Rat models are widely used in preclinical studies investigating fracture healing. The interfragmentary movement at a fracture site is critical to the course of healing and therefore demands definition in order to aptly interpret the experimental results. Estimation of this movement requires knowledge of the fixation stiffness and loading. The characteristic loading for the rat femur has been es...

The aim of this article is to expand the general approach flexible beam model consider tapered geometry and anisotropic properties by updating cross-sectional stiffness matrix. advantage that continuously variable cross-section, as well irregular axes on cross-sections, are considered simultaneously co-rotational method. Anisotropic isotropic cantilevered cases simulated. A static force or mome...

This paper aims to investigate the combined effects of working condition and structural parameters groove texture on dynamic characteristics, stability unbalance response a water-lubricated hydrodynamic bearing–rotor system avoid instability excessive vibration rotor. The Navier–Stokes equation, standard K-? model with enhanced wall treatment Zwart–Gerber–Belamri cavitation are considered using...

Abstract The purpose of this study is to further the dynamic characteristics gun turret under firing load. Firstly, relative motion between inner ring and outer was decomposed into axial translational motion, radial rotational freedom in two orthogonal planes order solve problem large number ball bearings complex contact calculation actual structure ring. Then, equivalent mathematical model est...

a palatal defect may result from surgical resection, and its consequences could include difficulty in speech and nasal regurgitation of food and liquids. an obturator combined to speech aid prosthesis can improve nasal emission during speech,  and  assist  in  preventing  nasal  regurgitation  of  food.  this  article presents a clinical report of the reconstruction of palatopharyngeal function...

The paper deals with the preparation of an experiment semi-rigid timber connections using modern connectors Rothoblaas Alumidi. consists loading a bracket structural wood. This is attached to glue laminated beam Alumidi connector. There are few specimens, which will be examined. Each specimen differs in number and measurements beams. deformations connection itself, as well deformation measured ...

This paper presents a new approach that can enhance the rotational capacity of exposed base plate connections without degrading initial stiffness or strength standard configuration. By inserting steel sleeve with designated geometry between and anchor rod washer, load path end be interrupted, promoting more ductile response. Exposed various geometries are numerically investigated using validate...

A geared rotor system model consisting of UPE gears and steel for medium speed, load long servo time is proposed. The solid models steel-steel, steel-UPE UPE-UPE gear systems were established. dynamic reconstructed by using the theoretical mechanical UPE. time-varying meshing stiffness three analyzed. vibration responses are studied STFT method. loads under different rotational speeds researche...

Although there are many methods for assessing vertical stiffness of footings on the ground, simplified solutions to evaluate lateral, rotational, and torsional static much more limited, particularly nonhomogeneous profiles shear modulus with depth. This paper addresses topic by introducing a novel “work-equivalent” framework develop new design estimating stiffnesses under multiple degrees-of-fr...