Drop Weight Testing Rig Analysis and Design
Crashworthiness studies are becoming increasingly important in mechanical design, particularly with the new advancement of the computer simulation codes. These studies generally require material and prototype testing for both modelling and validation. Large percentages of these studies lie on the...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
2004
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3660/ http://psasir.upm.edu.my/id/eprint/3660/1/Drop_Weight_Testing_Rig_Analysis_and_Design.pdf |
| Summary: | Crashworthiness studies are becoming increasingly important in mechanical design,
particularly with the new advancement of the computer simulation codes. These studies
generally require material and prototype testing for both modelling and validation. Large
percentages of these studies lie on the limits of medium strain rate, which could be
achieved by a drop weight test rig. Therefore, the drop weight test rig becomes an
essential tool for such research activities besides the universal quasi-static testing machines.
This paper is devoted to the analysis and design of the drop weight impact-testing rig.
First, the different aspects of the mechanical design such as the propulsion, guidance,
and frame layout, foundation and energy aspects are presented and discussed. Then, the
basic types of data retrieval and analysis systems applicable for drop weight impact testing
machines are presented and discussed. Data retrieval components considered in this
study include the sensors for load, acceleration, and velocity measurements, image
acquisition including high-speed cameras and PC-based image acquisition system, and
data acquisition including oscilloscope or PC-based data acquisition system which utilizes
an AID card and application software for visualizing and analyzing of the results. At the
end of this article the designed and constructed test machine is presented as a case study. |
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