Static Impingement
Static Impingement - Related Videos
13:29
Jet Impinging on an Inclined Plate
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The goal of this experiment is to demonstrate how a fluid flow exerts forces on structures by conversion of dynamic pressure into static pressure. To this end, we will make a plane jet impinge on a flat plate and will measure the resulting pressure distribution along the plate. The resultant force will be estimated by integrating the product between the...
08:19
Murine Hind Limb Explant Model for Studying the Mechanobiology of Achilles Tendon Impingement
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2023
We present a custom experimental platform and tissue culture protocol that recreates fibrocartilaginous change driven by impingement of the Achilles tendon insertion in murine hind limb explants with sustained cell viability, providing a model suitable for exploring the mechanobiology of tendon impingement.
11:31
Determination of Impingement Forces on a Flat Plate with the Control Volume Method
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The purpose of this experiment is to demonstrate forces on bodies as the result of changes in the linear momentum of the flow around them using a control volume formulation [1, 2]. The control volume analysis focuses on the macroscopic effect of flow on engineering systems, rather than the detailed description that could be achieved with a differential...
08:10
Synthesizing Lipid Nanoparticles by Turbulent Flow in Confined Impinging Jet Mixers
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Cited by 21 •
2024
A detailed protocol for synthesizing lipid nanoparticles (LNPs) using confined impinging jet (CIJ) mixer technologies, including a two-jet CIJ and a four-jet multi-inlet vortex mixer (µMIVM), is demonstrated. The CIJ mixers generate reproducible, turbulent micro-mixing environments, resulting in the production of monodisperse LNPs.
01:05
Static Equilibrium - I
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2023
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
FAQs
The critical mechanism is reduced clearance between joint surfaces and neighboring structures. A fixed geometric relationship or alignment abnormality can bring tissues into contact even when the analysis holds the configuration at a defined position. Bioengineering models therefore examine how anatomy establishes available space, because that space determines whether loading is transferred normally or concentrated at a contact region.
When clearance decreases, the model can reveal contact and elevated stress rather than merely recording restricted motion. These mechanical changes also alter force transmission across the joint. Examining them together helps connect a structural constraint with possible consequences such as pain, tissue damage, limited motion, or compromised long-term joint performance.
The distinction is whether the limiting interaction is attributable primarily to fixed structure or to movement through a range of positions. Static analysis focuses on anatomy, alignment, and structural abnormalities under specified loading and positioning. Comparing it with motion-dependent behavior helps researchers determine whether restricted clearance is present because of the configuration itself or emerges during movement.
A typical analysis begins by representing the joint surfaces and surrounding structures, followed by testing specified positions and loads. The model is then evaluated for reduced clearance, contact, elevated stress, and changes in force transmission. This workflow converts anatomical and loading information into mechanical evidence that can support interpretation of a suspected structural constraint.
It allows researchers to connect structural geometry and alignment with clearance, contact, stress, and force transmission under defined conditions. That information can support evaluation of how an implant or planned intervention relates to surrounding anatomy, while also helping identify configurations associated with pain, limited motion, tissue damage, or poorer long-term joint performance.
In injury assessment, the framework helps relate structural conditions to mechanical consequences rather than treating symptoms or restricted motion in isolation. In biomechanical simulation, researchers can test defined anatomical positions and loads and examine resulting clearance, contact, stress, and force transmission. These outputs help characterize how structural constraints may affect joint behavior over time.