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Applied Bionics and Biomechanics

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https://www.readbyqxmd.com/read/28260849/effects-of-gait-speed-of-femoroacetabular-joint-forces
#1
Joshua T Weinhandl, Bobbie S Irmischer, Zachary A Sievert
Alterations in hip joint loading have been associated with diseases such as arthritis and osteoporosis. Understanding the relationship between gait speed and hip joint loading in healthy hips may illuminate changes in gait mechanics as walking speed deviates from preferred. The purpose of this study was to quantify hip joint loading during the gait cycle and identify differences with varying speed using musculoskeletal modeling. Ten, healthy, physically active individuals performed walking trials at their preferred speed, 10% faster, and 10% slower...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28255225/influence-of-different-patellofemoral-design-variations-based-on-genesis-ii-total-knee-endoprosthesis-on-patellofemoral-pressure-and-kinematics
#2
Ulf G Leichtle, Barbara Lange, Yvonne Herzog, Peter Schnauffer, Carmen I Leichtle, Nikolaus Wülker, Andrea Lorenz
In total knee arthroplasty (TKA), patellofemoral groove design varies greatly and likely has a distinct influence on patellofemoral biomechanics. To analyse the selective influence, five patellofemoral design variations were developed based on Genesis II total knee endoprosthesis (original design, being completely flat, being laterally elevated, being medially elevated, and both sides elevated) and made from polyamide using rapid prototyping. Muscle-loaded knee flexion was simulated on 10 human knee specimens using a custom-made knee simulator, measuring the patellofemoral pressure distribution and tibiofemoral and patellofemoral kinematics...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28255224/dual-task-does-not-increase-slip-and-fall-risk-in-healthy-young-and-older-adults-during-walking
#3
Rahul Soangra, Thurmon E Lockhart
Dual-task tests can identify gait characteristics peculiar to fallers and nonfallers. Understanding the relationship between gait performance and dual-task related cognitive-motor interference is important for fall prevention. Dual-task adapted changes in gait instability/variability can adversely affect fall risks. Although implicated, it is unclear if healthy participants' fall risks are modified by dual-task walking conditions. Seven healthy young and seven healthy older adults were randomly assigned to normal walking and dual-task walking sessions with a slip perturbation...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28243053/bionic-design-of-wind-turbine-blade-based-on-long-eared-owl-s-airfoil
#4
Weijun Tian, Zhen Yang, Qi Zhang, Jiyue Wang, Ming Li, Yi Ma, Qian Cong
The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl's wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl's wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance of the wind turbine blade...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28127229/bionic-design-for-mars-sampling-scoop-inspired-by-himalayan-marmot-claw
#5
Long Xue, Rong Rong Zhang, Wei Zong, Jia Feng Song, Meng Zou
Cave animals are often adapted to digging and life underground, with claw toes similar in structure and function to a sampling scoop. In this paper, the clawed toes of the Himalayan marmot were selected as a biological prototype for bionic research. Based on geometric parameter optimization of the clawed toes, a bionic sampling scoop for use on Mars was designed. Using a 3D laser scanner, the point cloud data of the second front claw toe was acquired. Parametric equations and contour curves for the claw were then built with cubic polynomial fitting...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28127228/applications-and-engineering-analysis-of-lotus-roots-under-external-water-pressure
#6
Yiyun Zhu, Chang Jiang Wang, Diane Mynors
Engineers can learn from nature for inspirations to create new designs. The internal structure of lotus roots with several oval holes was studied in this paper for engineering inspirations. The structural performance of lotus roots under outside water pressure was simulated and compared with various cross-sectional areas. The distribution of stresses in the cross-sectional area of lotus roots was analysed and presented. It was found that the maximum compressive stresses in the cross-sectional area of lotus roots were occurring at the long axis ends of the holes...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28115825/a-review-of-artificial-lateral-line-in-sensor-fabrication-and-bionic-applications-for-robot-fish
#7
REVIEW
Guijie Liu, Anyi Wang, Xinbao Wang, Peng Liu
Lateral line is a system of sense organs that can aid fishes to maneuver in a dark environment. Artificial lateral line (ALL) imitates the structure of lateral line in fishes and provides invaluable means for underwater-sensing technology and robot fish control. This paper reviews ALL, including sensor fabrication and applications to robot fish. The biophysics of lateral line are first introduced to enhance the understanding of lateral line structure and function. The design and fabrication of an ALL sensor on the basis of various sensing principles are then presented...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28018127/influence-of-j-curve-spring-stiffness-on-running-speeds-of-segmented-legs-during-high-speed-locomotion
#8
Runxiao Wang, Wentao Zhao, Shujun Li, Shunqi Zhang
Both the linear leg spring model and the two-segment leg model with constant spring stiffness have been broadly used as template models to investigate bouncing gaits for legged robots with compliant legs. In addition to these two models, the other stiffness leg spring models developed using inspiration from biological characteristic have the potential to improve high-speed running capacity of spring-legged robots. In this paper, we investigate the effects of "J"-curve spring stiffness inspired by biological materials on running speeds of segmented legs during high-speed locomotion...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27843284/studying-maximum-plantar-stress-per-insole-design-using-foot-ct-scan-images-of-hyperelastic-soft-tissues
#9
Ali Sarikhani, Abbas Motalebizadeh, Sasan Asiaei, Babak Kamali Doost Azad
The insole shape and the resulting plantar stress distribution have a pivotal impact on overall health. In this paper, by Finite Element Method, maximum stress value and stress distribution of plantar were studied for different insoles designs, which are the flat surface and the custom-molded (conformal) surface. Moreover, insole thickness, heel's height, and different materials were used to minimize the maximum stress and achieve the most uniform stress distribution. The foot shape and its details used in this paper were imported from online CT-Scan images...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27840572/recent-advances-in-biomedical-applications
#10
EDITORIAL
Alberto Borboni, Tadeusz Mikołajczyk, Vera Murgul
No abstract text is available yet for this article.
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27799727/parallel-robot-for-lower-limb-rehabilitation-exercises
#11
Alireza Rastegarpanah, Mozafar Saadat, Alberto Borboni
The aim of this study is to investigate the capability of a 6-DoF parallel robot to perform various rehabilitation exercises. The foot trajectories of twenty healthy participants have been measured by a Vicon system during the performing of four different exercises. Based on the kinematics and dynamics of a parallel robot, a MATLAB program was developed in order to calculate the length of the actuators, the actuators' forces, workspace, and singularity locus of the robot during the performing of the exercises...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27752220/drag-reduction-and-performance-improvement-of-hydraulic-torque-converters-with-multiple-biological-characteristics
#12
Liu Chunbao, Li Li, Lei Yulong, Liu Changsuo, Zhang Yubo
Fish-like, dolphin-like, and bionic nonsmooth surfaces were employed in a hydraulic torque converter to achieve drag reduction and performance improvement, which were aimed at reducing profile loss, impacting loss and friction loss, respectively. YJSW335, a twin turbine torque converter, was bionically designed delicately. The biological characteristics consisted of fish-like blades in all four wheels, dolphin-like structure in the first turbine and the stator, and nonsmooth surfaces in the pump. The prediction performance of bionic YJSW335, obtained by computational fluid dynamics simulation, was improved compared with that of the original model, and then it could be proved that drag reduction had been achieved...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27721648/lower-limb-rehabilitation-using-patient-data
#13
Alireza Rastegarpanah, Mozafar Saadat
The aim of this study is to investigate the performance of a 6-DoF parallel robot in tracking the movement of the foot trajectory of a paretic leg during a single stride. The foot trajectories of nine patients with a paretic leg including both males and females have been measured and analysed by a Vicon system in a gait laboratory. Based on kinematic and dynamic analysis of a 6-DoF UPS parallel robot, an algorithm was developed in MATLAB to calculate the length of the actuators and their required forces during all trajectories...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27688703/analysis-of-peristaltic-motion-of-a-nanofluid-with-wall-shear-stress-microrotation-and-thermal-radiation-effects
#14
C Dhanapal, J Kamalakkannan, J Prakash, M Kothandapani
This paper analyzes the peristaltic flow of an incompressible micropolar nanofluid in a tapered asymmetric channel in the presence of thermal radiation and heat sources parameters. The rotation of the nanoparticles is incorporated in the flow model. The equations governing the nanofluid flow are modeled and exact solutions are managed under long wavelength and flow Reynolds number and long wavelength approximations. Explicit expressions of axial velocity, stream function, microrotation, nanoparticle temperature, and concentration have been derived...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27597807/the-analysis-of-biomechanical-properties-of-proximal-femur-after-implant-removal
#15
Jae Hyuk Yang, Tae Gon Jung, Arjun Rupanagudi Honnurappa, Jae Min Cha, Chang Hwa Ham, Tae Yoon Kim, Seung Woo Suh
Introduction. To compare the biomechanical stability of the femur following the removal of proximal femoral nail antirotation (PFNA-II) and dynamic hip screw (DHS). Material and Methods. 56 paired cadaveric femurs were used as experimental and control groups. In the experimental group, PFNA-II and DHS were randomly inserted into femurs on both sides and then removed. Thereafter, compression load was applied until fracture occurred; biomechanical stability of the femurs and associated fracture patterns were studied...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27594781/a-critical-analysis-of-a-hand-orthosis-reverse-engineering-and-3d-printing-process
#16
Gabriele Baronio, Sami Harran, Alberto Signoroni
The possibility to realize highly customized orthoses is receiving boost thanks to the widespread diffusion of low-cost 3D printing technologies. However, rapid prototyping (RP) with 3D printers is only the final stage of patient personalized orthotics processes. A reverse engineering (RE) process is in fact essential before RP, to digitize the 3D anatomy of interest and to process the obtained surface with suitable modeling software, in order to produce the virtual solid model of the orthosis to be printed...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27594780/a-review-of-instrumented-equipment-to-investigate-head-impacts-in-sport
#17
REVIEW
Declan A Patton
Contact, collision, and combat sports have more head impacts as compared to noncontact sports; therefore, such sports are uniquely suited to the investigation of head impact biomechanics. Recent advances in technology have enabled the development of instrumented equipment, which can estimate the head impact kinematics of human subjects in vivo. Literature pertaining to head impact measurement devices was reviewed and usage, in terms of validation and field studies, of such devices was discussed. Over the past decade, instrumented equipment has recorded millions of impacts in the laboratory, on the field, in the ring, and on the ice...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27578961/sefre-semiexoskeleton-rehabilitation-system
#18
Winai Chonnaparamutt, Witsarut Supsi
SEFRE (Shoulder-Elbow-Forearm Robotics Economic) rehabilitation system is presented in this paper. SEFRE Rehab System is composed of a robotic manipulator and an exoskeleton, so-called Forearm Supportive Mechanism (FSM). The controller of the system is developed as the Master PC consisting of five modules, that is, Intelligent Control (IC), Patient Communication (PC), Training with Game (TG), Progress Monitoring (PM), and Patient Supervision (PS). These modules support a patient to exercise with SEFRE in six modes, that is, Passive, Passive Stretching, Passive Guiding, Initiating Active, Active Assisted, and Active Resisted...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27578960/design-concepts-of-polycarbonate-based-intervertebral-lumbar-cages-finite-element-analysis-and-compression-testing
#19
J Obedt Figueroa-Cavazos, Eduardo Flores-Villalba, José A Diaz-Elizondo, Oscar Martínez-Romero, Ciro A Rodríguez, Héctor R Siller
This work explores the viability of 3D printed intervertebral lumbar cages based on biocompatible polycarbonate (PC-ISO® material). Several design concepts are proposed for the generation of patient-specific intervertebral lumbar cages. The 3D printed material achieved compressive yield strength of 55 MPa under a specific combination of manufacturing parameters. The literature recommends a reference load of 4,000 N for design of intervertebral lumbar cages. Under compression testing conditions, the proposed design concepts withstand between 7,500 and 10,000 N of load before showing yielding...
2016: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/27578959/numerical-analysis-of-hydrodynamics-for-bionic-oscillating-hydrofoil-based-on-panel-method
#20
Gang Xue, Yanjun Liu, Muqun Zhang, Hongpeng Ding
The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish...
2016: Applied Bionics and Biomechanics
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