Free Essay

Enginering

Submitted By mhornback44
Words 856
Pages 4
ME Analysis Project #2

Christian Seymour

Due Date: December 12, 2013

Abstract:
The diameter for my shaft design was hand calculated to be 0.8756” for a factor of safety or 2. This factor of safety was expected to be the outcome in FEA SolidWorks and it was not. The reason for this is simply SolidWorks is not the best tool to use for complex designs and loads as ours was. It worked great for the simple beam deflection in the last project. Many times hand calculations are the long way of doing things. In this case, it took much longer to figure out the correct way of adding fixtures, load, and connections in SolidWorks. Many of the material properties in SolidWorks are also not the same as they are in our book. Simply said, choosing which method to use is the hardest decision to make. Sometimes FEA analysis is better, and in some cases, hand calculations are the easiest.
Background:
We have been given the task to design a shaft to specific guidelines using inch size pillow blocks. We will perform appropriate calculations using modeling techniques and verify the design in SolidWorks FEA program. The problem is 7-5 in the book and is shown below:

The problem statement: A geared industrial roll shown in the figure is driven at 300 rev/ min by force F acting on a 3-in-diamter pitch circle as shown. The roll exerts a normal force of 30 lbf/in of roll length on the material being pulled through. The material passes under the roll. Design a shaft for the situation of the industrial roll with a design factor of 2 and a reliability goal of 0.999 against fatigue failure. Pick a shaft size that does not deflect greater than 2”.
We have been given this problem to see how we will approach a design problem like this and I hope I have approached it correctly. I plan to figure out all of the statics, and back solve for a diameter using a factor of safety of 2.
Experimental Techniques:
The first step in designing this shaft is to calculate the statics of the shaft. You will have to pay extra attention to the areas you think are of concern. In this case, it will be the area of the shaft right before the roller. The maximum moment will be calculated from shear and bending diagrams. Once the alternate moment and mean torsion are calculate the endurance limit must be calculated. Here is where the material of the shaft will be chosen. Stress risers will be calculated next for the area of concern right before the roller. Once all of this data is hand calculated it can be placed into an excel worksheet. The worksheet will back solve an appropriate diameter given a factor of safety. This shaft will be created in SolidWorks will be compared to see how well FEA SolidWorks performs.

Results and Discussions:
Statics has been calculated below in both the x-y and x-z planes. The mean torque is equal to 192 lbf. The alternating moment is equal to 375 lbf-in. Both the alternating torque and mean moments are equal to zero.

Once the Statics was figured out I went straight to choose the material. I chose 1020 CR steel because it is very often used as a shaft. The Endurance limit was calculated next. I left k_b as an equation in my excel program so it would change with the diameter. Stress concentration factors were used for the fillets between the shaft and roller and also the rise from the shaft diameter to the 4” roller.

Once all calculated data was found they were simply placed into my excel spreadsheet. I back solved for a diameter by setting the factor of safety to a value of 2, as stated in the problem. It gave me the diameter of 0.8756”.

Once the hand calculations were finished, the model in SolidWorks could be created. The shaft, roller, and gear were all created as one part, because in reality, whether welded, hot pressed, etc., they act as one part. Appropriate bearings were found at McMasterCarr.com. Once the assembly was created the FEA study could begin. Appropriate loads had to be applied, which we found in the calculations we performed. Bearing connections and fixed points also had to be created. The assembly was meshed and our results were displayed.
Conclusion:
The diameter for my shaft design was hand calculated to be 0.8756” for a factor of safety or 2. This factor of safety was expected to be the outcome in FEA SolidWorks and it was not. In SolidWorks it was calculate to be 25. Many of the material properties in SolidWorks are not the same as they are in our book. Also, the calculations can be different by how we fix and connect our model. There are so many options in SolidWorks it is easy to become lost. The positive of this FEA analysis is that my shaft did not exceed the 2” deflection limit. Our shaft was a good choice.

Similar Documents

Free Essay

Kombs Enginering

...¿Cómo puede innovar una Pyme? Manuel Ruiz Aldereguia Constantemente se está bombardeando a las PYMES para que innoven, puesto que sin innovación no hay futuro, y sin futuro no hay empresa, pero ¿Cómo puede innovar una Pyme?. Las pequeñas empresas se definen como aquellas que tienen entre 10 y 49 trabajadores, y las medianas entre 50 y 249. En los últimos años, debido a la tremenda reducción de personal que han sufrido las empresas, muchas han pasado de grandes a medias y de medias a pequeñas, quedándose con el personal justo para poder llevar a cabo su producción o sus servicios, lo cual les ha dejado en una situación que cualquier actividad que no sea productiva de forma directa e inmediata es difícil de abordar. Las Pymes, normalmente, no disponen de departamentos de marketing, de ventas, financieros, etc., si no que disponen de la persona, o de un equipo, de marketing, que además hacen otras cosas, del jefe de ventas y comerciales, del contable, …., y desde luego no disponen, normalmente, de un departamento de innovación, ni tan siquiera, excepto en casos excepcionales, de un departamento de I+D. Con lo cual nos seguimos preguntando, ¿Cómo puede innovar una Pyme?. El propietario, los socios, o algún directivo involucrado suelen llevar iniciativas de mejora, en productos, servicios, procesos, etc., que pueden ser consideradas como innovaciones, pero se encuentran después con la dificultad de implantar y poner en marcha dichas iniciativas en la empresa, pues normalmente......

Words: 633 - Pages: 3

Free Essay

Company Contract

...The undersigned musical artist/group is under binding contract with A PRODIGAL SON ENT with the following restrictions, expectations and regulations formerly agreed upon by the named company, it's affiliates and the artist/group. _______A PRODIGAL SON ENT is herby agreeing to uphold the following services on the predetermined dates times and schedule. A.P.S.E. will appoint an account manager to each artist/group that will be responsible along with the C.E.O and C.O.O for handling all of the account processes. _______A.P.S.E will create a personal website dedicated to that artist/group within 1 month of a signed contract. The personalized website will include a bio, photos, songs if applicable, booking information through A.P.S.E, and any other music information the artist and A.P.S.E. agree demable for exposure. The website information will be provided to the artist however it is property of A.P.S.E. while under contract and any edits must be authorized by account manager prior to changes. This website will be updated and maintained weekly by the account manager appointed to that artist/group. It will be expected of the artists to be involved in the promotion of this website by inviting all prior contacts, personal and business via email, twitter, facebook etc. _______A.P.S.E. will provide a photo shoot to the artist/group within a 3 month period; unless a different time frame is explained due to location and availability and will be disclosed prior. The photo shoot will...

Words: 817 - Pages: 4

Theoritical Framework Analysis

...Theoritical Framework Communication Channels * The medium selected by the sender through which the message travels to the receiver Types of Channels * Formal Channels * Are established by the organization and transmit messages that are related to the professional activities of members * Informal Channels * Used to transmit personal or social messages in the organization. These informal channels are spontaneous and emerge as a response to individual choices Direct of Communication Downward Communication is the communication that flows from one level of a group or organization to a lower level. Group leaders and managers use it to assign goals, provide job instructions, explain policies and procedures, point out problems that need attention, and feedback about performance. When engaging in downward communication, managers must explain the reason why a decision was made. Upward Communication flows to a higher level in the group or organization. It’s used to provide feedback to higher-ups, inform them of progress toward goals, and relay current problems. Upward communication keeps managers aware of employees feel about their jobs, co-worker, and the organization in general. Managers also rely on upward communication for ideas on how conditions can be improved. Lateral Communication Communication take place among members of the same work group, members of work groups at the same level, managers at the same level, or any other horizontally......

Words: 1839 - Pages: 8

Free Essay

“Metrology Helps Automation Deliver More, Faster”

Words: 416 - Pages: 2

Free Essay

Welding Safety

Words: 659 - Pages: 3

Asas

...Electric Circuits and Fields: Network graph, KCL, KVL, node and mesh analysis, transient response of dc and ac networks; sinusoidal steady-state analysis, resonance, basic filter concepts; ideal current and voltage sources. The venin's, Norton's and Superposition and Maximum Power Transfer theorems, two-port networks, three phase circuits; Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions; Ampere's and Biot-Savart's laws; inductance; dielectrics; capacitance. Signals and Systems: Representation of continuous and discrete-time signals; shifting and scaling operations; linear, time-invariant and causal systems. Fourier series representation of continuous periodic signals; sampling theorem; Fourier, Laplace and Z transforms. Electrical Machines: Single phase transformer - equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers - connections, parallel operation; auto-transformer; energy conversion principles. DC machines - types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors; three phase induction motors - principles, types, performance characteristics, starting and speed control; single phase induction motors; synchronous machines - performance, regulation and parallel operation of generators, motor starting, characteristics and applications; servo and stepper motors. Power Systems: Basic power generation......

Words: 875 - Pages: 4

Free Essay

...Road characteristics: road categories, road surfacing. Other road enginering structures. Lecturer I. Piščikienė Vilnius 2013 Introduction Content World bridges…………………………………………………………………………………………………..4 World longest tunnels………………………………………………………………………………………6 Types of roads………………………………………………………………………………………………….7 Roads surfacing……………………………………………………………………………………………….10 Conclusions……………………………………………………………………………………………………..13 List of sources………………………………………………………………………………………………….14 World bridges The world’s longest bridge is the Danyang-Kunsgan Grand Bridge(1) in China, part of the Beijing-Shanghai High-Speed Railway. The bridge, which opened in June 2011, spans 165 kilometres. This bridge constructed in just 4 years, employing 10.000 workers, at a cost of about 8.5 million dollars. It crosses low rice paddies, part of the Yangtze River Delta, with just a few miles of the bridge actually crossing the open water of Yangcheng Lake in Suzhou. The bridge averages about 31 meters off the ground. 1.Danyang-Kunsgan Grand Bridge The sidu river bridge(2) is the tallest bridge in the world, standing around 1.500 ft tall. The are exactly 1.550 feet from the bottom of the bridge to the valley floor. It is located at the border of Yichang and En’shi in the Hubei province. It is 1365 meters across. This bridge connects Shanghai on......

Words: 2444 - Pages: 10

Ethics Behavior and Social Responsibility

...Ethics Behavior and Social Responsibility International Accounting Member of Group : 1. Rahmawati Yulistya C1I015026 2. Muhamad Ilham Akbar C1I015012 3. Astria Wulan P C1I015013 4. Siffa Sandi Sasmita C1I015025 5. Cita Husna Raisya C1I015026 6. Wulan Nilam Sari C1I015031 7. Karina Aprilia W C1I015037 8. Riyan Ardiyana C1I015043 Jenderal Soedirman University Faculty of Economics and Business I. Introduction I. Background Ethics Behavior and Social Responsibility Ethical behavior is that which is morally accepted as “good” and “right”. And opposed to “bad” and “wrong”. Social responsibility is a moral principle of an entity, be it an organization or individual, to act towards betterment of society at large. It is a duty that every firm and individual should perform so as to maintain the balance between the environment and economy. Their actions should lead towards sustainable development so as to safeguard the interests of the coming generations and at the same time fulfilling the needs of present population. The responsibility can be active, by performing activities that directly advance social goals, or passive, by avoiding any engagement in socially harmful act. Organizations can manage ethics in their workplaces by establishing an ethics management program.  Brian Schrag, Executive Secretary of the Association for Practical and Professional Ethics, clarifies. “Typically, ethics programs convey corporate......

Words: 2862 - Pages: 12

Diabetic Retinopathy Literature Review

...Engineering , april 2008. [15] L. Tramontan, E. Grisan, and A. Ruggeri, ”An improved system for the automatic estimation of the arteriolar-to-Venular diameter ratio (AVR) in retinal images” ,inProc. 30th Annu. Int. Conf. IEEE Eng. Med. Biol.Soc., 2008 [16] C. Kondermann, D. Kondermann, and M. Yan, ”Blood vessel classifica-tion into arteries and veins in retinal images”;Proc. SPIE, Progr. Biomed. Opt. Imag., vol. 6512, no. 651247, Feb. 2007 [17] Harihar Narasimha-Iyer, Ali Can, Badrinath Roysam, Charles V. Stewart, Howard L. Tanenbaum, Anna Majerovics, and Hanumant Singh ;”Robust Detection and Classification of Longitudinal Changes in Color Retinal Fundus Images for Monitoring Diabetic Retinopathy” ;IEEE Transaction on biomedical enginering ,Vol. 53, No. 6, June 2006. [18] A. Mendonca and A. Campilho;”Segmentation of retinal blood vessels by combining the detection of centerlines and morphological reconstruc-tion”;IEEE Trans. Med. Imag., vol. 25, no. 9, pp. 1200-1213, Sep. 2006. [19] M. Foracchia, E. Grisan, and A. Ruggeri, ”Luminosity and contrast normalization in retinal images”; Med. Image Anal., vol. 9, no. 3, pp. 179-190, 2005. [20] M. Niemeijer, J. Staal, B. Ginneken, M. Loog, and M. Abramoff. (2004). DRIVE: Digital Retinal Images for Vessel Extraction[Online]. Available: http://www.isi.uu.nl/Research/Databases/DRIVE [21] K. A. Vermeer, F. M. Vos, H. G. Lemij, and A. M. Vossepoel,”A model based method for retinal blood vessel detection”;Comput. Biol. Med.,......

Words: 3295 - Pages: 14

Samsung Vrio Analysis

...Masters Programmes ------------------------------------------------- Assignment Cover Sheet Question: [Analyze a strategic issue facing Samsung Electronics Company] “This is to certify that the work I am submitting is my own. All external references and sources are clearly acknowledged and identified within the contents. I am aware of the University of Warwick regulation concerning plagiarism and collusion. No substantial part(s) of the work submitted here has also been submitted by me in other assessments for accredited courses of study, and I acknowledge that if this has been done an appropriate reduction in the mark I might otherwise have received will be made.” Introduction Samsung Electronics Company (SEC), Ltd founded in 1969 is a South Korean multinational electronics company and is the flagship subsidiary of the Samsung Group, accounting for 70% of the group's revenue. Since the introduction of monochrome television sets in 1971, it has grown on average 38 percent a year, broadening its product range from simple consumer electronics and home appliances to advanced information and communication equipment, computers and peripherals and semiconductors (Renee, 2007) . It is currently the world's largest manufacturer of mobile and smart phones, LCD Panels and televisions and displaced Apple Inc. as the largest technology company in 2011 (Renee, 2007). Industry boundary Samsung electronics has the following divisions * Consumer electronics (CE)...

Words: 5080 - Pages: 21

Free Essay

Penggabungan Usaha, Laporan Keuangan Konsolidasi, Investasi Perusahaan Asosiasi, Special Purpose Entilities (Spe)

...A. PENGGABUNGAN USAHA Penggabungan Usaha adalah penyatuan entitas-entitas usaha. Penggabungan entitas usaha yang terpisah adalah suatu alternatif perluasan secara internal melalui akuisisi atau pengembangan kekayaan perusahaan secara bertahap, dan seringkali memberikan manfaat bagi semua entitas yang bersatu dan pemiliknya. Dunia usaha semakin lama semakin berkembang dan persaingan dalam jenis produk, mutu produk, maupun pemasarannya semakin ramai dan ketat sehingga seringkali timbul persaingan yang tidak sehat dan saling mengalahkan. Untuk mengatasi adanya saling merugikan antara perusahaan yang satu dengan perusahaan yang lain, perlu kiranya diadakan suatu bentuk kerja sama yang saling menguntungkan. Salah satu bentuk kerjasama yang dapat ditempuh adalah dengan melalui penggabungan usaha antara dua atau lebih perusahaan dengan perusahaan yang lain baik yang sejenis maupun yang tidak sejenis. Berdasarkan pernyataan standar akuntansi keuangan (PSAK) No. 22 paragraf 08 tahun 1999 :”Penggabungan usaha (business combination) adalah pernyataan dua atau lebih perusahaan yang terpisah menjadi satu entitas ekonomi karena satu perusahaan menyatu dengan (uniting wiith) perusahaan lain atau memperoleh kendali (control) atas aktiva dan operasi perusahaan lain” Sifat Penggabungan Usaha • Horizontal integration Adalah penggabungan perusahaan-perusahaan dalam lini usaha atau pasar yang sama, misalnya perusahaan consumer product bergabung dengan perusahaan consumer......

Words: 3864 - Pages: 16

Free Essay

Economi

...BAB 7 A. PENGGABUNGAN USAHA Penggabungan Usaha adalah penyatuan entitas-entitas usaha. Penggabungan entitas usaha yang terpisah adalah suatu alternatif perluasan secara internal melalui akuisisi atau pengembangan kekayaan perusahaan secara bertahap, dan seringkali memberikan manfaat bagi semua entitas yang bersatu dan pemiliknya. Dunia usaha semakin lama semakin berkembang dan persaingan dalam jenis produk, mutu produk, maupun pemasarannya semakin ramai dan ketat sehingga seringkali timbul persaingan yang tidak sehat dan saling mengalahkan. Untuk mengatasi adanya saling merugikan antara perusahaan yang satu dengan perusahaan yang lain, perlu kiranya diadakan suatu bentuk kerja sama yang saling menguntungkan. Salah satu bentuk kerjasama yang dapat ditempuh adalah dengan melalui penggabungan usaha antara dua atau lebih perusahaan dengan perusahaan yang lain baik yang sejenis maupun yang tidak sejenis. Berdasarkan pernyataan standar akuntansi keuangan (PSAK) No. 22 paragraf 08 tahun 1999 :”Penggabungan usaha (business combination) adalah pernyataan dua atau lebih perusahaan yang terpisah menjadi satu entitas ekonomi karena satu perusahaan menyatu dengan (uniting wiith) perusahaan lain atau memperoleh kendali (control) atas aktiva dan operasi perusahaan lain” Sifat Penggabungan Usaha * Horizontal integration Adalah penggabungan perusahaan-perusahaan dalam lini usaha atau pasar yang sama, misalnya perusahaan consumer product bergabung dengan perusahaan consumer......

Words: 3868 - Pages: 16

Free Essay

Špedicija

...Sadržaj 1. Uvod...............................................................................................................................3 2. „Monte Line“ D.O.O....................................................................................................4 3. Obrada uvoznog robnog toka sa carinjenjem tereta na vozilu................................5 3.1.Zaključivanje ugovora o špediciji................................................................................5 3.2.Zaključivanje ugovora o transportu, prateća dokumentacija i CMR...........................7 3.3.Carinjenje robe i potrebna dokumentacija...................................................................8 3.4. Doprema robe, preuzimanje i podnošenje računa......................................................10 4. Obrada uvoznog robnog toka sa carinjenjem tereta u skladištu...........................11 4.1. Zaključivanje ugovora o špediciji.............................................................................11 4.2. Zaključivanje ugovora o transportu, transport robe do skladišta u kom se vrši carinjenje...........................................................................................................................12 4.3.Priprema i prosleđivanje dokumentacije potrebne za carinjenje................................13 5. Razlike između obrađenih robnih tokova................................................................14 6. Problemi do kojih može...

Words: 3741 - Pages: 15

Hr Practice

...HR PRACTICES OF WIPRO STUDENT UNDERTAKING This is to certify that we have completed the Project titled “H R P r a c t i c e s o f W I P R O ” under the guidance of Prof Sana Danani in partial fulfillment of the requirement for the award of degree of Bachelor of Management Studies at Rizvi College of Arts, Seience & commerce. This is an original piece of work & we have not submitted it earlier elsewhere. ROLL NO. 105 86 100 89 71 NAME: Jyoti Singh Atul kumar Pandey Muzaffar Shaikh Asim Qureshi Jangle Sanchit SIGN ACKNOWLEDGEMENT We would like to thank my Project Guide Prof. Sana Danani for her immense guidance, valuable help and the opportunity provided to us to complete the project under his guidance. I would like to thank all faculty members of Rizvi College of Arts, Science & Commerce for guiding and supporting me in the completion of project from time to time. Last but not the least, my gratitude to great almighty and my parents without whose concerned and devoted support the project would not have been the way it is today. ROLL NO. 105 86 100 89 71 NAME: Jyoti Singh Atul kumar Pandey Muzaffar Shaikh Asim Qureshi Jangle Sanchit SIGN SUBJECT PROFESSOR (Prof. Sana Danani) CO-ORDINATOR (Furkan Shaikh) CERTIFICATE This is to certify that the project titled “ HR p r a c t i c e s o f W I P R O ” is an academic work done by the following student submitted in the partial fulfillment of the requirement for the award of the degree of bachelor of......

Words: 8695 - Pages: 35