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Related Concept Videos

Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Mesh Analysis01:20

Mesh Analysis

Mesh analysis is a valuable method for simplifying circuit analysis using mesh currents as key circuit variables. Unlike nodal analysis, which focuses on determining unknown voltages, mesh analysis applies Kirchhoff's voltage law (KVL) to find unknown currents within a circuit. This method is particularly convenient in reducing the number of simultaneous equations that need to be solved.
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...

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Related Experiment Video

Updated: Jun 21, 2026

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Finite element model development of a child pelvis with optimization-based material identification.

Jong-Eun Kim1, Zuoping Li, Yasushi Ito

  • 1Department of Mechanical Engineering, University of Alabama at Birmingham, Hoehn 330B, Birmingham, AL 35294, USA. jkim@uab.edu

Journal of Biomechanics
|August 4, 2009
PubMed
Summary

This study developed and validated a finite element (FE) model of a child

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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

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Last Updated: Jun 21, 2026

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
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Published on: April 11, 2018

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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Published on: July 2, 2021

Area of Science:

  • Biomechanics
  • Pediatric Orthopedics
  • Computational Modeling

Background:

  • Pediatric pelvic injury research requires accurate biomechanical models.
  • Existing models often lack age-specific validation.
  • Understanding pediatric pelvic response to impact is crucial for safety.

Purpose of the Study:

  • To develop and validate a finite element (FE) model of a 10-year-old child's pelvis.
  • To simulate lateral impacts on the pediatric pelvis.
  • To establish a foundation for age-dependent musculoskeletal models in children.

Main Methods:

  • Reconstructed pelvic geometry from CT scans.
  • Generated hexahedral mesh using an octree-based technique.
  • Validated the FE model against experimental lateral impact data.
  • Employed an optimization-based method for material parameter identification.

Main Results:

  • Successfully developed and validated a child-specific pelvic FE model.
  • Identified key material parameters influencing model response.
  • Demonstrated the model's ability to replicate experimental biomechanical responses.

Conclusions:

  • The validated pediatric pelvic FE model is a valuable tool for injury research.
  • This age-dependent model can aid in evaluating pediatric injury mechanisms.
  • The developed methodology supports the creation of musculoskeletal models for children.