相关实验视频

Updated: Jan 17, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

1.5K

在声学和大波传输下粘弹性耳部件的有限元模型

John Bradshaw, Roshan Sharma, Marcus Brown

    Military medicine
    |September 23, 2025
    PubMed
    概括

    这项研究开发了科尔蒂器官的粘弹性有限元素模型,以准确模拟爆炸和声波对听力的影响. 新模型揭示了材料特性如何影响毛细胞损伤风险.

    更多相关视频

    Author Spotlight: Development of a Laser-Induced Shock Wave Animal Model Without Tympanic Membrane Perforation05:44

    Author Spotlight: Development of a Laser-Induced Shock Wave Animal Model Without Tympanic Membrane Perforation

    Published on: March 1, 2024

    948
    A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials11:28

    A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

    Published on: May 18, 2015

    12.9K

    相关概念视频

    Anatomy of the Ear01:16

    Anatomy of the Ear

    Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
    11.1K
    Members Made of Elastoplastic Material01:19

    Members Made of Elastoplastic Material

    The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
    As the bending moment...
    372
    Bending of Members Made of Several Materials01:11

    Bending of Members Made of Several Materials

    In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
    Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
    564
    The Cochlea01:13

    The Cochlea

    The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
    50.6K
    Dynamic Modulus of Elasticity of Concrete01:16

    Dynamic Modulus of Elasticity of Concrete

    The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
    The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by a...
    943
    Elastic Strain Energy for Shearing Stresses01:20

    Elastic Strain Energy for Shearing Stresses

    As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
    483