Numerical-experimental analysis of a sieve holes' shape and arrangement effect on the degree of grain damage at the assumed sieving efficiency

POLONEZ BIS 2

Funding Organization: National Science Centre

Project title: Numerical-experimental analysis of a sieve holes' shape and arrangement effect on the degree of grain damage at the assumed sieving efficiency

Agreement number: UMO-2022/45/P/ST8/02312

Project implementation period: 01.03.2023 - 28.02.2025

Principal Investigator: dr hab. inż. Serhii Kharchenko

Project value: 846 768,00 PLN

Funds granted for Lublin University of Technology: 846 768,00 PLN

Abstract: The aim of the project research is to provide a new scientific contribution to the methodology of influence of shapes and arrangements of holes in flat, perforated plates, used as sieves on the form and extent of damage in biological material, during automated sifting processes.
The reason for considering the topic is, on the one hand, the absence of patterns of change in the degree of damage of biological materials depending on the constructive and kinematic parameters of perforated sieves, and on the other hand, the high technological efficiency of sifting through the holes of a complex geometric shape. An additional problem in optimizing the parameters of such processes is their multicriteria, namely: technological productivity and quality of separation of biologic material components through the sieves holes, the degree of material damage, the reliability of perforated sieves, the energy- and metal consumption of the structure. Planned research included in the project, will be used analytical derivation of data reduction schemes for the considered stress concentration test configurations, appropriate finite element modeling of a perforated surface with holes of complex geometric shape, and experimental verification of analytical and numerical results in bench tests.
The task of the study will be to identify the impact of the hole design on the general mechanical and strength properties of perforated surfaces, as well as on damage to biological material. The use of the obtained methodology will allow to study and apply an exclusive simulation modeling (FE-modeling), which is much cheaper than time consuming experimental tests. Bench tests will be conducted on two sets of perforated surfaces with basic holes and with highly productive geometrical activators: epicycloid-shaped holes and volumetric elements. To determine the durability, vibration and typical loads will be applied to the samples.