نتایج جستجو برای: contact mechanics models
تعداد نتایج: 1179669 فیلتر نتایج به سال:
The objectives of this study were to describe a technique for measuring in-vivo glenohumeral joint contact patterns during dynamic activities and to demonstrate application of this technique. The experimental technique calculated joint contact patterns by combining CT-based 3D bone models with joint motion data that were accurately measured from biplane x-ray images. Joint contact patterns were...
At the beginning of 1941, Ludwig Föppl published an 8-page paper “Elastische Beanspruchung des Erdbodens unter Fundamenten”. The main result this was further developed by his doctoral student Gerhard Schubert in 1942. These publications and contain many results obtained researchers contact mechanics subsequent decades 20th century. Unfortunately, both papers have been forgotten, which is not pa...
In this paper, we continue the construction of variational integrators adapted to contact geometry started in \cite{VBS}, particular, introduce a discrete Herglotz Principle and corresponding Equations for Lagrangian setting. This allows us develop convenient numerical systems that are conformally by construction. The existence an exact function is also discussed.
One of the factors affecting jump-landing patterns is fatigue. Fatigue is an inevitable component of physical activity, hence the aim of the present study was to investigate the effect of functional fatigue on landing mechanics through Landing Error Scoring System (LESS).Fourteen male college students with a mean age of 22±2 years, weight of 68.3±7.2 kg and height of 174±4 were randomly divi...
The mechanics of contacting cartilage layers is fundamentally important to understanding the development, homeostasis and pathology of diarthrodial joints. Because of the highly nonlinear nature of both the materials and the contact problem itself, numerical methods such as the finite element method are typically incorporated to obtain solutions. Over the course of five decades, we have moved f...
In this article, a causal model on the basis of trajectory is introduced for description of quantum systems. This theory is structurally very similar to Bohme mechanics, and like Bohme theory reproduces all statistical consequences of standard quantum mechanics. Particle trajectories in this model are different from anticipated ones by Bohme model. Quantum potential (force) form, which is give...
in this work, improved heat generation models are developed for straight and tapered shoulder geometries with different tool pin profiles in friction stir welding. the models are developed considering the welding process as a combination of the pure sliding and the pure sticking conditions. from the results, the amount of heat generation is directly proportional to the number of edges in the pi...
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