A5080449556- Bone fractures and treatments
- Mechanical and Thermal Properties Analysis
- Orthopaedic implants and arthroplasty
- Belt Conveyor Systems Engineering
- Probabilistic and Robust Engineering Design
- Pelvic and Acetabular Injuries
- Structural Health Monitoring Techniques
- Hip and Femur Fractures
- Metallurgy and Material Forming
- Railway Engineering and Dynamics
- Mechanical stress and fatigue analysis
- Orthopedic Surgery and Rehabilitation
- Composite Structure Analysis and Optimization
- Geotechnical and Geomechanical Engineering
- Metallurgical Processes and Thermodynamics
- Vibration and Dynamic Analysis
- Titanium Alloys Microstructure and Properties
- Microstructure and Mechanical Properties of Steels
- High-pressure geophysics and materials
- Geodetic Measurements and Engineering Structures
- Mechanical Engineering Research and Applications
- Metal Alloys Wear and Properties
- Engineering Structural Analysis Methods
- Environmental and Sediment Control
- Effects of Vibration on Health
VSB - Technical University of Ostrava
2015-2024
University of Ostrava
2019-2024
Institute of Applied Mechanics
2020
University Hospital Ostrava
2012-2020
University of Pardubice
2019
Pardubice Region
2019
Metric Systems Corporation (United States)
2018
Mechanics' Institute
2013
American Society of Safety Professionals
2012
Silesian University in Opava
2012
Anodization coloring of titanium tools or implants is one the common methods for differentiation each application by its size type. Commercial purity grade 4 plates (50 × 20 0.1 mm) were tested to obtain their electrochemical and other technological properties. The process was done using potential 15, 30, 45, 60, 75 Volts 5 s in 1 wt. % citric acid demineralized water solution. Organic acids solutions generally produce better surface quality compared inorganic acids. contact angle colored...
This article deals with the problem of loose materials, i.e., wheat grain, when transported by belt conveyors cover belts. For purpose further research, experimental measurements deflections a conveyor material were carried out on self-built laboratory test device. The mechanical contact between and could be suitably approximated using an elastic foundation. measured data evaluated used to obtain functional relationships for compressibility moduli bilateral Winkler obtained stochastically...
This paper represents a multidisciplinary approach to biomechanics (medicine engineering and mathematics) in the field of collum femoris fractures, i.e., osteosyntheses with femoral/cancellous screws full or cannulated cross-sections. It presents our new numerical model femoral together their stochastic (probabilistic, statistical) assessment. In first part this article, simple is presented. The model, based on theory planar (2D) beams an elastic foundation 2nd-order theory, characterized by...
This article is focused on the design of external fixators applied in traumatology and orthopaedics. These have been designed Czech Republic they can be used treatment open unstable (i.e. complicated) fractures limbs, pelvis its acetabulum. Two versions old new) are compared evaluated. Numerical modelling Finite Element Method), together with CAD modelling, experiments, material engineering nanotechnology presented as a support for developing new fixators.
Paper focuses on biomechanics, specifically locking cortical bone screws in angularly stable plates used for the treatment of fractures medical fields traumatology and orthopaedics. During extraction titanium-alloy implants, problems are encountered an effort to loosen some from holes plate subsequent stripping internal hexagon screw head. The self-locking screw-plate threaded joint was verified by calculation effect angle thread head evaluated. magnitude torque, causing (the Inbus type...
A significant negative aspect in the operation of bridge-type cranes are technical problems associated with wear wheels and crane track, which causes skewing. The main skewing include unevenness unequal loading traction drives depending on position trolley, slips different sizes travel combinations these causes. Firstly, this paper presents a design solution that can be used to detect magnitude mechanical stress deformation steel structure crane, caused by effects generated transverse forces...
One of the possible ways to transfer tractive power a drive unit traction element is use fibre friction. When steel rope used as element, there in groove created on perimeter rim driving sheave. The transmission capability directly proportional size angle wrap and shear friction coefficient surface when contact with wall. relationship for calculating grooves given by relevant technical standards. determined this way does not take into account state operational contamination or diameter used....
This article represents a multidisciplinary approach to biomechanics (engineering + medicine) in the field of "collum femoris" fractures. One possible treatment method for femoral neck fractures, especially young people, is application cancellous (i.e. lag or femoral) screws (with full cannulated cross-section) made Ti6Al4V stainless steel. paper therefore aims offer our own numerical model together with an assessment them. The new, simple presented here derived inputs and boundary...
The paper deals with the electrical and mechanical properties of rubber blends filled by single wall carbon nanotubes (SWCNT-0,6 weight %). We have investigated alternating current resistivity (ACR ), real imaginary part dielectric constant,and loss factor .The addition (SWCNT) to a blend decreases ACR increases constants ,and .
Limb asymmetry can, and often does, cause various health problems. Blount bone staples (clips) are used to correct such uneven growth. This article analyzes the performance of a biomechanical staple during (tibia) growth arrest. The considered in this study were made 1.4441 stainless steel, model tibia consisted two materials representing corticalis spongiosis. Hooke’s law was for modeling materials’ behaviors finite element analysis (FEA). maxima stress total displacement evaluated using...
Abstract The present paper deals with the calculation of stresses on pipeline system embedded a flexible substrate which is burdened by landslide. As well as taking into account probability influences acting pipe wall thickness, and others.
The solution of the interaction between a structure and its foundation is an important problem in mechanics technical applications. This paper presents circular plate rested on elastic (Winkler) foundation. A jig was created for purpose loading with specific bending moment force circumference. Laboratory testing performed to determine deflection centre at edge plate. Measurement apparatus assembled measurements were carried out; results measurement compared analytical solutions FEM results....
Abstract This article deals with a simple planar and statically determinate pin-connected truss. It demonstrates the processes methods of derivations solutions according to 1 st 2 nd order theories. The applies linear nonlinear approaches their simplifications via Maclaurin series. Programming connected stochastic Simulation-Based Reliability Method (i.e. direct Monte Carlo approach) is used conduct probabilistic reliability assessment calculation probability that plastic deformation will...
This article is focused on the theory of straight and curved beams elastic (Winkler's) foundation.For solution these problems mechanics, Finite Difference Method (i.e.Central Method) can be applied.The basic information about finite differences their application are explained. AbstraktČlánek je zaměřen na teorii přímých a křivých nosníků pružném (Winklerově) podkladu.Pro řešení těchto úloh mechaniky, může být použita metoda konečných diferencí (tj.metoda centrálních diferencí).
This article (as a continuation of the former work published in this journal), is focused on theory and applications beams elastic (Winkler's) foundation.For solution these problems mechanics, Finite Difference Method can be applied.Practical examples (i.e.beams with constant or variable stiffness foundation) are explained solved (Matlab software). AbstraktČlánek (jako pokračování předchozí práce publikované v tomto časopise) je zaměřen na teorii aplikaci nosníků pružném (Winklerově)...
This article deals with a new original analytical solution of deformation, force and stress states in wood screw joints up to the limit values pulling out/breaking screw. The screws are under tension. wood-to-screw interaction is effectively simplified by introducing several physical model variants using tangential elastic non-linear foundation. experimental verification proposed models pull-out tests (i.e., out from dry spruce laboratory conditions) confirms correctness linear/non-linear...
This paper presents numerical solutions of straight plane beam structures rested on an elastic (Winkler's) foundation. It is a continuation our previous work (see Part 1 this article) focused practical applications and including nonlinearities in the foundation (i.e. bilateral linear, linear + cubic, cubic quintic approximations unilateral approximation for dependencies reaction forces deflection foundation). For nonlinear problems mechanics differential 4 th -order equations), Finite...
This paper presents theory, experiments and numerical approaches suitable for the solution of straight plane beams rested on an elastic (Winkler's) foundation, including nonlinearities. The nonlinear dependence reaction force displacement in foundation (i.e. experimental data) can be described via bilateral linear or + cubic quintic approximations, by unilateral approximation using Least Squares Method). These applications lead to differential 4 th -order equations. For solutions problems...