Sökning: "steel sheets"

Visar resultat 6 - 10 av 46 avhandlingar innehållade orden steel sheets.

1. 6. Modelling of Failure in High Strength Steel Sheets

   Författare :Oscar Björklund; Larsgunnar Nilsson; Odd Geir Lademo; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : In this theses the high strength steel Docol 600DP and the ultra high strength steel Docol 1200M are studied. Constitutive laws and failure models are calibrated and veried by the use of experiments and numerical simulations. LÄS MER

3. 7. The early stage of galling

   Författare :Patrik Karlsson; Pavel Krakhmalev; Anders Gåård; Braham Prakash; Örebro universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Galling; Stainless steel; Tool steel; Friction; Sliding wear; SOFS; Tribology; Wear; Materialteknik; Materials Engineering;

   Sammanfattning : In sheet metal forming (SMF) of materials such as stainless steels there is a major problem with transfer and accumulation of sheet material to the metal forming tool surface. The problem is known as galling; a kind of severe adhesive wear, which results in severe scratching of produced parts. LÄS MER

4. 8. Tribology of stamping : the influence of designed steel sheet surface topography on friction

   Författare :Daniel Wiklund; Högskolan i Halmstad; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel sheet; tribology; surface topography; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

   Sammanfattning : Tribology is the science of friction, wear, and lubrication; the interaction of surfaces in relative motion. The tribological conditions in sheet metal forming influences the flow of material in forming operations, the strain distributions of sheet material, extent of wear, and thereby the quality of products. LÄS MER

5. 9. On tool steel, surface preparation, contact geometry and wear in sheet metal forming

   Författare :Fredrik W. Lindvall; Jens Bergström; Staffan Jacobson; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wear; Galling; sheet metal; deep drawing; Tool steel; surface preparation; Friction; Materialteknik; Materials Engineering;

   Sammanfattning : In sheet metal forming operations the life length of the production equipment islargely dependent on the wear of the tools that are in direct contact with the sheet.One form of adhesive wear where some sheet material gets transferred to the tool, alsoknown as galling, is the most common cause of tool failure. LÄS MER

7. 10. Mechanical properties of stainless steel clinched joints

   Författare :Per Sjöström; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Clinching is a joining method for sheet material where the joint is created without need of heat or additional material. The material is joined by local plastic deformation creating a geometrical locking. Since the materi al is not heated during joining, problems caused by HAZ or phase transformation during heating or cooling can be avoided. LÄS MER