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Evaluation of Different Concepts for Pressed and Sintered Connecting Rods
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik.
2019 (Engelska)Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

Connecting rod are found in most combustion engines and transmits thrust from the piston to the crankshaft. The connecting rod needs to withstand forces from the piston and inertia forces which results in axial tension, compression stresses and bending. Today the most common manufacturing techniques in automotive industry are drop-forging, die-casting and the Powder Metallurgy technique used is powder-forging.

In this Master Thesis different connecting rod designs for a single press PM manufacturing process were created and evaluated as a part of Höganäs AB's Total Powder Metal Car project, TPMC. This paper will serve as a basis for future connecting rod projects at Höganäs AB when choosing a suitable connecting rod design.

The main objective of this Master Thesis is to evaluate different designs in regards to the following:

  • Buckling strength
  • Fatigue life
  • Manufacturing rating

The study shows that there is evidence that a single pressed connecting rod is possible. No absolute answer of which design is the best is given in this paper since in depends on different parameters and application. For each parameter examined there are results presented and arguments for and against each design which can aid designers in future work.

Suggestions of improvement on both the method and on the designs are presented in respect to the results. The improvements may potentially increase the fatigue life, buckling strength and improve manufacturability.

Ort, förlag, år, upplaga, sidor
2019. , s. 64
Nyckelord [en]
Connecting Rod, Con Rod, Fatigue, Buckling, Manufacturing, Höganäs AB, CAD, FEM, FEA
Nationell ämneskategori
Maskinteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-74410OAI: oai:DiVA.org:ltu-74410DiVA, id: diva2:1323390
Externt samarbete
Höganäs AB
Ämne / kurs
Examensarbete, minst 30 hp
Utbildningsprogram
Civilingenjör, Maskinteknik
Examinatorer
Tillgänglig från: 2019-06-26 Skapad: 2019-06-12 Senast uppdaterad: 2019-06-26Bibliografiskt granskad

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