Stanislau Dounar

Stanislau Dounar

Doctor of Mechanical Engineering (PhD).
FEA of special LBS. Structural analysis in the machinery. Biomimetic simulations. Legacy load-bearing systems.

About

17
Publications
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22
Citations

Publications

Publications (17)
Article
Full-text available
Concept of machine tool’s column in the appearance of vertical bionic console is proposed. Console was 3D-transformed from the shape of legacy oak-like structure – Eddystone lighthouse. It is proposed to create the variable-section column with “layer-by-layer” technics from the polymer concrete. FEA shows high stiffness of the column. It increases...
Article
Full-text available
FEM simulation of Eddystone lighthouse is provided. Incorporated bionic tower is modelled as well. Load cases including gravity force, wind thrust, water stream and 50-year wave impulse are accomplished. Stress concentrator system is described. Effect of tension stress concentrator compensation caused by gravity is showed. Low gradient stress dispe...
Presentation
Full-text available
This presentation is an addition to the article Dounar S.S., Ausiyevich A.M., Lapuka A.D., Shvedova D.N., Rodenia A.V. FEA stress analysis of the Tower of Pisa as a way for students to explore the sphere of virtual testing. «System analysis and applied information science». 2022;(2):67-75. (In Russ.) (https://doi.org/10.21122/2309-4923-2022-2-67-75...
Preprint
Full-text available
Static FEA of a load-bearing system for well-known Asinelli tower is provided. Three-layer model “outer brick – filling – inner brick” is used for historic tower walls. So outer and inner brick shells are modelled. Composite structure is simulated by means of vertical and horizontal contact pairs in bonded statuses. Gravity force, leaning of tower...
Preprint
Full-text available
FEM simulation of Eddystone lighthouse is provided. That construction is a case of legacy load-bearing system (LLBS). Incorporated tree-like granite tower is modelled as well as cylindrical basis above rock. Load cases including gravity force, wind thrust, water stream and 50-year wave impulse are investigated. Static, modal and transient FEA are a...
Preprint
Full-text available
FEA of a load-bearing system for well-known Asinelli’s tower is provided. Three-layer model “outer brick – filling – inner brick” is developed for historic tower walls. Frictional contact pair is created between the tower itself and the basement. Static simulation of gravity and hurricane loading is fulfilled. Stress state harmonization between out...
Article
Full-text available
The paper describes a method for condition monitoring of a complex mechanical system based on pre-computer FEM simulation of vibrations. The interrelation of vibrations of the connected elements of the system, described by transfer functions, is shown. The occurrence of resonant vibrations in directions orthogonal to the direction of the disturbing...
Article
Full-text available
FEA of stress state for Pisa Tower is accomplished. Imaginary vertical orientation of the tower is simulated as well as its actual leaning position too. Moderate deformational incompatibility between “column drum” and “stem” load-bearing systems is revealed. Twofold overstressing of lower colonnade is found comparatively to the stem surface. Tower’...
Article
Full-text available
Centrifuge is a good knew type of machines for liquid separation. Given work touches the compact, high-speed biological centrifugal machine, designed before FEA epoch, but permanently produced and exploited till now. So some kind of FEA-audit of old, intuitive design is provided here. FEA-simulation was based on the experience gained at rotating te...
Chapter
Full-text available
Paper concerns to contact simulation by the finite element method for "freely piled solids" systems. The antique facade of the Parthenon temple is taken for simulation as an example. Marble drums and blocks are held together only by gravity and friction. Multiplicity of contact pressure patterns inside columns are disclosed. Surface compression con...
Book
Full-text available
Dear Readers, This is the second 2021 issue of our journal (No. 66). We are slowly seeing the world normalize after the COVID-19 pandemic, and we look forward to a complete return to our usual routines and to meeting again at conferences, seminars and research internships. Let us all hope that this will come true soon. Research results and author o...
Book
Full-text available
Dear Readers, We are pleased to present this year’s first issue (No. 65) of the Scientific Journals of the Maritime University of Szczecin. This year will bring many new challenges, also for the journal, where we continually focus on improved quality. We would like to thank the authors, reviewers and readers for their contribution to our journal. I...
Article
Full-text available
Research of breakage of the chestnut tree branch on the planting of university campus is provided. Collapse is caused by a severe accidental wind gust. Due to collapse in the student environment, the investigation has additional methodical value for the teaching of FEA simulation. The model includes roots, trunk, branch, and conditional crown, wher...
Article
Full-text available
Original experimental technical equipment for making samples in the form of permeable tubes of porous material, i.e. coiled wire. The article describes the construction of the equipment, the processes of forming and pressing the wire semi-product and methods of fixing the ends of the wire product.
Article
Full-text available
Load bearing system simulation is provided for a huge lathe to be renovated. Static and modal analyses are done by FEM. Focus was centerline rising, needed for larger rotor shaft machining. Forces between shaft and three supports were applied. Shaft static stiffness is lowered at 1.15 times only for 600 mm centerline rising. Supports have lost its...
Article
Full-text available
Dynamics of huge renovated lathe is simulated. Turning scheme concerns to heavy rotor shaft finishing. Lofty parts and milling head may create dynamic problems. Static, modal and harmonic frequency response function simulations were provided. Bearing system consists of bed, support, tool, lunettes, tailstock. Headstock didn’t take part in shaft hol...
Article
Full-text available
Virtual testing of portal machine tool has been carried out with the help of finite elements method (FEM). Static, modal and harmonic analyses have been made for a heavy planer. The paper reveals influence of concrete filler on machine tool dynamic flexibility. A peculiar feature of the simulation is concrete filling of a high-level transverse beam...

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