Sökning: "stiffness matrix"
Visar resultat 1 - 5 av 48 uppsatser innehållade orden stiffness matrix.
1. A personalized quasi-passive ankleexoskeleton using human-in-the loop optimization approaches
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Passive ankle exoskeletons have been proven to successfully decrease muscle demand for walking. The movement of the user’s ankle drives a mechanical clutch and spring, which eventually stores and returns mechanical energy to the user. LÄS MER
2. Size effect in wood : Characterization of mechanical properties using digital image correlation method
Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Tillämpad mekanikSammanfattning : As a natural composite material, wood exhibits complex structural char-acteristics and diverse behavior under compression and tensile forces. Itsanisotropic nature results in mechanical properties that vary depending onthe load direction along its longitudinal, tangential, and radial grains. LÄS MER
3. 3D printing of ceramic composites with improved mechanical strength
Master-uppsats, Uppsala universitet/Tillämpad materialvetenskapSammanfattning : AbstractCeramic materials have a wide range of applications in many fields, but their fragility limits theiruse in high strength and high stress environments. Therefore, by combining ceramic materialswith reinforcing agents, their mechanical properties can be improved. LÄS MER
4. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanikSammanfattning : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. LÄS MER
5. Towards a sustainable substitute for Acrylonitrile Butadiene Styrene (ABS) in automotive industry
Master-uppsats, KTH/Fiber- och polymerteknologiSammanfattning : Syftet med detta examensarbete var att utveckla ett hållbart ersättningsmaterial till akrylnitrilbutadienstyren plast (ABS), genom att applicera principerna för grön kemi och teknik. ABS är en icke-nedbrytbar plast som till exempel används i slagtåliga produkter för hyttinteriörer. LÄS MER