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Journal articles on the topic 'Drum'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 June 2025

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1

Johnson, Henry. "Chinese toms in the making of the drum kit: Localization and exoticism." Journal of Popular Music Education 5, no. 2 (2021): 227–42. http://dx.doi.org/10.1386/jpme_00059_1.

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The late nineteenth century and early decades of the twentieth century saw the drum kit emerge as an assemblage of musical instruments that was central to much new music of the time and especially to the rise of jazz. This article is a study of Chinese drums in the making of the drum kit. The notions of localization and exoticism are applied as conceptual tools for interpreting the place of Chinese drums in the early drum kit. Why were distinctly Chinese drums used in the early drum kit? How did the Chinese drums shape the future of the drum kit? The drum kit has been at the heart of most popular music throughout the twentieth century to the present day, and, as such, this article will be beneficial to educators, practitioners and scholars of popular music education.

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2

Widhate, P., H. P. Zhu, Q. H. Zeng, and K. J. Dong. "Particle velocity profile in an inclined rotating drum." EPJ Web of Conferences 249 (2021): 14001. http://dx.doi.org/10.1051/epjconf/202124914001.

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Various experimental and numerical studies have been carried out to study the velocity profiles of the particles inside horizontal rotating drums, but little emphasis has been laid on inclined rotating drums, though these drums are extensively used in granular process industries. In this study, velocity profiles of the particles in a rotating drum with 0o, 5o, 10o, and 15o inclinations have been studied by using the discrete element method. It was found that at the locations of the drum with the volumetric fill in the range of 0.2 0.8, the inclined rotating drum has a similar variation of velocity with the radial height to the horizontal rotating drum. However, the variation of the average particle velocity along the length of the drum differs for horizontal and inclined drums. Furthermore, for the inclined rotating drum, the average velocity increases with the increase in the volumetric fill.

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3

Cooke, Peter, and David Locke. "Drum Damba: Talking Drum Lessons." Ethnomusicology 37, no. 1 (1993): 120. http://dx.doi.org/10.2307/852252.

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4

Agyeman, Kafui Kwesi, Harold Awuley Quaye, Frederick Ampah Clement, and Theophilus Agyekum Sarpong. "Adaptation of the Local Ghanaian Caldron (“Dadesen”) for Drums Shells." International Journal of Innovative Science and Research Technology 5, no. 6 (2020): 1354–63. http://dx.doi.org/10.38124/ijisrt20jun892.

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The introduction and high patronage of foreign utensils has reduced the demand for the “dadesen” (a traditional aluminium caldron in Ghana). This is seen by this research as threat to the producers. For this reason, the researchers realise the need to diversify the use of the “dadesen” to assure the livelihood of the local artisans who make them and also to save the craft for posterity. This led to a physical analysed of the form which suggested drum shells. This led to a factor analyses of how a drum /shell can be produced from the “dadesen” and subsequently a drum. These were done in consultation with drum carvers and experts from the localities through interviews and observation. Consequently, the researchers arrived at defined means of executing “dadesen” drum shells and subsequently employed the Ghanaian traditional talking drum making process to stretch the animal skin on the metal shell. This led to the production of a pair of talking drums. These drums were thoroughly tried and the sounds were good. It is therefore concluded that the “dadesen” is a potential form for making of drums. This is highly recommended for another genre of drums.

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5

Abe, Banri. "Drum." Journal of the Acoustical Society of America 130, no. 6 (2011): 4184. http://dx.doi.org/10.1121/1.3669381.

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6

Aspland, Mark. "Drum." Journal of the Acoustical Society of America 130, no. 6 (2011): 4184. http://dx.doi.org/10.1121/1.3669382.

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7

KANAORI, Yuji. "Large Drum on the Drum Rock." Journal of the Japan Society of Engineering Geology 55, no. 3 (2014): 118–23. http://dx.doi.org/10.5110/jjseg.55.118.

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8

Britania, Rizka, Amir Tjolleng, and Salma Ardiana Putri. "Integrasi Model Inventori EOQ dan Time Series Forecasting Untuk Sistem Inventori Optimal." Jurnal Visionida 10, no. 1 (2024): 78–93. https://doi.org/10.30997/jvs.v10i1.13310.

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This research aims to evaluate the existing inventory system and determine the optimal inventory system for the future at PT XYZ. The methods used are Economic Order Quantity (EOQ) integrated with time series forecasting. The selection of products studied is based on inbound and outbound volumes in the warehouse. The application of the EOQ method to the five study products resulted in an optimal order quantity for the existing conditions of 925 drums, 737 drums, 612 drums, 705 drums, and 729 drums for products A, B, C, D, and E. There is a potential saving in total inventory costs of 24% generated by the EOQ model compared to the current inventory system in the company. Historical demand data shows a seasonal stationary pattern. Forecast for the coming year was conducted and used in calculating the optimal order quantity for the coming year, which are 775 drums, 891 drums, 611 drums, and 728 drums for products A, B, C, and E. This research can enrich the literature related to EOQ and provide input for companies regarding the potential savings that can be made, and information on inventory system needs for the future. ABSTRAK Penelitian ini bertujuan mengevaluasi sistem inventori eksisting dan menentukan sistem inventori optimal untuk masa mendatang pada PT XYZ. Metode yang digunakan adalah Economic Order Quantity (EOQ) yang diintegrasikan dengan time series forecasting. Pemilihan produk yang dikaji didasarkan pada volume inbound dan outbound di gudang. Penerapan metode EOQ pada lima produk kajian memberikan hasil kuantitas pemesanan optimal untuk kondisi eksisting sejumlah 925 drum, 737 drum, 612 drum, 705 drum, dan 729 drum untuk produk A, B, C, D, dan E. Terdapat potensi penghematan total ongkos inventori sebesar 24% yang dihasilkan model EOQ dibandingkan dengan sistem inventori yang saat ini berlangsung di perusahaan. Data historis demand menunjukkan adanya pola seasonal stationer. Forecast untuk satu tahun mendatang dilakukan dan digunakan dalam menghitung kuantitas order optimal untuk tahun mendatang, yaitu sebesar 775 drum, 891 drum, 611 drum, dan 728 drum untuk produk A, B, C, dan E. Penelitian ini dapat memperkaya literatur terkait EOQ, dan memberikan masukan bagi perusahaan terkait potensi penghematan yang dapat dilakukan, dan informasi kebutuhan sistem inventori untuk masa mendatang.

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Gao, Kuidong, Xiaodi Zhang, Liqing Sun, Qingliang Zeng, and Kao Jiang. "Complex Effects of Drum Hub Forms and Structural Parameters on Coal Loading Performance." Complexity 2020 (June 10, 2020): 1–19. http://dx.doi.org/10.1155/2020/7036087.

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The extremely poor loading performance of a thin coal shearer drum affects the mining efficiency in thin seam mining seriously on account of the restriction by the complicated mining environment and seam thickness. The coal loading performance of the drum is influenced by several complex factors, such as motion parameters and structural parameters, including the structure and form of the hub. The form of the drum hub is cylindrical in general, and in order to study the influence of the hub form on the coal loading rate of the drum, seven drums with different hub forms and structures were designed. The influence of the complexity of hub structures on the coal loading performance was studied by discrete element method (DEM) simulation in this paper. The change curves with the research object of different drums, such as coal loading rate, velocity field distribution, and contact force between fallen coal particles, were obtained. The results showed that the conical hub drum can improve the coal loading performance than the cylindrical hub drum, and the curve-shaped hub drum had a more obvious promotion on the coal loading performance. The coal loading rate increased first and then decreased with the increase of hub cone angle. Compared with the conical hub drum, the curve-shaped hub drum can not only improve the coal loading rate, but also has a larger space containing coal. This study has proposed a drum with a new form hub which could increase the coal loading rate, and the methods and conclusions provide the guidance for drum hub design.

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10

Tang, Zhong, Xiyao Li, Xin Liu, Hui Ren, and Biao Zhang. "Dynamic Balance Method for Grading the Chain Drive Double Threshing Drum of a Combine Harvester." Applied Sciences 10, no. 3 (2020): 1026. http://dx.doi.org/10.3390/app10031026.

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Although the individual threshing drum of a combine harvester was balanced on a dynamic balancing machine before it is assembled, there were still unbalances after multiple drums were assembled with the chain drive. In this paper, the double drums with a chain drive of a crawler combined harvester were selected as the research subject. The aim of this study was to develop a dynamic unbalance mode for grading chain drive double drums. Based on the dynamic unbalance characteristics of the main driven drum, the experimental research on the radial balance of the driven drum end face was carried out. It was known that the chain drive had a direct and obvious influence on the unbalanced phase of the drum. The unbalance of the drive load had an obvious effect on unbalanced amplitude of an active drum through the transfer characteristics of the chain drive. For the multi-stage transmission characteristics of a combine harvester, a step-by-step balanced grading chain drive double drum dynamic balancing method was practiced. Results showed that the unbalanced amplitude after balancing threshing drum I chain transmission mode of the combine harvester can be reduced by a maximum of 91%. Simultaneously, the unbalanced amplitude of threshing drum II can reduced by a maximum of 69.2%. The size and position of the wrap angle of the chain drive would directly affect the phase of the two equivalent unbalanced masses.

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11

Lou, Cenxi. "Exploring Drum Sound Quality and Dual-Tone Production Through Membrane Thickness Modifications." Theoretical and Natural Science 100, no. 1 (2025): 95–106. https://doi.org/10.54254/2753-8818/2025.21684.

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This report explores methods to enhance the sound quality of drums and the potential to generate two distinct tones from a single strike through modifications to drum head structure. The study begins with a theoretical analysis of drum sound production, focusing on the vibrational behavior of the drum head and how factors such as membrane diameter, density, and thickness influence the frequencies generated. Experiments were conducted to assess the impact of drum size, drum head thickness, pretension, and material properties on sound generation and repeatability. While none of these factors alone produced dual-tone effects, further exploration into structural modifications, specifically partial thickness changes in the drum head, revealed improvements in sound quality. Although the goal of generating two distinct tones was not achieved, the findings demonstrate that targeted modifications can enhance the purity and richness of the drums sound. Future research will focus on combining selective stiffness adjustments and varied striking positions to achieve the desired tonal outcomes.

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12

Hu, Chaobin, Qiuhua Miao, and Peng Huang. "Size-Induced Segregation Characteristics and Phase Transition Processes of Binary Particles in Non-Cylindrical Long Rotary Drums." Processes 13, no. 4 (2025): 971. https://doi.org/10.3390/pr13040971.

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In this study, the effects of drum geometric boundary conditions on size-induced segregation behaviors of binary particle systems were systematically investigated in non-cylindrical rotary drums. The results indicate that radial percolation effects and axial inclined percolation effects interact within the binary particle system in drums. In a rotary drum with a low filling rate, as the drum shape parameters change, the flow characteristics of binary particle mixtures are inconsistent, exhibiting phenomena such as the formation, reversal, splitting, merging, and replication of axial segregation bands. In contrast, with an increasing number of drum edges, rotary drums with medium filling rates gradually form axial core band characteristics with alternating intervals, while those with high filling rates gradually form axial throughout core band characteristics. Moreover, with the continuous increase in drum filling rate, the particle segregation index shows the first decrease and then increase characteristics in the final stabilization stage. Consequently, once the effects of rotary drum shape parameters and filling rate conditions are combined, the particle segregation characteristics have different phase transition processes corresponding to the different significant regions shown in the final steady segregation index phase diagrams.

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13

van der Sluijs, Marinus H. J., John D. Wanjura, Randal K. Boman, Greg A. Holt, and Mathew G. Pelletier. "Assessing the Influence of Spindle Harvester Drum Arrangement on Fiber Quality and Yield." Journal of Cotton Science 24, no. 4 (2020): 229–37. http://dx.doi.org/10.56454/lzyk5974.

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On spindle type cotton harvesters, spindles are attached to bars which are arranged on rotating drums. Opposed drum harvesting units position one drum on each side of the row, whereas harvesting units with an in-line drum arrangement position both drums on the right side of the plant row. Two studies conducted in Australia and the United States focused on comparing drum arrangements in regard to harvesting efficiency and fiber quality as there has been no recent published research using high yielding commercial varieties. These studies concluded that there were slight, but insignificant differences among opposed and in-line drum arrangements in terms of harvesting efficiency and lint turn out. Although only statistically significant for the work conducted in the US, lint ginned from seed cotton harvested by the opposed drum arrangement contained more trash than that harvested by the in-line arrangement. In both countries there were small insignificant differences in terms of fiber color (both Rd and +b), length, and micronaire, after ginning and lint cleaning. Although not observed in Australia, small significant differences in length uniformity and strength were observed in favor of the opposed drum arrangement in the US. Measured only in Australia, there were no significant differences between the two drum arrangements in terms of short fiber index, fineness, and maturity. There was also no significant difference between the two drum arrangements in terms of total, fibrous and seed-coat nep content, and size.

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14

Subbulakshmi, S. "A Study of Tsuzumi, A Japanese Instrument." Shanlax International Journal of Arts, Science and Humanities 8, no. 3 (2021): 119–23. http://dx.doi.org/10.34293/sijash.v8i3.3470.

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An analysis of Folk Drums of South India, comparing with that of Japanese Folk Drum Tsuzumi. Indian Folk Drums like Udukkai, Idakkai, Tudi, Damaru, Timilai, Deru, Thavandai have been compared with this Folk Drum of Japan.

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15

Goonatilleke, M. A. S. T., and B. Hettige. "ThamRobot: An Automated Robotic System to Play Thammattama." International Journal of Computer Applications Technology and Research 10, no. 11 (2021): 248–56. http://dx.doi.org/10.7753/ijcatr1011.1004.

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Sri Lanka has a precious traditional drum music culture that is mainly based on traditional drums. At present, this drum culture is in decline due to a lack of talented drum players. As a result, many Buddhist temples are facing a serious and tragic problem. This article presents the design and implementation of a robotic system named ThamRobot contains two robotic arms that were designed to play pre-programmed three drum tunes of the Thammattama correctly and efficiently like a drum player without any intervention of a human. In the research, nine major characteristics factors of the Thammattama such as music notes, drum locations, approximate stress, frequencies, pitch, drum type, number of sticks, playing technique, distance from stick to drum face were identified. The entire system is comprised of four main modules named motion module, user-operation module, processing module, power supply module. Finally, the system has been tested in a laboratory environment and encouraging results were obtained.

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16

Wang, Peng, Bin Li, and Song Ling Wang. "An On-Line Fatigue Life Monitoring System for Boiler Drums Based on the Inverse Problem of Heat Conduction Method." Advanced Materials Research 413 (December 2011): 361–66. http://dx.doi.org/10.4028/www.scientific.net/amr.413.361.

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A method based on solution of the inverse heat conduction problem was presented for online stress monitoring and fatigue life analysis of boiler drums. The mathematical model of the drum temperature distribution is based on the assumptions that the difference of temperature along the longitudinal axis of the boiler drum is negligible with changes only in the radial direction and the circumferential direction, and that the outer surface of drum is thermally insulated. Combining this model with the control-volume method provides temperatures at different points on a cross-section of the drum. With the temperature data, the stresses of the boiler drum are derived according to the FEM and the life expectancy of it is calculated based on the rain flow method. Applying this method to the cold start-up process of a 300 MW boiler demonstrated the absence of errors caused by the boundary condition assumptions on the inner surface of the drum and an applicable technique for the online stress monitoring and fatigue life analysis of boiler drums.

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17

Istiqoma, Riyana, Anita Amran, and Tri Budianingsih. "Wooden Drum Festival Suku Wa Di Ximeng Provinsi Yunnan." JURNAL Al-AZHAR INDONESIA SERI HUMANIORA 5, no. 2 (2019): 58. http://dx.doi.org/10.36722/sh.v5i2.344.

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<p>Abstrak <strong>-</strong> <strong><em>Wooden Drum</em> <em>Festival </em>adalah festival yang dirayakan oleh suku Wa di Yunnan, China. Festival ini dirayakan setiap tahunnya pada bulan November akhir atau Desember awal. Di antaranya ada tiga kegiatan utama yaitu Membuat dan Menarik Drum Kayu, Tarian Drum Kayu dan Sembahyang kepada Drum Kayu, serta terdapat pula kegiatan hiburan seperti perlombaan olahraga, pertunjukkan opera atau karnaval. Drum kayu adalah alat musik utama yang digunakan pada perayaan <em>Wooden Drum Festival.</em> Biasanya terbuat dari kayu merah dengan diameter 0,8 meter dan panjang sekitar 2 meter. Festival biasanya berlangsung selama tiga hari. Hingga saat ini festival ini masih terus dirayakan oleh suku Wa, karena mereka adalah suku yang sangat mematuhi ajaran agama.</strong></p><p><em>Abstract</em><strong> -</strong> <strong>Wooden Drum Festival is a festival celebrated by the Wa tribe in Yunnan, China. The festival is celebrated annually in late November or early December. Among them are three main activities, namely Making and Pulling Wooden Drums, Wooden Drum Dance and Worshiping Wooden Drums, and there are also entertainment activities such as sports competitions, opera shows or carnivals. Wooden drums are the main musical instruments used in the Wooden Drum Festival celebration. Usually made of red wood with a diameter of 0.8 meters and a length of about 2 meters. The festival usually lasts three days</strong>. <strong>Until now, the festival is still celebrated by the Wa tribe, because they are a tribe that strongly adheres to religious teachings</strong>.</p><p><strong><em>Keyword </em></strong><em>- </em><em>China, Wa Autonomous Region, Wa Tribe, Wooden Drum Festival</em></p>

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Bokor, Michael J. K. "When the Drum Speaks." Rhetorica 32, no. 2 (2014): 165–94. http://dx.doi.org/10.1525/rh.2014.32.2.165.

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This article explores the instrumentality of traditional African drums in influencing human behavior, and debunks view-points held by some critics that these drums are mere instruments for entertainment, voodoo, or rituals. It argues that as cultural artifacts, the drums are a primal symbol (a speech surrogate form qualified as drum language) used for rhetorical purposes to influence social behavior, to generate awareness, and to prompt responses for the realization of personhood and the formation of group identity. This ascription of rhetorical functionality to the African drum-dance culture provides interesting insights into the nature of rhetorical performance in the non-Western world.

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Winardi, Daniel. "PENGGUNAAN INSTRUMEN DRUM DI DALAM IBADAH: KAJIAN KATA TSLATSAL DAN TOPH DALAM MAZMUR 150." Voice of Wesley: Jurnal Ilmiah Musik dan Agama 6, no. 1 (2022): 31–43. https://doi.org/10.36972/jvow.v6i1.164.

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ABSTRACTDrums as one of instruments in a band often bring conflict in relation to its use in Sunday service. Some mainstream churches have already accepted the use of drums in their Sunday service, but some still refused the use of that instrument, because drums are usually identified with bad music genre, such as rock, jazz and other genres that show rebellion and sinful life. This article aims to study two instruments in Psalms 150 that are known as drums throughout Israelâ€™s history, which are toph and tslatsal. This study shows that drums were used by Israeli and also ancient Near East people as part of their life, especially to praise and worship God every day, as written in Psalms. I used qualitative method of literature study to uncover data about the two instruments from the Bible using native language of Hebrew, English, and Indonesian, traditional Jewish notes, church fathersâ€™ commentary in early Christianity, and also a few journals that have examined the study of the use of drums in the past and also modern. I show that eventhough early church fathers had refused the use of drums in early Christianity, but no Jewish tradition opposed the use of drums to worship God. For Psalms writer, drums are tools or expressions of praise to God. I argue that churches need to realize drums as one of media that God allows to evolve to be used to worship God, especially in Sunday service.Keywords: Psalms, toph, tslatsal, drums, service.Â ABSTRAKÂ Â Â Â Alat musik drum sebagai salah satu instrumen di dalam sebuah band seringkali mendatangkan pertentangan sehubungan dengan penggunaannya di dalam ibadah. Beberapa gereja mainstream memang sudah menerima penggunaan drum di dalam ibadah umumnya, tetapi sebagian lagi masih menolak instrumen tersebut, karena drum diidentikan dengan beberapa genre musik yang buruk, seperti rock, jazz, dan genre lain yang menunjukkan pemberontakan dan kehidupan dosa lainnya. Artikel ini bertujuan untuk mengkaji dua instrumen di dalam Mazmur 150 yang dikenal sebagai alat musik drum di sepanjang sejarah Israel, yaitu toph dan tslatsal. Kajian ini menunjukkan bahwa instrument drum tersebut digunakan oleh orang Israel dan juga Timur Dekat Kuno sebagai bagian kehidupan, terutama untuk beribadah dan memuji Tuhan sehari-hari, seperti yang tertulis di dalam kitab Mazmur. Peneliti menggunakan metode kualitatif studi pustaka untuk menggali data mengenai dua instrumen tersebut dari Alkitab dengan bahasa asli Ibrani, Inggris, dan Indonesia, catatan-catatan tradisi Yahudi, catatan tafsiran dari bapa-bapa gereja di awal-awal kekristenan, dan juga berbagai artikel jurnal yang telah membahas kajian penggunaan instrument drum di masa lampau dan juga modern. Peneliti menunjukkan bahwa sekalipun bapa-bapa gereja awal sempat menolak penggunaan drum di awal-awal kekristenan, tetapi tidak ditemukan tradisi Yahudi yang mempersoalkan penggunaannya untuk memuji Allah. Bagi penulis Mazmur, drum merupakan alat atau ekspresi dari pujian kepada Allah. Peneliti berargumen bahwa gereja perlu menyadari bahwa drum merupakan salah satu media yang Allah izinkan berkembang untuk dapat digunakan memuji Tuhan, terutama di dalam ibadah.Kata Kunci: Mazmur 150, toph, tslatsal, drum, ibadah.

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20

Dawood, Saad Salih. "The efficiency calibration for local manufacturing gamma scanning systems of radioactive waste drums." Iraqi Journal of Physics (IJP) 15, no. 35 (2018): 100–108. http://dx.doi.org/10.30723/ijp.v15i35.58.

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The Local manufacturing scanning gamma system designed in Tuwaitha site for nondestructive assay method of radioactive waste drums, where it consist of two main parts with their belongings for controlling the of detector and drum movements up-down and rotation respectively. The volume of the used drum is 220 L with 85 cm height. The drum filled with Portland cement. Six cylindrical holes were made within cement drum and distributed in radial arrangement.The152Eu source inserted in these holes individually, to measure the average angular count rate of gamma radiation. The full energy efficiency value for geometry of drum and detector is computed for thirteen photo peaks. The average efficiency represented by the curve of these peaks indicated the decreasing of efficiency value with increasing the cement thickness and the distance between the detector and the location of radioactive source inside the drum.

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21

Sobota, Piotr. "Comparison of Conventional Sprocket Drum and Sprocket Drum with Modified Design." Archives of Mining Sciences 61, no. 3 (2016): 509–22. http://dx.doi.org/10.1515/amsc-2016-0037.

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Abstract Seats in conventional sprocket drums are symmetrical. Due to the set general direction of sprocket drum revolutions resulting from the direction of rock transport, the wear of the seat bottoms and teeth flanks may be reduced by introducing the asymmetry of the profile of the sprocket drum seats. The proposed modification of sprocket drum seats’ profile consists of inclining the seat bottom towards the expected direction of the basic drum revolutions. The work compares the loads on the seats and teeth of a conventional drum with its profile conforming to the standard to a modified drum with an asymmetric profile of seats. For the general direction of sprocket drum revolutions, the maximum values of all forces are higher for a standard drum than for a modified drum. The profile asymmetry substantially shortens the friction path of the horizontal link front torus on the seat bottom and relative total friction work on the seat bottom and lessens the occurrence probability of the slide of the horizontal link rear torus on the tooth flank. The modification of the profile causes also the asymmetric wear of link joints. The total relative friction work is considerably reduced in the front joint as compared to a conventional drum, and the total relative friction work in the rear joint is increasing at the same time.

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22

Javed, Kashif. "Boiler feed water pumps: techniques for improvement in design and balance of the drum." Natural and Applied Sciences International Journal (NASIJ) 3, no. 2 (2022): 15–29. http://dx.doi.org/10.47264/idea.nasij/3.2.2.

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Boiler Feed Water Pumps (BFWP) are considered a critical part of boilers in power plant operations. The performance of the pump in a system is estimated by one of these quantifiers in pump performance (power, efficiency, head, and flow). The design and balance of the drum in the boiler feed pump are critical for the smooth flow and optimum efficiency of the pump. The wearing tolerance limits of the drum are correlated with the type of pump and the characteristics of the system in which it is installed. A study was conducted to evaluate the drum design at Saudi Aramco Jazan Integrated Gasification Combined Cycle (IGCC) Power Block Project. The study provided a mechanism for improvement in the design issues associated with the internal clearance of balance drums related to the BFWPs. Furthermore, gradual design improvements were also implemented. Successful performance testing of Boiler Feed Water Pumps (BFWPs) fitted with upgraded balance drums was also performed. This study provides a better understanding of drum design and techniques to improve the balance of the drum.

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Hlosta, Jakub, Lucie Jezerská, Jiří Rozbroj, David Žurovec, Jan Nečas, and Jiří Zegzulka. "DEM Investigation of the Influence of Particulate Properties and Operating Conditions on the Mixing Process in Rotary Drums: Part 2—Process Validation and Experimental Study." Processes 8, no. 2 (2020): 184. http://dx.doi.org/10.3390/pr8020184.

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The process of homogenization of particulates is an indispensable part of many industrial processes, and, therefore, it is necessary to pay a special attention to this area and develop it. This paper deals with a complex study of homogenization of particulate matters in a rotary drum in terms of shape, size, and density of particles. In addition, the influence of operating parameters, such as drum filling capacity, rotational speed, and drum filling pattern are also investigated. Studies of reproducibility of discrete element method simulations, effects of rotary drum sizes or effects of drum volumetric filling to the mixture homogeneity index were also carried out. In general, the least satisfactory values of the homogeneity index resulted from the mixing of particles with different densities. The dominating factor of homogenization was the drum filling-up degree. The course of the homogeneity index in 140, 280, and 420 mm drums was very similar and after five revolutions of the drum, identical values of the homogeneity index were achieved for all the drum diameters. The optimal drum filling-up degree is at 40–50% for the spherical particles and 30–40% for the sharp-edged particles. The repeatability of simulations showed the maximum relative standard deviation of the homogeneity index at 0.6% from ten simulation repetitions with the same parametric conditions.

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Kim, Jihyun. "A Study on the Historical Transition Process of Bass Drum Pedal." Korean Society of Culture and Convergence 45, no. 10 (2023): 1015–27. http://dx.doi.org/10.33645/cnc.2023.10.45.10.1015.

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The purpose of this paper is to study the historical transformation process of the base drum pedal, which can be considered to have played a key role in the birth of the drum set. The invention of the base drum pedal changed from a form in which several players played one percussion instrument to a form in which one player could play multiple percussion instruments, and later, with the development of set drums, new types and mechanisms such as twin pedals and direct pedals emerged. The study of bass drum pedals is very closely related to the history of jazz music development. In the end, it can be judged that the development of bass drum pedals had a very great influence on the birth of modern popular music. We hope this study will help researchers and students in jazz music history, pop music history, instrumental theory and practical music understand the development and development process of bass drum pedals.

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Li, Jia, Lei Wang, and Xin Wang. "Fatigue Life Reliability Analysis of Belt Conveyor Driving Drums Based on FEM." Advanced Materials Research 118-120 (June 2010): 492–96. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.492.

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Conveyer system security and reliability are related to belt conveyor drum design level .This paper proposes a method of analyzing the belt conveyer drum fatigue life reliability based on FEM, and establishes a real-time dynamic loading model, which can reflect accurately the condition of drum actual work load. This method realize drums fatigue life reliability analysis by applying rain-flow count method for processing stress spectrum that are obtained from FEM, it combines material P-S-N curves and other performance parameters and adopts Miner ruler. By applying the method on a practical project, the results indicate that the method is correct and practical. It poses the ability of avoiding the blindness in the drum structure size design, and it has the vital significance of raising drum design level.

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Kristoffersson, Rolf. "The sound picture of the Saami shamanic drum." Scripta Instituti Donneriani Aboensis 14 (January 1, 1991): 169–82. http://dx.doi.org/10.30674/scripta.67202.

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Research on the Saami shamanic drum has mainly concerned the pictorial world of the drumhead. Therefore, studying the sound picture may give new insights into the Saami Shamanic drum. In my study of the Saami drum I have tried to find the answer to two questions: 1) Is it possible to detect the sound pictogram from some of the drums preserved? 2) Are there marks of usage which might indicate what kind of sounds the users preferred? A comparison of the different drums shows that the signs of usage are surprisingly consistent. The drum sounds reach the receptive organs in the human ear in a range of low but strong tones, with low frequencies but high amplitude. This means that more energy is transferred into the nervous system than with various other types of instrumental sounds.

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27

Rambabu, D., R. Gopinath, U. Senthil rajan, and G. B. Bhaskar. "Weight reduction of a standard brake drum: A design approach." International Journal of Engineering & Technology 3, no. 2 (2014): 201. http://dx.doi.org/10.14419/ijet.v3i2.1822.

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A Brake drum is specialized brake that uses the concept of friction to decelerate the vehicle speed. The deceleration is achieved by the assistance of the friction generated by a set of brake shoes or pad, when operator presses against a rotating brake drum. The material generally preferred for making the brake drum is grey cast iron or vermicular cast iron. The drum brake is highly efficient for hand brake and service brake applications. During the operation of drum brake excessive heating of brake drum may occur. This excessive heating occurs due to repeated or frequent contact of the brake shoes against the drum. This causes the drum to crack, oversize, extreme wear, out of round drums and also leads to vibration which while braking will leads to reduced brake drum life and braking efficiency. The Un-laden weight of the vehicle will result in increased fuel consumption, reduced payload and ride handling characteristics. The objective of the paper is to improve the thermal characteristics by incorporating fins in the brake drum and to reduce the un-laden weight of the vehicle by changing the rib thickness, wall thickness and base flange thickness. The design is done by using 3D CAD Modelling software and Hexahedral finite element model prepared by using CAE pre-processing software and Stiffness analysis. Design iterations are carried out by using Linear/Non-linear Finite Element Solvers, Stress Displacement and Temperature is post-processed for design validation. Optimized design solution obtained based on the comparison study between the iteration with rib thickness 75 mm, star shaped removal and wall thickness 17 mm has been chosen. 1.8Kg of weight is being reduced from the brake drum including fins. Keywords: Drum Brake, 3D CAD Modelling, Para Metric Matrix, Structural Analysis, Fins.

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28

Abdukarimov, Abdusalam. "VERTICAL SPINDLE COTTON HARVESTER WITH SYMMETRIC MOVEMENT OF SPINDLE DRUMS." International Journal of Modern Manufacturing Technologies 13, no. 3 (2021): 8–13. http://dx.doi.org/10.54684/ijmmt.2021.13.3.8.

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The article deals with the trends in the development of structures, research work on modernization and creation of new vertical spindle cotton harvesting apparatus (CHA). Authors developed new CHA that works as follows: the CHA with a cotton picker moves on the cotton field; the cotton plants getting into the inter-drum slots are processed, that is, the raw cotton be harvested. The CHA are in their original position before picking raw cotton. When a thick cotton plant gets into the inter-drum slot of the front pair of drums, the spindle drums move apart and the inter-drum slot opens, while the connecting rods and the sliders move forward, providing the symmetrical opening of the slot relative to the longitudinal line of the cotton plant row. Further, this thick plant falls into the inter-drum slot of the second pair of drums, while the inter-drum slot of the second drums opens, while the connecting rods and the sliders move along the guides forward, providing the symmetrical opening of the slot relative to the longitudinal line of the cotton plant rows. With such a pairwise symmetric movement of the SD, depending on the thickness of the cotton plant, the force of spindle pressing on the cotton plant from both sides is identical and symmetrical, since the SD move symmetrically to the longitudinal line passing along the cotton plant row.

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29

Garcia, Elizabeth. "Drum Major." Dialogue: A Journal of Mormon Thought 48, no. 4 (2015): 121–22. http://dx.doi.org/10.5406/dialjmormthou.48.4.0121.

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30

Rogers, Thomas P. "Electroacoustical drum." Journal of the Acoustical Society of America 98, no. 6 (1995): 3030. http://dx.doi.org/10.1121/1.413854.

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31

Koyamato, Hisakazu. "Electronic drum." Journal of the Acoustical Society of America 82, no. 6 (1987): 2169. http://dx.doi.org/10.1121/1.395840.

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Bozzio, Terry. "Electronic drum." Journal of the Acoustical Society of America 83, no. 4 (1988): 1715. http://dx.doi.org/10.1121/1.395873.

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33

Thirion, Terry R. "Acoustic drum." Journal of the Acoustical Society of America 85, no. 5 (1989): 2247. http://dx.doi.org/10.1121/1.397811.

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Peraino, Victor. "Drum mute." Journal of the Acoustical Society of America 85, no. 3 (1989): 1393. http://dx.doi.org/10.1121/1.397984.

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35

Aitkenhead, Theresa. "Drum Therapy." Brain & Life 20, no. 4 (2024): 7. http://dx.doi.org/10.1097/01.nnn.0001027948.86540.11.

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36

Edge, Neil R. "Musical drum." Journal of the Acoustical Society of America 80, no. 2 (1986): 716. http://dx.doi.org/10.1121/1.393963.

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Belli, Remo, and Donald R. Hartry. "Drum muffler." Journal of the Acoustical Society of America 80, no. 4 (1986): 1284. http://dx.doi.org/10.1121/1.394422.

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38

Bland, Stewart. "Micro-drum." Materials Today 14, no. 5 (2011): 187. http://dx.doi.org/10.1016/s1369-7021(11)70108-0.

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39

Buchanan, Mark. "Drum roll." Nature Physics 7, no. 10 (2011): 741. http://dx.doi.org/10.1038/nphys2115.

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40

Schäffer, Utz, and Jürgen Weber. "Drum prüfe, …!" Controlling & Management Review 64, no. 5 (2020): 3. http://dx.doi.org/10.1007/s12176-020-0122-6.

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41

Eventoff, Franklin N., and Mario J. DeCiutiis. "HYBRID DRUM." Journal of the Acoustical Society of America 134, no. 4 (2013): 3112. http://dx.doi.org/10.1121/1.4824267.

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42

Brust, Martin. "Drum prüfe ..." agrarzeitung 78, no. 16 (2023): 19. http://dx.doi.org/10.51202/1869-9707-2023-16-019.

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Da hat jemand einen echten Treffer gelandet: Vom Blog eines Karrierecoachs in die Wirtschafts- und Ratgeberseiten großer Medien hat der Begriff „Blind Signing“ nur wenige Monate gebraucht. Was ist dran an der Thematik?

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Henderson-Arzapalo, Anne, and Robert L. Colura. "BLACK DRUM X RED DRUM HYBRIDIZATION AND GROWTH." Journal of the World Mariculture Society 15, no. 1-4 (2009): 412–20. http://dx.doi.org/10.1111/j.1749-7345.1984.tb00175.x.

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Dennis, Denny R., and Marcel R. Daignault. "Drum practice pads and drum pad musical instruments." Journal of the Acoustical Society of America 112, no. 4 (2002): 1240. http://dx.doi.org/10.1121/1.1520946.

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45

Simantel, Gary. "Beating the Drum for Multi-Drum Siphon Tubes." Opflow 23, no. 12 (1997): 7. http://dx.doi.org/10.1002/j.1551-8701.1997.tb02086.x.

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46

Li, Duo Min. "Development of Green Remanufacture Mechanized Production Line which Use for 200L Oil Drum (iron) Circulation Use." Advanced Materials Research 311-313 (August 2011): 2322–27. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2322.

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The 200L oil drum is widely applied as a result of its various aspects superior performance, implementation of 200L oil drum implementation circulation use may reduce the production cost, reduces the environment pollution and the resources waste, therefore the 200L oil drum's circulation use has the enormous prospect. Based on the oil drum orthopedic, outside surface clean, internal surface clean, drying four critical processes, this article has developed the 200L oil drum circulation use mechanization production line. This production line has made significant improvements on the production technology and automation. The device will not only improve the quality of the renovation of oil drums but also improve production safety.

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47

Lundmark, Bo. "An excursion on Linneaeus's drum from Sorsele." Scripta Instituti Donneriani Aboensis 14 (January 1, 1991): 96–110. http://dx.doi.org/10.30674/scripta.67198.

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When Linnaeus made his journey to Holland in 1735, a Saami drum was included in his baggage. The original owner of the drum was the Saami, Anders Nilsson Pont of Granbyn, who was denounced for the possession and use of drums. In this way Linnaeus received greetings from Lycksele lappmark, where he had never set foot. The most likely explanation is that Linnaeus got the drum from Georg Wallin the younger, who made a visit of inspection in 1715.

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48

Simonsen, Veronica P., Nathan Hale, and Ingve Simonsen. "Eigenmodes of fractal drums: A numerical student experiment." American Journal of Physics 92, no. 2 (2024): 115–22. http://dx.doi.org/10.1119/5.0140853.

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“Can one hear the shape of a drum?” was a question posed (and made famous) by mathematician Mark Kac in the mid-1960s. It addresses whether a deeper connection exists between the resonance modes (eigenmodes) of a drum and its shape. Here, we propose a numerical experiment, suitable for advanced undergraduate physics students, on the calculation of the eigenmodes of a square Koch fractal drum, for which experimental results do exist. This exercise is designed to develop the students' understanding of the vibrations of fractal drums, their eigenmodes, and potentially their integrated density of states. The students calculate the lowest order eigenmodes of the fractal drum, visualize these modes, and study their symmetry properties. As an extension, the students may investigate the integrated density of states of the fractal drum and compare their findings to the Weyl–Berry conjecture.

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Karelina, Maria, Tatyana Balabina, and Alexey Mamaev. "Analytical determination of application point and normal reaction arm when rolling a wheel on a drum." MATEC Web of Conferences 341 (2021): 00039. http://dx.doi.org/10.1051/matecconf/202134100039.

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Evaluation of the rolling resistance of car tires is now often performed on drum stands like car tests. This necessitates the study of the mechanics of interaction between the wheel and the drum in order to determine its force and kinematic characteristics, including the values and points of application of tangential and normal forces in contact with the drum. These problems can be solved taking into account that the mechanics of elastic wheel rolling on a drum is the same as when rolling on a flat rigid support surface. In this paper, from consideration of the mechanics of interaction between an elastic wheel and a drum, using the equations of power balance and force equilibrium of the wheel, the equations for determining the point of normal reaction in contact and its arm relative to the wheel axis during its rolling along one and two drums have been derived.. These dependencies have a simple form and can be applied when considering the rolling of both a single wheel and the car as a whole on a drum stand.

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Yu, Kai An, Tao Yang, and Chang Zhi Gong. "Design and Research of Double-Drum Winch with Anti-Pressure Wheel." Advanced Materials Research 479-481 (February 2012): 1709–13. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.1709.

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In view of the problems of large stress and severe bearing heating in double-drum winch at present, this paper adopted a new method to enhance bearing capacity for double-drum winch by adding anti-pressure wheels between two drums. Finite element methods were used to analyze the strength of 4000kN-traction double-drum winches with anti-pressure wheels and without anti-pressure wheels respectively. The results of the analysis revealed that the stress of the cylinder bearing decreased from 264MPa to 167MPa. The new method by adding anti-pressure wheels had remarkably improved the endurance of the bearing. Therefore, the design method can be widely used in large-traction double-drum winch.

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