AN ANALYSIS OF TWO-LINK MATERIAL HANDLING SYSTEMS WITH ONE CARRIER IN ONE OF THE LINKS

A COMMON MATERIAL HANDLING SYSTEM IN THE CONSTRUCTION INDUSTRY CONSISTS OF 2 LINKS OF INTERACTING EQUIPMENT WHERE ONE OF THE LINKS HAS ONLY ONE UNIT OF EQUIPMENT AND THE OTHER HAS TYPICALLY MORE THAN ONE. FOUR MATHEMATICAL APPROACHES ARE DESCRIBED TO CALCULATE THE PRODUCTION RATE OF SYSTEMS. TWO OF THESE METHODS ASSUME THAT CYCLE TIMES ARE CONSTANT AND TWO ASSUME THAT THEY ARE RANDOM VARIABLES. ALL METHODS ASSUME THAT THE CONTRACTOR HAS KNOWLEDGE OF THE NON-DELAY CYCLE TIMES AND THE EFFICIENCY OF THE EQUIPMENT IN BOTH LINKS. ALL MODELS ARE COMPARED TO THE RESULTS OF A COMPUTER SIMULATION MODEL WHICH IS ACCEPTED AS THE BEST AVAILABLE METHOD OF PREDICTING THE PRODUCTION RATE OF THE SYSTEMS UNDER ANALYSIS. THE MODEL WHICH COMES CLOSEST TO THE SIMULATION RESULTS IS A QUEUING OR WAITING LINE TYPE. THE EFFECT IS ALSO INVESTIGATED OF ADDING A SOURCE OF TEMPORARY STORAGE AT THE POINT OF TRANSFER BETWEEN THE TWO LINKS. CURVES ARE PRESENTED WHICH ENABLE THE CONTRACTOR TO ESTIMATE THE EFFECT OF ADDING A GIVEN SIZE HOPPER TO A DIRECT-TRANSFER SYSTEM.

  • Supplemental Notes:
    • Tr No 29, INTERIM RPT, 66 PP, 23 FIG, 2 TAB, 4 APP
  • Corporate Authors:

    Stanford University

    Department of Civil Engineering
    Stanford, CA  United States  94305
  • Authors:
    • Teicholz, P
  • Publication Date: 1963-8

Subject/Index Terms

Filing Info

  • Accession Number: 00215267
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 27 1970 12:00AM