Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation
This paper is concerned with the influence of vibration isolators in the form of post-buckled elastic clamped-clamped one and pair strut to relief the vibrating machines from the harmful effects of vibration. These vibrations are in most cases uncontrollable and lead to sudden failure, therefore, me...
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| Format: | Article |
| Language: | English |
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Port Said University
2012-09-01
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| Series: | Port Said Engineering Research Journal |
| Online Access: | https://pserj.journals.ekb.eg/article_114379_73bd536a005e1c77db82b317084d7aeb.pdf |
| _version_ | 1827787080109916160 |
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| author | Ali Elkafrawy Anwar Kandil Moustafa Helaly Abu-Bakr Omar |
| author_facet | Ali Elkafrawy Anwar Kandil Moustafa Helaly Abu-Bakr Omar |
| author_sort | Ali Elkafrawy |
| collection | DOAJ |
| description | This paper is concerned with the influence of vibration isolators in the form of post-buckled elastic clamped-clamped one and pair strut to relief the vibrating machines from the harmful effects of vibration. These vibrations are in most cases uncontrollable and lead to sudden failure, therefore, mechanical engineers in preventive maintenance sections have to control, isolate, and minimize the harmful effects of such unwanted vibrations. A mathematical model consists of pre-bent post-buckled one and pair strut acting as vibration isolators supporting an asymmetric rigid plate. The model is subject to axial harmonic excitation at the base, and allowed to displace laterally with respect to axial center line of the isolated plate. The displacement transmissibility is calculated over a wide range of frequencies and plotted in form of design charts. The transmissibility plots are used to recognize the ranges of frequencies, at which isolation can be maintained. The resonance frequencies of the system can be easily depicted from the design graphs. The present study reveals that at resonance frequencies the most effective transmissibility is well below unity. Vibration characteristics are determined under specific frequencies such that the physical behavior of the system can be thoroughly analyzed. All variables used in the analysis are normalized, such that the results aren‟t dependent on any material or geometric property. In this way, the obtained results can be applied over a wide range of elastic materials, regardless of the type of material or section properties. |
| first_indexed | 2024-03-11T16:43:28Z |
| format | Article |
| id | doaj.art-94a4b13935df4a70beb23f810f801822 |
| institution | Directory Open Access Journal |
| issn | 1110-6603 2536-9377 |
| language | English |
| last_indexed | 2024-03-11T16:43:28Z |
| publishDate | 2012-09-01 |
| publisher | Port Said University |
| record_format | Article |
| series | Port Said Engineering Research Journal |
| spelling | doaj.art-94a4b13935df4a70beb23f810f8018222023-10-23T06:14:10ZengPort Said UniversityPort Said Engineering Research Journal1110-66032536-93772012-09-01162132810.21608/pserj.2012.114379114379Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial ExcitationAli Elkafrawy0Anwar Kandil1Moustafa Helaly2Abu-Bakr Omar3Port-Said University Department of Production EngineeringProfessor, Production Engineering and Mechanical Design Department, Faculty of Engineering, Port Said University, Port Said, EgyptAlexandria University Department of Production Engineering Faculty of EngineeringTeacher, Mechanical Department, Faculty of Engineering, Suez Canal University, Ismailia, EgyptThis paper is concerned with the influence of vibration isolators in the form of post-buckled elastic clamped-clamped one and pair strut to relief the vibrating machines from the harmful effects of vibration. These vibrations are in most cases uncontrollable and lead to sudden failure, therefore, mechanical engineers in preventive maintenance sections have to control, isolate, and minimize the harmful effects of such unwanted vibrations. A mathematical model consists of pre-bent post-buckled one and pair strut acting as vibration isolators supporting an asymmetric rigid plate. The model is subject to axial harmonic excitation at the base, and allowed to displace laterally with respect to axial center line of the isolated plate. The displacement transmissibility is calculated over a wide range of frequencies and plotted in form of design charts. The transmissibility plots are used to recognize the ranges of frequencies, at which isolation can be maintained. The resonance frequencies of the system can be easily depicted from the design graphs. The present study reveals that at resonance frequencies the most effective transmissibility is well below unity. Vibration characteristics are determined under specific frequencies such that the physical behavior of the system can be thoroughly analyzed. All variables used in the analysis are normalized, such that the results aren‟t dependent on any material or geometric property. In this way, the obtained results can be applied over a wide range of elastic materials, regardless of the type of material or section properties.https://pserj.journals.ekb.eg/article_114379_73bd536a005e1c77db82b317084d7aeb.pdf |
| spellingShingle | Ali Elkafrawy Anwar Kandil Moustafa Helaly Abu-Bakr Omar Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation Port Said Engineering Research Journal |
| title | Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation |
| title_full | Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation |
| title_fullStr | Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation |
| title_full_unstemmed | Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation |
| title_short | Vibration Isolation of Asymmetric Rigid Plate Using One and Pair Pre-bent Strut at Each Corner under Static and Dynamic Axial Excitation |
| title_sort | vibration isolation of asymmetric rigid plate using one and pair pre bent strut at each corner under static and dynamic axial excitation |
| url | https://pserj.journals.ekb.eg/article_114379_73bd536a005e1c77db82b317084d7aeb.pdf |
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