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Related Concept Videos

Kinematic Equations: Problem Solving01:15

Kinematic Equations: Problem Solving

When analyzing one-dimensional motion with constant acceleration, the problem-solving strategy involves identifying the known quantities and choosing the appropriate kinematic equations to solve for the unknowns. Either one or two kinematic equations are needed to solve for the unknowns, depending on the known and unknown quantities. Generally, the number of equations required is the same as the number of unknown quantities in the given example. Two-body pursuit problems always require two...
Simplification of a Force and Couple System: II01:23

Simplification of a Force and Couple System: II

In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...
Kinematic Equations - II01:17

Kinematic Equations - II

The second kinematic equation expresses the final position of an object in terms of its initial position, the distance traveled with the initial constant velocity, and the distance traveled due to a change in velocity. Similar to the first kinematic equation, this equation is also only valid when the acceleration is constant throughout the motion of an object.
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
Kinematic Equations - I01:26

Kinematic Equations - I

When an object moves with constant acceleration, the velocity of the object changes at a constant rate throughout the motion. The kinematic equations of motions are derived for such cases where the acceleration of the object is constant. The first kinematic equation gives an insight into the relationship between velocity, acceleration, and time. We can see, for example:
Kinematic Equations - III01:18

Kinematic Equations - III

The first two kinematic equations have time as a variable, but the third kinematic equation is independent of time. This equation expresses final velocity as a function of the acceleration and distance over which it acts. The fourth kinematic equation does not have an acceleration term and provides the final position of the object at time t in terms of the initial and final velocities. This equation is useful when the value of the constant acceleration is unknown.
Using the kinematic equations,...
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...

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Related Experiment Video

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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

Human hand modelling: kinematics, dynamics, applications.

Agneta Gustus1, Georg Stillfried, Judith Visser

  • 1Technische Universität München, Munich, Germany. agneta.gustus@brml.de

Biological Cybernetics
|November 8, 2012
PubMed
Summary
This summary is machine-generated.

This study presents mathematical models of the human hand, focusing on grasping and manipulation. It examines kinematics, musculotendon structures, and neurocontrol for a comprehensive understanding of hand functionality.

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Area of Science:

  • Biomechanics
  • Robotics
  • Human-Computer Interaction

Background:

  • Existing hand models often focus on surgical applications.
  • There is a need for models that describe human grasping and manipulation capabilities.
  • A comprehensive understanding requires examining the hand at multiple levels.

Purpose of the Study:

  • To provide an overview of current human hand modeling approaches.
  • To offer tools for studying human grasping and manipulation.
  • To describe human hand functionality through integrated modeling.

Main Methods:

  • Kinematic analysis of bone movement.
  • Musculotendon structure analysis for force generation.
  • Integrated modeling of hand dynamics and neurocontrol.

Main Results:

  • Development of a multi-level human hand model.
  • Integration of kinematics, musculotendon dynamics, and neurocontrol.
  • Identification of gaps in current modeling approaches.

Conclusions:

  • The presented models offer an encompassing picture of human hand functionality.
  • The models provide tools for studying grasping and manipulation.
  • This work advances the understanding of human hand biomechanics and control.