technique by systems measuring the mechanical properties of soft tissues. However, the application of these devices has been hindered by the lack of theoretical solutions. This study developed a mathematical model for testing the indentation induced by a fluid jet and determined a semianalytical solution. The soft tissue was modeled as an elastic layer bonded to a rigid base. The pressure of the fluid jet impinging on the soft tissue was assumed to have a power-form function. The semianalytical solution was verified in detail using finite-element modeling, with excellent agreement being achieved. The effects of several parameters on the solution behaviors are reported, and a method for applying the solution to determine the mechanical properties of soft tissues is suggested.
authors.affiliation: Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, Shenzhen, China.
authors.forename: Minhua
authors.initials: M
authors.lastname: Lu
authors.affiliation: Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, Shenzhen, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Huang
authors.affiliation: College of Civil Engineering, Shenzhen University, Shenzhen, China.
authors.forename: Xianglong
authors.identifier: 0000-0001-6123-6007
authors.initials: X
authors.lastname: Yang
authors.affiliation: College of Civil Engineering, Shenzhen University, Shenzhen, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.affiliation: Guangdong Province Key Laboratory of Popular High Performance Computers, College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Mao
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D002358:Cartilage, Articular / Q000502:physiology*; D003238:Connective Tissue / Q000502:physiology*; D004548:Elasticity; D008962:Models, Theoretical; D011312:Pressure; D013314:Stress, Mechanical