Search for dissertations about: "dynamic compaction"
Showing result 1 - 5 of 24 swedish dissertations containing the words dynamic compaction.
-
1. Controlling DNA compaction and the interaction with model biomembranes
Abstract : The studies described in this thesis forms part of a larger collaborative project, Neonuclei, with the objective to design a module for packaging the negatively charged DNA into a ”neonucleus” with transcription competence. There are many applications that require control of DNA compaction, i.e. packaging or condensation. READ MORE
-
2. Improved understanding of sublevel blasting : Determination of the extent of the compacted zone, its properties and the effects on caving
Abstract : Sublevel caving (SLC) is a mass mining method relying on the flowability of the blasted material. The ore is blasted in slices against caved material which is mainly waste rock. The result of the confined blast is greatly influenced by the interaction between the blasted material and the caved material. READ MORE
-
3. Modelling of compaction of metal powder and damage accum ulation due to fatigue in powder materials
Abstract : This thesis addresses powder manufactured (P/M) components, with special attention to the compaction process and to the sensitivity to damage accumulation due to fatigue within powder compacted specimens. Three dimensional simulations of the compaction process have been performed, using an explicit dynamic dilatant finite strain finite element code supplemented with the effects from contact friction within the die, modelled by Coulomb friction. READ MORE
-
4. Discrete element simulation of elasto-plastic shock waves in high-velocity compaction
Abstract : Elasto-plastic shock waves in high-velocity compaction of spherical metal particles are the focus of this thesis which consists of four papers (A-D). The compaction process is modeled by a discrete element method while using elastic and plastic loading, elastic unloading and adhesion at contacts. READ MORE
-
5. Rockfill Pavements on Soft Subsoil - Construction and Compaction
Abstract : Analytical or mechanistic design models are today available, which all require predictable material properties of the materials involved. However, the efficiency of compaction of pavements on soft subsoil is often questioned, since such pavements mostly show lower pavement quality and poorer performance, it seems like the full potential of the fill material not is utilised. READ MORE