Stress and Durability Analysis of Threaded Connections in a Cast Aluminum Cyl...Altair
ย
Bolted connections involve sharp notched components that are therefore sensitive to fatigue loading. In internal combustion engines, the journal bearings of the crankshaft are supported by bearing caps which are bolted to the cylinder block. These threaded connections are a fatigue concern as cracking may be experienced on dynamometer tests of new engines. The critical element of this application however is not the steel studs rather the threaded bolt holes in the cast engine block. While the nominal stress concept is applicable to the fatigue design of studs, a local stress approach has to be adopted to assess the fatigue strength of threaded bolt holes.
This paper addresses the fatigue design of this kind of threaded connection. Initially alternate methods of FE modeling and analysis of threaded joints by the local approach are critically examined. The parallel development of a simplified experimental test system involving a threaded hole in cast AlSi7 is described and used to generate baseline fatigue data under known loading conditions. The fatigue behavior of the experimental system is then analyzed on the basis of alternate FE models and post processing approaches. Finally, recommendations for the accurate and computationally efficient FE modeling and durability analysis of threaded connections in cast aluminum cylinder block are outlined.
Speakers
Marco Bersella, Engineer, TP Engineering srl
Presentation on Remanufacturing of Engine Block of a locomotive at DMW, PatialaArjun Gaur
ย
The presentation is related to my Internship at D.M.W, Patiala, one of the primate manufacturers for Indian Railways. The project assigned to me was to study the rehabilitation and remanufacturing of the Engine Block of a locomotive. Although there might be some minute loop holes in the presentation as it has been 2 years since I left that very place, but more or less everything is same. In fact, it was during my training that the Ministry of Railways decided to manufacture and roll out Multi- Genset loco called WDM 2G. So for any basic queries regarding the presentation feel free to contact.
Stress and Durability Analysis of Threaded Connections in a Cast Aluminum Cyl...Altair
ย
Bolted connections involve sharp notched components that are therefore sensitive to fatigue loading. In internal combustion engines, the journal bearings of the crankshaft are supported by bearing caps which are bolted to the cylinder block. These threaded connections are a fatigue concern as cracking may be experienced on dynamometer tests of new engines. The critical element of this application however is not the steel studs rather the threaded bolt holes in the cast engine block. While the nominal stress concept is applicable to the fatigue design of studs, a local stress approach has to be adopted to assess the fatigue strength of threaded bolt holes.
This paper addresses the fatigue design of this kind of threaded connection. Initially alternate methods of FE modeling and analysis of threaded joints by the local approach are critically examined. The parallel development of a simplified experimental test system involving a threaded hole in cast AlSi7 is described and used to generate baseline fatigue data under known loading conditions. The fatigue behavior of the experimental system is then analyzed on the basis of alternate FE models and post processing approaches. Finally, recommendations for the accurate and computationally efficient FE modeling and durability analysis of threaded connections in cast aluminum cylinder block are outlined.
Speakers
Marco Bersella, Engineer, TP Engineering srl
Presentation on Remanufacturing of Engine Block of a locomotive at DMW, PatialaArjun Gaur
ย
The presentation is related to my Internship at D.M.W, Patiala, one of the primate manufacturers for Indian Railways. The project assigned to me was to study the rehabilitation and remanufacturing of the Engine Block of a locomotive. Although there might be some minute loop holes in the presentation as it has been 2 years since I left that very place, but more or less everything is same. In fact, it was during my training that the Ministry of Railways decided to manufacture and roll out Multi- Genset loco called WDM 2G. So for any basic queries regarding the presentation feel free to contact.
A basic 2 day training on understanding of GDnT,Geometrical Dimensioning & Tolerancing to Technical & Egineering Group as a common language in understanding Drawings.
Trainer & Speaker
Timothy Wooi,
20C,Taman Bahagia,06000,Jitra, Kedah. Malaysia
email: timothywooi2@gmail.com
Each month, join us as we highlight and discuss hot topics ranging from the future of higher education to wearable technology, best productivity hacks and secrets to hiring top talent. Upload your SlideShares, and share your expertise with the world!
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1. Tugas Matematika
Integral Hal 49- 59
Disusun Oleh :
POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG
TAHUN AJARAN 2014/2015
Industri Air Kantung Sungailiat 33211
Bangka Induk, Propinsi Kepulauan Bangka Belitung
Telp : +62717 93586
Fax : +6271793585 email : polman@polman-babel.ac.id
http://www.polman-babel.ac.id
Kelompok 7 :
- Rakam Tiano
- Sarman
- Fery Ardiansyah
- Mirza ramadhan
13. Integrasi dengan menggunakan tabel rumus
terpisahkan
Latihan 8.3
Gunakan tabel rumus integral dalam Lampiran C untuk menemukan integral tak tentu yang
paling umum.
1. cot ๐ฅ ๐๐ฅ
2.
1
๐ฅ+2 (2๐ฅ+5)
๐๐ฅ
3. ๐๐๐ฅ 2
๐๐ฅ
4. ๐ฅ cos ๐ฅ ๐๐ฅ
5.
๐ฅ
๐ฅ+2 2 ๐๐ฅ
6. 3๐ฅ๐ ๐ฅ
๐๐ฅ
7. 10 ๐ค + 3 ๐๐ค
8. ๐ก(๐ก + 5)โ1
๐๐ก
9. ๐ฅ ๐ฅ + 2 ๐๐ฅ
10.
1
sin ๐ข cos ๐ข
๐๐ข