Search for dissertations about: "continuum modeling"

Showing result 1 - 5 of 73 swedish dissertations containing the words continuum modeling.

2. 1. Continuum modeling of paperboard for the mechanical response of converting processes

   Author : Kristofer Robertsson; Hållfasthetslära; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paperboard; Continuum modeling; Converting processes; FEM simulations; Finite strain theory; Damage modeling; Rate-dependent; Creasing and folding; Out-of-plane experiments;

   Abstract : Paperboard is a thin and lightweight material made of cellulose fibers and it is an important component in packaging material where it provides stiffness and rigidity. The scope of this work is the development of continuum models, and its numerical treatments, for simulating the processes of converting paperboard into packages. READ MORE

4. 2. Continuum modeling of the mechanical properties of paperboard

   Author : Eric Borgqvist; Hållfasthetslära; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; director vectors; polyconvexity; plastic spin; creasing; anisotropy; fiberous materials; Continuum Modeling; Paperboard;

   Abstract : Continuum based elasto-plastic models for paperboard have been established in the work herein. The thesis begins with an introductory section that describes some of the background of the problem and gives some more motivation for the modeling choices made in the appended papers. READ MORE

5. 3. Modeling Residual Stress Fields in Soft Tissues : with Application to Human Arteries

   Author : Tobias Olsson; Linköpings universitet; []
   Keywords : Continuum Mechanics; Modeling; Residual Stress; Soft Tissues; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : Biomechanics or Mechanics of Biology comprises many different fields. This thesis deals with soft tissues or living tissues and the fact that these materials live in a pressurized environment. This means that an unloaded tissue may not be stress free. The stress in an unloaded body is usually called residual stress. READ MORE

6. 4. Continuum modeling of particle flows in high shear granulation

   Author : Per Abrahamsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High shear granulation; parameter study; resolution dependence; continuum modeling; kinetic theory of granular flow; granular flow;

   Abstract : High shear granulation is an important process in the pharmaceutical industry. The aim of the process is to produce granules with specific properties, like size and hardness, from powder mixtures. The properties of the granules are determined by the flow field in the mixer. READ MORE

7. 5. Multiphase continuum modeling of wood : A hybrid mixture theory approach

   Author : Winston Mmari; Björn Johannesson; Lynn Schreyer; Linnéuniversitetet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Moisture transport; Coupled heat and moisture; Over-hygroscopic; Hybrid mixture theory; Mixture theory; Swelling; Hygro-mechanical; Non-linear elasticity; Large deformation; Phase field crack model; Anisotropic cracking; FEM; Numerical model; Norway spruce; Wood; Porous media; Forestry and Wood Technology; Skog och träteknik;

   Abstract : Wood has been used as a construction material for a very long time. The development of efficient industrial production processes of wood has expanded the use of the material with the introduction of new products, such as engineered wood products. READ MORE