Wyniki wyszukiwania - BazTech

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Towards an Optimal Motor Mounting Bracket Using Topology Optimization Combined with Sustainability and Manufacturing Cost Analysis

Fassi Hicham Fihri, Aniyou Hadji

Management and Production Engineering Review

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2023

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Vol. 14, No. 4

109--116

EN

The engine is the most important component of a vehicle. It attaches to the main frame via the engine mounting bracket which supports weight and operating loads. The engine mount therefore plays a crucial role in the durability and comfort of the vehicle. This article contributes to the search for the most optimal model from the point of view of resistance, environmental impact, and manufacturing cost. This involves, on the one hand, optimizing the support by reducing its initial mass by 30%, and on the other hand, seeking suitable material and manufacturing process with the least environmental impact. To this end, topology optimization will be combined with an environmental assessment and a manufacturing cost analysis. Four materials will be tested and evaluated. Finally, a cost analysis will present a comparison between a conventional process and 3D printing.

2

FEM Simulation of Different Engine Mount Models in an Aircraft Piston Diesel Engine

Magryta Paweł, Pietrykowski Konrad, Borowiec Piotr

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 5

230--241

EN

The article presents the results of numerical simulations using the FEM (Finite Element Method) of the engine mount strength for mounting an aircraft diesel engine with opposite pistons called PZL-100. Four versions of the mount prepared by aircraft engine producer WSK "PZL-Kalisz" company were analyzed. Tests were performed in Catia v5 software in the Generative Structure Analysis module. The boundary conditions were engine gravity force, propeller thrust force, and propeller torque. S235JR steel was defined as the material. A design grid with tetrahedral elements with a single element size of 2 mm was used. As part of the simulation study, four structural solutions for the test engine mounts were calculated in terms of strength. The results of stress maps and the magnitude of deformation of the mount elements were compared. Based on the obtained results, one of the mount versions was recommended for actual fabrication.

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Automotive vehicle engine mount based on an MR squeeze-mode damper: modeling and simulation

Sapiński B., Snamina J.

Journal of Theoretical and Applied Mechanics

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2017

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Vol. 55 nr 1

377--388

EN

The study investigates the performance of a semi-active vehicle engine mount incorporating an MR damper working in the squeeze mode (MRSQD), summarising its design, operating principles and key characteristics. The mathematical model of the mount is formulated based on the newly developed MRSQD. Two control algorithms are proposed for MRSQD control. The first algorithm (ALG1) uses the inverse model of the engine-frame system, the other is the sliding mode algorithm (ALG2). The effectiveness of the engine mount system is demonstrated in computer simulation.

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Physical model of vehicle engine mount with magnetorheological damper

Snamina J., Sapiński B.

Mechanics and Control

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2016

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Vol. 35, no. 1

6--11

EN

A physical model of a vehicle engine mount incorporating a magnetorheological (MR) damper in squeeze mode is investigated and the structural design and operating characteristics of the MR damper are provided. The mathematical model of an engine mount is formulated. Kinematic excitations are assumed to be those emulating road profile-chassis (car body) interactions. Simulations of engine vibration are performed to determine the efficiency of the proposed engine mount. Conclusions are drawn concerning the potential applications of the MR damper in vehicle engine mounts.

PL

W pracy opisano budowę modelu fizycznego zawieszenia silnika samochodowego, w którym zastosowano tłumik z cieczą magnetoreologiczną (MR) działającą w trybie ściskania. Sformułowano model matematyczny zawieszenia. Zakładając wymuszenie kinematyczne modelujące oddziaływanie nierówności drogi na karoserią, przeprowadzono symulacje komputerowe drgań silnika. Oceniono efektywność działania zawieszenia oraz sformułowano wnioski dotyczące możliwości zastosowania tłumika MR w zawieszeniu silnika samochodowego.

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Stanowisko laboratoryjne do badań zawieszenia silnika samochodowego z tłumikiem MR

Snamina J., Sapiński B.

Modelowanie Inżynierskie

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2015

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T. 23, nr 54

65--71

PL

W pracy zawarto opis stanowiska do badań semiaktywnego zawieszenia silnika samochodowego, w którym zastosowano tłumik MR. Przedstawiono założenia projektowe oraz wyszczególniono elementy mechaniczne konstrukcji stanowiska, budowę układu redukcji drgań oraz tor pomiarowy. Zamieszczono wyniki symulacji drgań silnika spalinowego umieszczonego na stanowisku z przewidzianym przez producenta pasywnym układem redukcji drgań oraz z zaproponowanym semiaktywnym układem redukcji drgań z tłumikiem MR. Porównując wyniki obliczeń w obu przypadkach, przeprowadzono weryfikację założeń dotyczących konstrukcji układu redukcji drgań.

EN

The facility is purpose-built for testing semi-active engine mounts complete with an MR damper. The design objectives for the adopted mechanical structure are summarized and components of vibration reduction system as well as measurement equipment are described. Simulation experiments were performed to test the engine vibrations when placed in the facility and provided with the typical standard passive vibration reduction system and with the proposed new semi-active vibration reduction system incorporating an MR damper. Calculation data are compared and the design objectives are verified.

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Analiza wytrzymałościowa wibroizolatora z cieczą MR działającą w trybie ściskania

Snamina J., Sapiński B.

Modelowanie Inżynierskie

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2014

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T. 20, nr 51

87--93

PL

W pracy oszacowano maksymalne siły wibroizolatora z cieczą magnetoreologiczną (WI-MR) występujące podczas jego ściskania w układzie zawieszenia silnika samochodowego. Na podstawie analizy budowy i działania WIMR, wyznaczono analitycznie oraz numerycznie (MES) stan naprężeń i przemieszczeń dla wybranej (najbardziej wytężonej) części. Wyniki obliczeń wykorzystano do określenia docelowych wymiarów WI-MR. W celu zapewnienia symetrii charakterystyki siły w zawieszeniu zaproponowano wykorzystanie dwóch WI-MR pracujących w układzie przeciwbieżnym.

EN

This study discusses estimation of maximal forces occurring in a magnetorheological damper in squeeze mode (WI-MR), when operated as an actuator in a suspension system for a combustion engine. On the base of the structure and the principle of the damper, stress and strain analysis was carried out analytically and numerically (FEM) for the selected (most effort) part of the WI-MR. The obtained results were utilised to determine the final WI-MR dimensions. In order to ensure the appropriate symmetry of characteristics it was proposed the special connection of two WI-MRs in the suspension system.