Search for dissertations about: "Lars Olovsson"

Found 4 swedish dissertations containing the words Lars Olovsson.

2. 1. On the Arbitrary Lagrangian-Eulerian Finite Element Method

   Author : Lars Olovsson; Kenneth Runesson; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; large deformation plasticity; FEM; ALE; multi-material Euler; machining simulations;

   Abstract : This thesis has been devoted to the study and development of algorithms for Finite Element (FE) simulations of mechanical processes involving large deformations. Aspects of three different formulations have been considered:(i) The single material Arbitrary Lagrangian-Eulerian (ALE) formulation is a method where the FE mesh is allowed to move independently to the material flow. READ MORE

4. 2. Ovarian Reserve and Assisted Reproduction

   Author : Thomas Brodin; Jan Holte; Matts Olovsson; Lars Berglund; Juha Tapanainen; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; AFC; AMH; anti-Müllerian hormone; antral follicle count; follicle-stimulating hormone; FSH; ICSI; infertility; intracytoplasmic sperm injection; in vitro fertilization; IVF; LH; live birth; luteinizing hormone; menstrual cycle; menstrual cycle length; ovarian reserve; pregnancy; reproductive endocrinology; reproductive technology; Medicinsk vetenskap; Medical Science;

   Abstract : Treatment success in IVF-ICSI is mainly limited by female age, but differences in ovarian reserve (OR; the remaining pool of oocytes and their quality) between individuals modify treatment prerequisites among women of similar age. OR may be assessed by OR tests (ORTs). READ MORE

5. 3. Constitutive equations for concrete materials subjected to high rate of loading

   Author : Mattias Unosson; Larsgunnar Nilsson; Lars Olovsson; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Continuum mechanics; Numerical analysis; Drop weight testing; Electrical engineering; Elektroteknik;

   Abstract : Continuum mechanics is used to model the mechanical behaviour of concrete structures subjected to high rates of loading in defence applications. Large deformation theory is used and an isotropic elastic-plastic constitutive equation with isotropic hardening, damage and strain rate dependent loading surface. READ MORE

6. 4. On failure modelling in finite element analysis : material imperfections and element erosion

   Author : Mattias Unosson; Larsgunnar Nilsson; Kjell Simonsson; Lars Olovsson; Anders Eriksson; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; element erosion; material failure; material imperfections; crack-tip; Solid mechanics; Fastkroppsmekanik;

   Abstract : This dissertation concerns failure modelling with material imperfections and element erosion in finite element analyses. The aim has been to improve the element erosion technique, which is simple to use and implement and also computationally inexpensive. READ MORE