Rigid polyurethane (PUR) foam is products used as a biomedical material for medical device testing. Thermal stability very important parameter evaluating the feasibility of use testing surgical instrument load during drilling. This work aimed to perform experimental measurements determine dependence mechanical properties certified PUR on temperature, strain rate and density. Experimental were realised three types samples with different density 10, 25 40 pounds per cubic foot. The...

Determination of muscle forces in individual muscles is often essential to assess optimal performance human motion. Inverse dynamic methods based on the kinematics given motion and use optimisation approach are most widely used for force estimation. The aim this study was estimate how choice model influences predicted forces. Huxley's (1957, Prog Biophys Biop Chem. 7: 255–318) Hill's (1938, Proc R Soc B. 126: 136–195) models were determination two antagonistic lower extremity during cycling....

Hippotherapy is a method used for relaxation and balancing of trunk muscles, especially paravertebral postural muscles. It form physical occupational therapy in which therapist uses t...

"Computation of forces acting in temporomandibular joint and masticatory muscles during mastication." Computer Methods Biomechanics Biomedical Engineering, 14(sup1), pp. 267–268Keywords: jointmuscle forcesmasticatory Acknowledgement This research study was supported by grant MSM 6840770012.

The purpose of this study was to experimentally measure and simulate thermal diffusion in the surrounding specific dental drills with cylindrical conical drills. investigation performed under different drilling conditions, without cooling at revolution speeds. During experimental investigation, into a polyurethane (PUR) foam block, cooling, three speeds, 800 rpm, 3,000 rpm 5,000 rpm. Finite element method (FEM) simulation during PUR also performed. As result, temperature found surroundings...

This paper systematically explores the mechanical properties of facial and cranial bones, aiming to contribute understanding brain cervical spine injuries from a mechanical/biomechanical perspective. The research also seeks provide insights applicable in forensic practice, bridging gap for engineering professionals not typi-cally involved medicine. Strength stiffness parameters cra-nial bones were utilized analyze forces leading fractures, proposing simple analyt-ical approach determining...

Rigid polyurethane (PUR) foam, which has an extensive range of construction, engineering, and healthcare applications, is commonly used in technical practice. PUR foam a brittle material, its mechanical material properties are strongly dependent on temperature strain rate. Our work aimed to create robust FE model enabling the simulation machining verify results simulations using experiments’ results. We created complex Arbitrary Lagrangian–Eulerian (ALE) method. In developed model,...

This study, investigated the accuracy, practicality, and sensitivity of several different methods calculating muscle forces during functional activities in humans. The upper extremity dynamic system was chosen, where movement flexion / extension elbow joint studied. redundant mechanisms were solved using optimization criteria with without models individual muscles according to their active passive properties. Exploration control problem for performed tendon activation dynamics. Comparisons...

Flutter of the airplane is serious problem which carefully investigated during design and testing both computationally experimentally. The lightweight plane dynamics however influenced by pilot, his muscular transfer function. This study shortly describes results experimental investigation pilot's modal characteristics from 1 Hz up to 70 Hz. Next discusses pilot influence on parameters longitudinal flight control system airplane. change aimed natural frequency damping. also flutter velocity...

Today artificial neural networks can be trained to solve problems that are difficult for conventional computers or human beings. The big advantage of an network is results obtained without knowledge the algorithm procedure full and exact information. Therefore art ificial was used predict muscle forces. aim study simplify prediction forces which determine, because many muscles act cooperatively. However, orthopeadists, biomechanical engineers physical therapists need take into consideration...

In studies testing the effect of hippotherapy on human body, no one has yet compared involvement same specific muscles in exercises a gymnastic (pommel) horse vs. walking horse. To improve correct riding seat and to compare differences electromyographic activity, we conducted an experimental study measure activity selected set probands both sexes during three We measured eight muscles, expressed as percentage value maximal voluntary contraction. Maximal contraction each muscle was...