Graduate Project
 

Development of a cable logging system analysis package for micro-computers

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https://ir.library.oregonstate.edu/concern/graduate_projects/4q77fw80t

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  • A computer program package to estimate cable yarding payload capability was made. The package was intended to expand applicability of existing packages and to be user friendly. It has six system options: live skyline, standing skyline, running skyline, slackline, multispan and highlead. In the standing skyline and multispan analyses, load path analysis, as well as payload anaiysis, is available as an optional basis. Each program for the analysis of a system was built to include subroutines to consider its mechanical characteristics, which are usually ignored in existing packages. The running skyline program has an option to consider the maximum torque on the haulback drum. The highlead analysis program has an option to consider the effect of cable drag. The inultispan has a subroutine to check carriage passage over a support jack and an option to consider the effect of jack friction. In addition, the effect of log drag and log shape as well as choking strategy can be considered as an optional basis. The paper was written to present the mathematical formulations and modeling procedures used in building the package. In addition, outputs of an example run for each system are presented with interpretations.
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