Mechanical Stress
Mechanical Stress - Related Videos
05:08
A TNBS-Induced Rodent Model to Study the Pathogenic Role of Mechanical Stress in Crohn's Disease
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Cited by 5 •
2022
The present protocol describes the development of a Crohn's-like colitis model in rodents. Transmural inflammation leads to stenosis at the TNBS instillation site, and mechanical enlargement is observed in the segment proximal to the stenosis. These changes allow studying mechanical stress in colitis.
07:34
A Cost-effective and Reliable Method to Predict Mechanical Stress in Single-use and Standard Pumps
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Cited by 4 •
2015
Shear stress investigations on an oil-water emulsion system result in drop breakup over the experimental time. To count drop sizes in pumping processes, the suitability of inline endoscopy was successfully demonstrated in this protocol.
13:37
A Mouse Tumor Model of Surgical Stress to Explore the Mechanisms of Postoperative Immunosuppression and Evaluate Novel Perioperative Immunotherapies
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Cited by 32 •
2014
A mouse tumor model of surgical stress is used to explore how postoperative immune suppression promotes metastatic disease and to evaluate immunostimulatory perioperative therapies.
14:53
Stress-Strain Characteristics of Aluminum
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Aluminum is one of the most abundant materials in our lives, as it is omnipresent in everything from soda cans to airplane components. Its widespread use is relatively recent (1900AD), primarily because aluminum does not occur in its free state, but rather in combination with oxygen and other elements, often in the form of Al2O3. Aluminum was originally obtained from bauxite mineral deposits...
08:14
Modeling Social Stress
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2023
Stress negatively affects our quality of life. In particular, some individuals experience social stress when placed in a social environment that they are unfamiliar with or have difficulty adjusting to. Since it is hard to examine mechanisms of social stress in humans, modeling this condition in animals may help scientist in developing new therapies for treating this commonly encountered problem. This science education video begins by discussing the known anatomy and physiology behind stress...
FAQs
For a given applied force, distributing that force across a larger area produces a lower calculated stress, while concentrating it over a smaller area produces a higher value. This relationship helps explain why geometry matters in structural analysis. Comparing force and load-bearing area allows researchers and engineers to identify configurations more likely to tolerate an imposed load.
Tension pulls a solid apart, whereas compression pushes material together. Shear acts across a material, and twisting applies rotational loading. These loading modes can produce different deformation patterns and failure risks, so stress analysis must consider how the force is applied rather than treating every load as equivalent. The distinction supports more appropriate component and material evaluation.
The outcome depends on material properties, geometry, and loading conditions. An elastic material can recover its original form after unloading, but excessive loading may lead to yielding or fracture. Geometry and loading also influence buckling, in which a component loses stability. Considering these factors together helps distinguish recoverable deformation from permanent damage or structural failure.
A practical analysis begins by identifying the external load, its direction, and the area carrying it. The relevant loading mode, such as tension, compression, shear, or twisting, is then considered alongside the component’s material and geometry. Finally, the predicted deformation or failure possibility is compared with the intended use to judge structural safety.
Stress analysis provides a framework for interpreting measurements of material deformation under load. By relating the applied force and load-bearing area to the observed response, researchers can examine how a material behaves under particular loading conditions. This connection helps evaluate material properties and determine whether deformation remains recoverable or signals yielding, fracture, or another structural concern.
The analysis supports material selection and safety decisions in buildings, machines, and vehicles, where components must withstand specified forces. It also applies to biological systems, extending the study beyond manufactured structures. In each setting, examining loading, geometry, material behavior, and deformation helps predict performance and guide designs intended to resist damage or instability.