STOCHASTIC MODELS TO ESTIMATE THE PRODUCTION OF MATERIAL HANDLING SYSTEMS IN THE CONSTRUCTION INDUSTRY

MATERIAL HANDLING IN AN INDUSTRIAL OR CONSTRUCTION SITUATION CAN OFTEN BE DESCRIBED BY A KIND OF LINK-NODE MODEL. THE MATERIALS OR GOODS ARE TRANSPORTED ALONG A SERIES OF LINKS LOCATED END TO END, AND TRANSFER FROM LINK TO LINK OCCURS AT NODES. LINKS MAY CONSIST OF ONE OR MORE CARRIERS, EACH TRANSPORTING A DISCREET QUANITY, OR THEY MAY BE ABLE TO CARRY A CONTINUOUS FLOW LIKE A CONVEYER BELT. A DETERMINISTIC MODEL WAS DESCRIBED WHICH IS CAPABLE OF CALCULATING THE CAPACITY OF MATERIAL HANDLING SYSTEMS. A SERIES OF STOCHASTIC MODELS WERE PRESENTED. THESE MODELS WERE DEVELOPED FROM A VERY SIMPLE CASE (TWO LINKS AND ONLY ONE CARRIER IN ONE OF THE LENGTHS TO MORE COMPLEX CASES), TWO-LENGTHS SYSTEMS WITH MORE THAN ONE CARRIER IN BOTH LENGTHS (MULTI-SERVER), AND FINALLY A TREATMENT FOR MULTI-LENGTH SYSTEMS. PRODUCTION CURVES ARE DEVELOPED USING THE QUEUEING MODEL, THE SIMUALTION MODEL, AND THE DETERMINISTIC MODEL. THE QUEUEING MODELS RELY ON THE ASSUMPTION OF A POISSON PROCESS AND THE SIMULATION MODEL USES FORTRAN IV. A SUMMARY OF THE MODELS DEMONSTRATE THAT AN ACCURATE CONSIDERATION OF A SYSTEM'S DEPENDENCE IS ESSENTIAL FOR AN ACCURATE ESTIMATE OF THE SYSTEM'S PERFORMANCE. THE SIMULATION MODELS FORM A TOOL FOR CONDUCTING EXPERIMENTS, AS WELL AS FOR SOLVING SYSTEMS UNSOLVABLE BY DETERMINISTIC OR INTUITIVE APPROACHES.

  • Supplemental Notes:
    • Tr No 111, 248 PP, 36 FIG
  • Corporate Authors:

    Stanford University

    Stanford, CA  United States  94305
  • Authors:
    • Gaarslev, A
  • Publication Date: 1969-8

Subject/Index Terms

Filing Info

  • Accession Number: 00215279
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 27 1970 12:00AM