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Machines: Problem Solving II

Machines: Problem Solving II

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.

Internal Loadings in Structural Members: Problem Solving

Internal Loadings in Structural Members: Problem Solving

When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal loadings...

Deformation of Member under Multiple Loadings

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...

Impact Loading

Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
In cases of elastic deformation,...

Load along a Single Axis

Load along a Single Axis

In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...

Machines: Problem Solving I

Machines: Problem Solving I

A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...

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Related Experiment Video

Updated: May 25, 2026

Application of Design Aspects in Uniaxial Loading Machine Development

Application of Design Aspects in Uniaxial Loading Machine Development

Published on: September 19, 2018

Load identification during object handling.

H G Kortier¹, P H Veltink

¹MIRA institute of Biomedical Technology and Technical Medicine, University of Twente, 7500 AE Enschede, The Netherlands. h.g.kortier@utwente.nl

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|January 19, 2012

Summary

This summary is machine-generated.

This study introduces a novel method to identify environmental loads by measuring forces and movement during human interaction. This technique accurately estimates load characteristics, crucial for understanding human-body-load dynamics.

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Intermediate Strain Rate Material Characterization with Digital Image Correlation

Intermediate Strain Rate Material Characterization with Digital Image Correlation

Published on: March 1, 2019

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Last Updated: May 25, 2026

Application of Design Aspects in Uniaxial Loading Machine Development

Application of Design Aspects in Uniaxial Loading Machine Development

Published on: September 19, 2018

Intermediate Strain Rate Material Characterization with Digital Image Correlation

Intermediate Strain Rate Material Characterization with Digital Image Correlation

Published on: March 1, 2019

Area of Science:

Biomechanics
Human-Computer Interaction
Robotics

Background:

Understanding environmental loads is critical for designing safe and efficient human-robot interactions.
Quantifying dynamic characteristics of loads during manual handling is challenging.

Purpose of the Study:

To propose and validate a new concept for identifying environmental loads through sensing interface forces and movement.
To estimate the dynamic characteristics of mass and spring loads during human interaction.

Main Methods:

An instrumented handle measured kinematic and kinetic quantities between the hand and the load.
Force was measured using a force transducer; movement was captured by an accelerometer and rate gyroscope.
Dynamic characteristics were estimated when the human actively generated force on a passive load.

Main Results:

The proposed method accurately estimated the dynamic characteristics of both mass and spring loads.
Estimated parameter values showed high accuracy, within 4% of specified values.
This demonstrates the feasibility of identifying environmental loads via interface sensing.

Conclusions:

The developed concept provides an accurate and reliable method for identifying environmental loads during human interaction.
This approach has significant implications for fields requiring precise human-body-load interaction analysis.
Further research can explore more complex load dynamics and interaction scenarios.