Simulation of Hardwood Log Sawing

Preface Abstract Mathematical modeling computer programs for several hardwood sawing systems have been developed and are described. One has judgment capabilities. Several of the subroutines are common to all of the models. These models are the basis for further research which examines the question of best-grade sawing method in terms of lumber value yield. This Research Paper is one in a series of three which describe the computer simulation of hardwood log sawing. Mathematically modeled logs with a selection of diameters, core defect diameters. and knot patterns were sawn by four sawing methods. and the resultant values were recorded. This first paper, USDA Forest Service Research Paper FPL 355, " Simulation of hardwood log sawing, " describes the sawing methods, and the background and development of these programs. The second paper, FPL 356, " Lumber values from computerized simulation of hardwood log sawing. " presents the results of the sawing in terms of volume yield and lumber value, and compares them for the four sawing methods. The third paper, FPL 357, " Programs for computer simulation of hardwood log sawing, " lists the programs, model assumptions, and program organization and variables.