Advanced search

Showing result 1 - 5 of 10 essays matching the above criteria.

1. 1. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

   University essay from KTH/Hållfasthetslära

   Author : Ludvig Dahlin; Ebba Larsson Regnström; [2022]
   Keywords : FEM; Finite element method; bicycle helmet; impact modelling; solid mechanics; FEM; Finita element-metoden; cykelhjälm; islagsmodellering; hållfasthetslära;

   Abstract : The aim with this master thesis was to set up a FE-simulation of an impact test of a bike helmet in LS-DYNA that correlates well with the peak acceleration score of a real life impact test. Furthermore, a parametric study has been performed in LS DYNA to investigate the robustness of the model, as well as to see which parameters have a great influence on the peak acceleration score. READ MORE

3. 2. Analysis of the Potential of Different Foam Materials in Face Protection to Reduce the Risk of Concussions in Ice Hockey

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Annika Neumann; [2021]
   Keywords : Ice Hockey Jaw Protection; FEM; Concussion; Foam;

   Abstract :  Ice hockey players are at a high risk to sustain a concussion. Most of the concussion-inducing hits are to the jaw region, nevertheless, most players do not wear any protective gear shielding the jaw. READ MORE

4. 3. Virtual testing of self-piercing rivet connections

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Daniel Andersson; Fredrik Saliba; [2020]
   Keywords : FEM; SPR; self-piercing rivets; self piercing rivets; LS-dyna; Explicit FEM; lap-shear; cross-tension; KS2; r-adaptivity; 2D axisymmetric; axisymmetric;

   Abstract : The automotive industry is currently trying to replace the conventional steels to lightweight materials such as aluminum or carbon fiber to meet all stricter emission targets. When using such materials, traditional joining methods, such as spot welds, could be difficult to use. Therefore, more focus has been put on self-piercing rivets (SPR). READ MORE

5. 4. Fluid-Structure Interaction; Numerical Modelling andExperimental Comparison

   University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Author : Johan Lindgren; Hannes Karlsson; [2017]
   Keywords : Fluid-Structure Interaction FSI LS-DYNA mat_acoustic model; Technology and Engineering;

   Abstract : The purpose of this thesis is to investigate the effects of fluid-structure interaction on a submerged oscillating structure. It is to be determined whether it is possible to model such effects with acoustic fluid elements in LS-DYNA using Mat\_Acoustic. READ MORE

6. 5. Finite Element Modeling of Skull Fractures : Material model improvements of the skull bone in theKTH FE head model

   University essay from KTH/Skolan för teknik och hälsa (STH)

   Author : Frida Andersson; [2016]
   Keywords : ;

   Abstract : The main aim of this project was to develop a model for predicting skull fractures of a 50th percentile male, using a finite element head model developed at the Neuronics department of KTH, Royal Instituteof Technology. The skull bone is modeled as a three layered bone, where the outer and inner tables are modeled as shell elements, while the diploë is modeled by two layers of solid elements. READ MORE