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General Case of Eccentric Axial Loading

General Case of Eccentric Axial Loading

Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical bending,...

Eccentric Loading

Eccentric Loading

Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under load.

Eccentric Axial Loading in a Plane of Symmetry

Eccentric Axial Loading in a Plane of Symmetry

Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.

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Related Experiment Video

Updated: Jun 24, 2026

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

Published on: May 2, 2021

Multi-segment trunk kinematics during a loaded lifting task for elderly and young subjects.

R J Burgess¹, S Hillier, D Keogh

¹Huggins Hospital, Wolfeboro, NH, USA.

|March 20, 2009

Summary

Elderly individuals exhibit altered trunk motion during lifting tasks, with increased displacement and reduced range of motion in key segments. This segmental trunk kinematics difference may increase their risk of injury and falls.

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Method to Measure Tone of Axial and Proximal Muscle

Method to Measure Tone of Axial and Proximal Muscle

Published on: December 14, 2011

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Last Updated: Jun 24, 2026

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

Published on: May 2, 2021

Method to Measure Tone of Axial and Proximal Muscle

Method to Measure Tone of Axial and Proximal Muscle

Published on: December 14, 2011

Area of Science:

Biomechanics
Human Movement Science
Gerontology

Background:

Manual handling often simplifies trunk motion to a single segment, overlooking multi-segmental contributions.
Understanding age-related changes in trunk kinematics is crucial for injury prevention during lifting tasks.

Purpose of the Study:

To compare segmental trunk motion between young and elderly populations during a standardized lifting task.
To investigate the influence of stance conditions on trunk kinematics in different age groups.

Main Methods:

Twelve elderly and 19 young subjects performed repeated lifting of a 5 kg box.
Electromagnetic tracking system recorded displacement and angular kinematics of trunk segments (pelvis, lumbar, thorax).

Main Results:

Elderly subjects showed significantly greater pelvic and trunk displacement.
Elderly subjects exhibited significantly reduced range of motion in the pelvis and lower thorax (T10-L1).
Upper thorax (C7-T10) motion was sometimes greater than lumbar motion and contrasted with lower segment movements.

Conclusions:

Decreased segmental trunk angular kinematics in the elderly may lead to increased displacement, heightening the risk of injury and falls.
Multi-segmental analysis of trunk mechanics is essential, revealing unique contributions of the pelvis, lumbar spine, and thorax segments.
Reduced pelvic and lower thoracic angular motion in the elderly contributes to increased displacement kinematics, elevating fall risk compared to younger individuals.