![Figure 3.](/ServeContent?url=http%3A%2F%2Fdbm.sagepub.com%2Fcontent%2F4%2F1758736013499770%2FF3.medium.gif)
Figure 3.
The position of force-acting lines to achieve a pure translation on the model (for further details, refer to the text).
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The position of force-acting lines to achieve a pure translation on the model (for further details, refer to the text).