A Systemic Approach to Consider Complexity in Sawmill Modeling
Keywords:
Systemic approach, sawmill operation, diagnostic, integrationAbstract
The lumber industry is challenged to operate more efficiently. Sawmill systems use much equipment with various technologies and their management methods are very much influenced by size of operation, employee skills, hierarchy levels, and the high volatility of softwood lumber commodity markets. Because of interactions between the different manufacturing system components, its management becomes a complex matter. It is therefore difficult to assess the effect of given perturbations or improvements on the overall system.
This study proposes a modeling approach based on the concept of system that provides a comprehensive view for modeling and analyzing sawmill systems. Adaptations of existing formalisms to represent operating, information, and decision sub-systems are put forward, while assembling these three sub-systems in an overall model gives a new vision of the sawmill and a powerful tool for systems integration. This modeling approach could be used for diagnostic as well as for sawmill improvement. Various examples are provided on the application of this approach.
References
Adams, E. L. 1984. DESIM: A system for designing and simulating hardwood sawmill systems. General Tech. Rep. NE-89. USDA Forest Service, Northeastern Forest Exp. Sta., Princeton, WV. 10 pp.nBaudin, M. 1990. Manufacturing systems analysis. Yourdon Press, YP Computing Series, Englewood Cliffs, NJ. 360 pp.nBeauregard, R., M. Beaudoin, D. Ait-Kadi, and J. P. Mongeau. 1993. A systemic approach for sawmill modeling: A case study. Working paper. Département des sciences du bois, Université Laval, Québec, Canada Nov. 1993. 41 pp.nCarino, H. F., and J. L. Bowyer. 1981. Sawmill analysis using queuing theory combined with a direct search optimizing algorithm. Forest Prod. J. 31(6): 31-40.nGane, C., and T. Sarson. 1979. Structured system analysis: Tools and techniques. Improved System Technologies, New York, NY. 373 pp.nHallock, H., and D. W. Lewis. 1971. Increasing softwood dimension yield from small logs— Best opening face. Research Paper FPL 166, USDA Forest Service, Forest Prod. Lab., Madison, WI. 12 pp.nHolemo, F. J. 1971. Inventory management —the tool and the need—in lumber production. Forest Prod. J. 21(1): 12-16.nLe Moigne, J. L. 1990. La modelisation des systèmes complexes. Ed. Bordas, Coll. AFCET-Systèmes, Paris, France. 180 pp.nManess, T. C., and D. M. Adams. 1991. The combined optimization of log bucking and sawing strategies. Wood Fiber Sci. 23(2): 296-314.nMantha, R. W., A. Martel, and D. Pascot. 1988. Concepts and modeling formalisms for the development of computer integrated organizational systems (CIOS). Working paper. SystemOID Inc., Operations and Decisions Systems Department Faculty of Administrative Sciences, Université Laval, Québec, Canada. 97 pp.nMongeau, J. P., and M. Grondin. 1992. Sawmill simulation, a new approach using OOP, in Proceedings of Division 5 Conference on Forest Products, IUFRO, August 1992, Nancy, France. 2: 598.nSalvendy, G. 1982. Handbook of industrial engineering. J. Wiley and Sons, Purdue University, Lafayette, IN.nTochigi, T., R. Amemiya, C. Tadokoro, and H. Hashimoto. 1988. Improving production systems of timber—Processing plants I. Development of the computer-simulation procedure to design the production line. Mokuzad, Gakkaishi 34(4): 314-319.nWagner, F. G. 1982. Simulation modeling—A useful tool for sawmill decision making. Ph.D. thesis, Mississippi State University, Forest Resources, Wood Science, and Technology, Mississippi State, MS. 91 pp.nZeng, Y., and J. W. Funck. 1990. SAW3D: A computer optimization program for log breakdown. Technical Forum Presentation at Annual Meeting of Forest Products Research Society, Salt Lake City, Utah, June 26, 1990. 8 pp.n
Downloads
Published
Issue
Section
License
The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:
1. All proprietary rights other than copyright, such as patent rights.
2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.
3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.