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This work represents the design and performance optimization of pumping aggregate for hydraulic active car
suspension systems. For solving of this task is required wide scope of interdisciplinary knowledge. The software used in
this project was SolidWorks from Dassault Systemes. Using this tool is possible to analyse and optimize the flow of
hydraulic fluid throw the electromotor of pumping aggregate. This papers shows among other, how to set the input
parameters and constraints such as pressure and velocity, how to simulate a rotating flow of cooling fluid inside
intermediate regions between stator and rotor. For approving a required lifetime of pumping aggregate a fatigue analysis
was done and represented above. The verification of simulation model and mandatory validation of simulation results
are made. The conclusions at the end of this work have confirmed the usage of computational fluid dynamic – software
for future researches of pumping aggregates.
Forest owner associations act as middlemen in the cooperative marketing of timber: they are supplied with small and fluctuating quantities of timber and sell bundled amounts to industrial consumers. Knowledge of the future quantity of monthly dis-tributable timber is of particular importance for planning, but remains a subject of uncertainty. This work presents models to predict wood supply based on a simple database. Models were tested in two case-study regions, which substantially differ
Seite 88 J. List, P. Schwarzbauer, M. Braun, A. Werner, G. Langthaler, T. Sternin framework conditions for timber marketing. In each of the regions in Styria and Burgenland, different model types and subtypes were superior. It was concluded that models which determine timber supply in one forest association, are only restrictedly suitable to predict timber supply in another one.