Sökning: "Jakob Olofsson"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Jakob Olofsson.

1. 1. Microstructure-based Mechanical Behaviour in Structural Analyses of Cast Components

   Författare :Jakob Olofsson; Ingvar L. Svensson; Salem Seifeddine; Torsten Sjögren; Jönköping University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Component behaviour; Structural analysis; Mechanical behaviour; Casting process simulation; Finite element method simulation;

   Sammanfattning : In the process of developing cast iron and cast aluminium components, the co-operation between product development and production is important. On the engineering level, this co-operation is limited already in the product development phase e.g. by the lack of established methods to consider the mechanical behaviour of the completed component. LÄS MER

3. 2. Simulation of Microstructure-based Mechanical Behaviour of Cast Components

   Författare :Jakob Olofsson; Ingvar L. Svensson; Salem Seifeddine; Franco Bonollo; Jönköping University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Component behaviour; structural analysis; mechanical behaviour; casting process simulation; Finite Element Method FEM simulation;

   Sammanfattning : In the process of developing cast iron and cast aluminium components, a high level of co-operation between product development and production is of great importance. From an engineering standpoint, this co-operation is limited early in the product development phase by e.g. LÄS MER

4. 3. Studier av läsrelaterade språkliga förmågor i förskola och läsutveckling i grundskola

   Författare :Birgitta Herkner; Mara Westling Allodi; Åke Olofsson; Jakob Åsberg; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; decoding; reading development; special education support; early identification; specialpedagogik; Special Education;

   Sammanfattning : The purpose of this doctoral thesis was to explore relationships that impact language development, and how reading ability develops during the compulsory school years. The thesis includes four studies, study I (licentiate thesis), with students from grades 2–5, from 24 classrooms (N = 428), study II examined whether the National test (NP) was able to identify students with word decoding problems from a sample of third graders from study I (n= 112). LÄS MER

5. 4. Multiscale Constitutive Modeling of Heterogeneous Engineering Materials

   Författare :Johan Jansson; Kent Salomonsson; Jakob Olofsson; Julian J. Rimoli; Jönköping University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : This work deals with different methods used to determine heterogeneous constitutive model parameters for macro-scale finite element models, based on microstructural variations, caused by the manufacturing process. These methods could be applied to decrease modeling errors associated with the material behavior, improving the predictive capabilities of structural analyses in simulation-driven industrial product development. LÄS MER

7. 5. Process-Induced Local Material Variations in Finite Element Simulations of Cast and Fibre Reinforced Injection Moulded Components

   Författare :Johan Jansson; Kent Salomonsson; Jakob Olofsson; Jönköping University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The purpose of this thesis is to provide an overview of the methods used in the appended papers, in order to consider heterogeneous material properties in finite element simulations by using process simulations as input. The work deals with both injection moulded and cast components, and focuses on process-induced local material variations and their effect on component performance. LÄS MER