Analysis and Fem Simulation Methodology of Dynamic Behavior of Human Rotator Cuff in Repetitive Routines: Musician Case Study

Shoulder pain is one of the most common presentations of musculoskeletal pain with population prevalence of between 7 and 26 %. The most common pathology that affects the shoulder joint is rotator cuff syndrome. The most important aspects in the management of patient with shoulder pain by general practitioner are to ensure an accurate diagnosis and to start the appropriate treatment on time. The main direction of rotator cuff syndrome treatment includes a period of rest from the exacerbating activity and taking nonsteroidal anti-inflammatory drugs. In some cases the use of the NSAIDs is not possible, so we decided to suggest an alternative non-pharmacological method of treatment. We treated a patient with rotator cuff syndrome by injections of autologous plasma into the affected muscles and projections of entheses that were involved in the pathological process. We obtained positive results. The shoulder pain had been reduced, mobility and movement had been improved after a course of autologous plasma injections. In our opinion, it is expedient to consider such treatment of the rotator cuff syndrome both as an additional method and separately in case of impossibility of prescribing the main therapy.

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Characterization of tendon cell cultures of the human rotator cuff

10.22203/ecm.v020a08 ◽

2010 ◽

Vol 20 ◽

pp. 84-97 ◽

Cited By ~ 52

Author(s):

S Pauly ◽

◽

F Klatte ◽

C Strobel ◽

G Schmidmaier ◽

...

Keyword(s):

Rotator Cuff ◽

Cell Cultures ◽

Tendon Cell ◽

Human Rotator Cuff

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Estimation of Strain-Hardness Correlation in Cold-Forged Austenitic Stainless Steel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.622-623.179 ◽

2014 ◽

Vol 622-623 ◽

pp. 179-185 ◽

Cited By ~ 3

Author(s):

Piotr Skubisz ◽

Maciej Rumiński ◽

Łukasz Lisiecki

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Strain Hardening ◽

Effective Strain ◽

Cold Deformation ◽

Metal Flow ◽

Fem Simulation ◽

Large Head ◽

The Relationship

The paper presents selected aspects of analysis cold micro-forging process of a screw made of austenitic stainless steel, concerning relation between strain and hardness. Strain hardening character of a material in consecutive forming operations was analyzed experimentally by the measurement of hardness distribution made on longitudinal axial sections of screws. The relationship between hardness and effective strain (hardness curve) was determined, which made it possible to obtain strain distributions in different regions of a material subjected to cold deformation on the basis of strain distribution numerically estimated with FEM simulation performed using QForm2D/3D commercial software. Conclusions were formulated concerning strain inhomogeneity and strain-hardening intensity with respect to the correlation between strain and hardness. It was also concluded, that nonuniformity of hardening rate in a bulk can lead to local variations in flow stress and eventually, to occurrence of the metal flow related defects, which was illustrated with a case study of cold heading of self-tapping screw of AISI 304Cu stainless steel, with large head diameter to shank diameter ratio. In order to validate the obtained results, the same method was used for analysis of hardness development in steel 19MnB4.

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Coupled CFD–FEM Simulation Methodology for Fire-Exposed Bridges

Journal of Bridge Engineering ◽

10.1061/(asce)be.1943-5592.0001770 ◽

2021 ◽

Vol 26 (10) ◽

pp. 04021074

Author(s):

Zhi Liu ◽

Julio Cesar G. Silva ◽

Qiao Huang ◽

Yuji Hasemi ◽

Yili Huang ◽

...

Keyword(s):

Fem Simulation ◽

Simulation Methodology

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A Virtual Verification Environment for the Sequence Control System Using VRML and JAVA

Volume 2: 19th Computers and Information in Engineering Conference ◽

10.1115/detc99/cie-9032 ◽

1999 ◽

Author(s):

Satoshi Kanai ◽

Takeshi Kishinami

Keyword(s):

Control System ◽

Dynamic Behavior ◽

State Transition ◽

Visual Simulation ◽

Transition Model ◽

Simulation Tool ◽

Object Model ◽

State Transition Model ◽

Implementation Method

Abstract This paper describes a visual simulation tool for reliable off-line development, verification and debugging of the control code of the Programmable Logic Controller (PLC) in the sequence control system. First, we discuss the uniform modeling method of the dynamic behavior of various components in a factory (actuators, sensors, operating panels, etc.) as the object model and state transition model. Then we propose the implementation method of the object model by VRML and JAVA. They enable us to uniformly describe the state-transition and corresponding dynamic behavior of the 3-D geometry of each object model. Moreover, we can use a standard VRML viewer which has the event-driven execution mechanism as a visual simulation tool. The effectiveness of proposed implementation and simulation is confirmed through the case study on the co-simulation of combining the component model with a real PLC.

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