Simulation is considered to be a method to improve planning and control efficiency in the field of logistics. In our view no existing simulation tool meets the basic requirements sufficiently. We therefore developed a new simulator with the following characteristics: • Simulation principles: General purpose discrete event simulator. • Modeling basis: Meta model comprising few specific basic ele...

Material flow problems are complex logistic optimization problems. We want to utilize the available logistic network in such a way that the load is minimized or the throughput is maximized. This lecture deals with these optimization problems from the viewpoint of network flow theory and reports on two industrial applications: (1) contolling material flow with automated guided vehicles in a cont...

Beef cattle feedlots contain unconsolidated surface material that accumulates within feedlot pens during a feeding cycle. Runoff from feedlot surfaces is diverted into settling basins. The storage capacity of the settling basins will be substantially reduced if large quantities of solid material are transported in runoff from the feedlot surfaces. The objective of this study was to identify the...

the aim of this article is study of tool plunge depth (tpd) effects on mechanical properties of friction stir welding of aa1100 aluminium alloy to a441 aisi steel. for this purpose the 0.1, 0.2, 0.4, and 0.6 mm tpd selected and other welding parameters kept constant. the results shows that the frictional heat increases and stir zone grain size decreases with increasing tpd at both base metals. ...

Purpose of this paper This paper studies how companies can select a supply chain planning mechanism to improve the balance between material flow and information flow. Design/methodology/approach The methodology of the paper is an inductive case study approach. Coordination theory is used as a background for the paper. Based on a literature survey, determinants of the selection of a supply chain...

according to the former researcher’s presented relations for flow through rock-fill porous media, the effects of physical characteristics was not studied separately. hence, due to the application of these relations, physical characteristics of porous materials effect must be investigated separately. in various constructed physical models of porous media, the effect of several variables such as ...

We develop a procedure for the design of distributed layouts in a multiple period setting, where product demand and product mix may vary from period to period. We allow for multiple copies of the same department type to be placed in non-adjoining locations and for flow allocation among department duplicates to be made based on the demand for each period. We also allow for the possibility of a r...

In the paper, the performance of production networks by autonomous logistic processes and control versus those with conventional material planning under a dynamic business environment is investigated. Regarding this, by developing a discrete-event simulation model of an exemplary production network the competency of application of autonomous processes (in bearing flexibility) is presented. A ne...

Manufacturing companies are facing the challenge to cope with individualized process chains in spite of high market dynamics. In order to achieve high process efficiency by realizing logistic targets, two main leverages can be identified: adjustment of production structure and configuration of production control. The production structure represents the layout and arrangement of machines, the or...

The microstructure and residual stresses of an AA6040 Al to AZ31B Mg friction stir weld are studied using scanning electron microscopy and X-ray diffraction. The complex material flow promoted by the friction stir welding process results in a fine grained structure in the stir zone of both materials due to dynamic/recovery recrystallization. The interface between the materials is characterized ...