Filtry
wszystkich: 135
Wyniki wyszukiwania dla: BIOMECHANICAL
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Modelling and simulation of striated muscle and groups of muscles in arm-forearm system 2D
PublikacjaModel mięśnia szkieletowego poprzecznie prążkowanego został przedstawiony jako szeregowe połączenie aktywnych i pasywnych odcinków reologicznych. Zasymulowane zostały: skurcze pojedyncze, niecałkowity skurcz tężcowy, całkowity skurcz tężcowy. Model zespołu mięśni w układzie ramię-przedramię opisu-je zmianę kąta obrotu przedramienia względem nieruchomego ramienia. Pobudzając zginacze i prostowniki był zasymulowany obrót przedramienia.
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Estimation of flow for tissue perfusion of nutrient liquids in bioreactor.
PublikacjaPrzedstawione zostały problemy związane z wyznaczaniem pola prędkości w warstwie przyściennej opływanej tkanki miękkiej w bioreaktorze. Warunki brzegowe na powierzchni miękkiej tkanki o właściwościach porowatych zostały w niniejszej pracy sformułowane.
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Validation of Hydraulic Mechanism during Blowout Trauma of Human Orbit Depending on the Method of Load Application
PublikacjaThe more we know about mechanisms of the human orbital blowout type of trauma, the better we will be able to prevent them in the future. As long as the buckling mechanism’s veracity is not in doubt, the hydraulic mechanism is not based on equally strong premises. To investigate the correctness of the hydraulic mechanism’s theory, two different methods of implementation of the hydraulic load to the finite element method (FEM) model...
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The Influence of External Additional Loading on the Muscle Activity and Ground Reaction Forces during Gait
PublikacjaAsymmetrical external loading acting on the usculoskeletal system is generally considered unhealthy. Despite this knowledge, carrying loads in an asymmetrical manner like carrying on one shoulder, with one hand, or on the strap across the torso is a common practice. This study is aimed at presenting the effects of the mentioned load carrying methods on muscle activity assessed by using thermal field and ground reaction forces....
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Mechanical and structural investigations of wings of selected insect species
PublikacjaThis paper presents research and measurements leading to obtaining the Young’s modulus of wing bearing structures of selected insect species. A small testing machine intended for three-point bending and equipped with instruments registering low forces was constructed for the needs of the experiment. The machine was used to perform numerous bending tests of wings of three species of insects (obtained from a breeding farm): Attacus...
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Modeling the debonding process of osseointegrated implants due to coupled adhesion and friction
PublikacjaCementless implants have become widely used for total hip replacement surgery. The long-term stability of these implants is achieved by bone growing around and into the rough surface of the implant, a process called osseointegration. However, debonding of the bone–implant interface can still occur due to aseptic implant loosening and insufficient osseointegration, which may have dramatic consequences. The aim of this work is to...
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Biomechanika - W, IB-M, st. I, sem. 5 (PG_00008211) 10.2022
Kursy OnlineKurs Biomechanika (wykład) przeznaczony jest dla studentów 5. semestru studiów dziennych I stopnia, na kierunku Inżynieria Biomedyczna. Kurs zawiera treści w postaci wykładu z zakresu biomechaniki układu narządu ruchu, podstaw kinezjologii, wstępu z neurofizjologii układu ruchu.
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Biomechanika,Wykład,IMM,letni 2022-2023 (PG_00055757)
Kursy Online -
Biomechanika, Ć, IMSiB, sem. 06, letni 21/22 (PG_00048715)
Kursy Online1.Wyznaczenie ruchliwości łańcucha biokinematycznego. (1h) 2. Wyznaczenie położenia środka ciężkości ciała. (3h) 3. Wyznaczenie momentów bezwładności wybranych segmentów ciała. (1.5h) 4. Biomechaniczne modele dynamiczne. (3.5h) 5. Biomechanika zespołu mięśni: zadanie optymalizacji statycznej. (2h)
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Proximal fibular osteotomy as a treatment for degenerative meniscal extrusion
PublikacjaMeniscal extrusion treatment is a key focus area for research and clinical study of degenerative knee pathology. The contact forces between the meniscus and the bones cause external displacements of the meniscus that are resisted by the circumferential fibres. The main risk factors for the excessive deformation of the meniscus are meniscal root tears, disruption of the circumferential fibres, knee malalignment and high body mass...
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Debonding of coin-shaped osseointegrated implants: Coupling of experimental and numerical approaches
PublikacjaWhile cementless implants are now widely used clinically, implant debonding still occur and is difficult to anticipate. Assessing the biomechanical strength of the bone–implant interface can help improving the understanding of osseointegration phenomena and thus preventing surgical failures. A dedicated and standardized implant model was considered. The samples were tested using a mode III cleavage device to assess the mechanical...
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Biomechanika Inżynierska, Ćwiczenia, IMM, sem.IV, I st., sem.letni 2020/2021 (PG_00033002)
Kursy OnlineSpis treści prezentowanych na kursie: 1. Wyznaczenie ruchliwości łańcucha biokinematycznego. 2. Wyznaczenie położenia środka ciężkości ciała człowieka. 3. Biomechanika zespołu mięśni: zadanie optymalizacji statycznej. 4. Wyznaczenie momentów bezwładności wybranych segmentów ciała. 5. Biomechaniczne modele dynamiczne.
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Cost-Effective and Sufficiently Precise Integration Method Adapted to the FEM Calculations of Bone Tissue
PublikacjaThe technique of Young’s modulus variation in the finite element is not spread in biomechanics. Our future goal is to adapt this technique to bone tissue strength calculations. The aim of this paper is to present the necessary studies of the element’s integration method that takes into account changes in material properties. For research purposes, a virtual sample with the size and distribution of mechanical properties similar...
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A significance of multi slip condition for inclined MHD nano-fluid flow with non linear thermal radiations, Dufuor and Sorrot, and chemically reactive bio-convection effect
PublikacjaThe aim of this research is to discuss the significance of slip conditions for magnetized nanofluid flow with the impact of nonlinear thermal radiations, activation energy, inclined MHD, sorrot and dufour, and gyrotactic micro motile organisms over continuous stretching of a two-dimensional sheet. The governing equations emerge in the form of partial differential equations. Since the resultant governing differential equations...
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Biomechanika,Wykład,IM,IMSiB,letni 2022-2023(PG_00048715)
Kursy Online -
Biological and mechanical properties of bone cement with nanoarticles - in vitro and in vivo research
PublikacjaDespite antibiotic preventive treatment both before and after implant implementation, the risks of infection are real. These infections develop at the implant surface a few months after inserting them into the body. To prevent the development of bacteria and reduce the risk of infection, implants coated with nanoparticles are used. The Mechanical Department of the Technical University of Gdansk carries out research into using bone...
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Biomechanika Inżynierska,Wykład,IMM,letni 2021-2022 (M:03516W2)
Kursy OnlineCelem kursu jest zapoznanie studentów z podstawami biomechaniki inżynierskiej
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Biomechanika,Wykład,Seminarium,IM,IMSiB,letni 2021-2022(PG_00048715)
Kursy OnlineCelem kursu jest zapoznanie studentów z podstawami biomechaniki
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Biomechanika - C/L, IMM , st.I, sem. 4 (PG_00055757) 03.2024
Kursy OnlineKurs dla studentów kierunku Inżynieria Mechaniczno-Medyczna sem. 4, studiów inżynierskich dziennych.
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Biomechanika - C/L, IMM , st.I, sem. 4 (PG_00055757) 03.2023
Kursy OnlineKurs dla studentów kierunku Inżynieria Mechaniczno-Medyczna sem. 4, studiów inżynierskich dziennych.
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Biomechanika - C/S, IM , st.I, sem. 6 (PG_00048715) 02.2024
Kursy Online -
The influence of a change in the meniscus cross-sectional shape on the medio-lateral translation of the knee joint and meniscal extrusion
PublikacjaObjective The purpose of this study was to evaluate the influence of a change in the meniscus cross sectional shape on its position and on the biomechanics of a knee joint. Methods One main finite element model of a left knee joint was created on the basis of MRI images. The model consisted of bones, articular cartilages, menisci and ligaments. Eight variants of this model with an increased or decreased meniscus height were then...
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Numerical Model of Femur Part
PublikacjaThe aim of the study is to create a new more accurate method of femur part modelling by using the finite element method. According to this new method, a femur part is treated as a complex structure composed of trabecular bone (internal part) and cortical bone (external part). The internal part is modelled as a scaffold, thus the external part is modelled as a coat (i.e. covering). Applying the programme ABAQUS, there were created...
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Biomechanika,Ćwiczenia, IMSiB, sem.VI, I st. ,sem. letni 2020/2021(PG_00039735)
Kursy OnlineSpis treści prezentowanych na kursie: 1.Wyznaczenie ruchliwości łańcucha biokinematycznego. 2. Wyznaczenie położenia środka ciężkości ciała człowieka. 3.Biomechanika zespołu mięśni: zadanie optymalizacji statycznej. 4. Wyznaczenie momentów bezwładności wybranych segmentów ciała. 5. Biomechaniczne modele dynamiczne.
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Medially positioned plate in first metatarsophalangeal joint arthrodesis
PublikacjaObjective The purpose of this study was to biomechanically compare the stability of first metatarsophalangeal (MTP1) joint arthrodesis with dorsally and medially positioned plates. Methods A physical model of the MTP1 joint consists of printed synthetic bones, a titanium locking plate and screws. In the experiments, samples with dorsally and medially positioned plates were subjected to loading of ground load character in a universal...
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HAL 2010
Zespoły Badawczebadania eksperymentalne, symulacje numeryczne oparte na MES, w dziedzienie mechanika konstrukcji i biomechanika
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Behaviour of orthotropic surgical implant in hernia repair due to the material orientation and abdomen surface deformation
Publikacjarelation to the different range of typical deformations observed in different directions and zones of abdomen surface due to the patients’ life activities, has a significant influence on the extreme junction forces in the mesh–tissue connections and hence the repair persistence. The finite element model of the orthotropic implant was developed, and the junction forces in the connections of tissue and mesh were studied. The kinematical...
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Mathematical modelling of implant in an operated hernia for estimation of the repair persistence
PublikacjaThis paper presents mathematical modelling of an implanted surgical mesh used in the repair process of the abdominal hernia. The synthetic implant is simulated by a membrane structure. The author provides a material modelling of the implant based on the dense net model appropriate for technical fabrics. The accuracy of the proposed solution is evaluated by comparing the simulations of the dynamic behaviour of the system with the...
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Mechanical properties of mosquito nets in the context of hernia repair
PublikacjaThe paper deals with issue of applying mosquito nets as implants in hernia repair, which have already been used in resource-poor developing countries. Uniaxial tensile tests have been conducted on polyester mosquito meshes in two orthogonal directions. Non-linear elastic constitutive laws parameters have been identified to be applied in dense net material models. Mechanical performance of tested mosquito nets has been compared...
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Two-criteria optimisation problem for ventral hernia repair
PublikacjaTwo-criteria optimisation problem related to laparoscopic ventral hernia repair is formulated in this paper. An optimal implant from a given set and its orientation is sought. The implant is subjected to kinematic extortions due to a patient’s body movement and intra-abdominal pressure. The first criterion of the optimisation problem deals with the reaction force in the implant fastener, while the deflection of the implant constitutes...
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Influence of energy absorbers on Malgaigne fracture mechanism in lumbar-pelvic system under vertical impact load
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Combined numerical and experimental approach to determine numerical model of abdominal scaffold
PublikacjaA proper junction of the prosthesis and the abdominal wall is important in successful hernia repair. The number of tacks should be balanced to assure appropriate mesh fixation and not to induce post-operative pain. Numerical simulations help to find this balance. The study is aimed at creating a proper numerical model of a knitted surgical mesh subjected to boundary conditions and load occurring in the abdominal cavity. Continuous,...
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Biomechanika, Ćwiczenia/Seminarium, IM,IMSiB, sem.06, letni 22/23 (PG_00048715)
Kursy OnlineSpis treści prezentowanych na kursie: 1.Wyznaczenie ruchliwości łańcucha biokinematycznego. (1h) 2. Wyznaczenie położenia środka ciężkości ciała człowieka. (3h) 3. Wyznaczenie momentów bezwładności wybranych segmentów ciała. (1.5h) 4. Biomechaniczne modele dynamiczne. (3.5h) 5. Biomechanika zespołu mięśni: zadanie optymalizacji statycznej. (2h) 6. Kolokwium (2h) 7.Kolokwium poprawkowe (2h)
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Numerical analysis of lumbar spine injury during road safety barrier collision
PublikacjaPurpose: Enhancing road safety is a critical goal worldwide, necessitating the development of clear standards for road safety systems. This study focuses on lumbar spine (L-spine) compression injuries during collisions with concrete road safety barriers (RSBs). It aims to analyze internal forces during impact to understand L-spine injury biomechanics in such accidents. Methods: The research included a literature review, analyzing...
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Katedra Mechaniki Budowli
Zespoły BadawczeAktualnie działalność naukowo-badawcza Katedry koncentruje się, na następujących zagadnieniach: modelowanie konstrukcji, identyfikacja modeli, mechanika konstrukcji cienkościennych, konstrukcje kompozytowe, nieliniowa statyka i dynamika, teoria niezawodności, problemy zniszczenia, optymalizacja konstrukcji, analiza wrażliwości, identyfikacja uszkodzeń konstrukcji, analiza wpływu drgań na budowlę, czy biomechanika.