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  1. 1. Approximating Damping Coefficient of Bolted Joints using the Finite Element Method

    University essay from KTH/Hållfasthetslära

    Author : Abhiroop Chatterjee; [2023]
    Keywords : ;

    Abstract : Bolted joints are important due to their energy dissipation property in structures,but the damping mechanism is also highly nonlinear and localized. The goal ofthis thesis is to develop an accurate method for modeling bolted joint dampingin large structures using finite element (FE) software. READ MORE

  3. 2. Synthesizing of brain MRE wave data

    University essay from KTH/Medicinsk avbildning

    Author : Maryia Yuliuhina; [2023]
    Keywords : MR elastography; brain MRE; synthetic data; computational modeling; shear wave elastography; MR-elastografi; hjärn MRE; syntetiska data; beräkningsmodellering; skjuvvåg elastografi;

    Abstract : Magnetic resonance elastography (MRE) is an imaging technique that allows for non-invasive access to the physical properties of body tissues. MRE has great potential, but it is difficult to conduct research due to the time-consuming estimation of stiffness maps, which could be speeded up by using neural network. READ MORE

  4. 3. Design, Modeling, and Testing of a Force Feedback Haptic Device for Simulated Robot Interaction

    University essay from Linköpings universitet/Institutionen för systemteknik

    Author : Patrik Lindström; [2023]
    Keywords : Force Feedback; Impedance Control; PD-gain; Dynamic Behavior; Closed-chain; Master-Slave; Parallel Manipulator; Kinematics Redundancy; Mass-Spring-Damper; Position Control; Current Control; Modeling; Design; Joints; Delta robot; Differential Equations; External Torques; Kinematics; Forward Kinematics; Inverse Kinematics; Dynamic Matrices; Jacobian; URDF; Haptics; Haptic Device; Solidworks; CAD; Maxon Motors; EtherCAT; Beckhoff;

    Abstract : Haptic feedback is a growing phenomenon that incorporates the sense of touch through tactile sensations such as vibrations, electrical signals, air pressure, and sound waves or through force feedback, which employs torques and/or forces to replicate the pressure and weight of a simulated object. Utilizing haptic technology establishes a communication bridge between the user and the technical component, enhancing the user's understanding of the technical component's surroundings. READ MORE

  5. 4. Characterization of Kelvin Cell Cored Sandwich Structures with Analysis and Experiments

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Sabahattin Bora Günay; [2023]
    Keywords : Kelvin Cell; Sandwich Structure; Space Structures; Three Point Bending Test; Structural Stiffness; Kelvin-cell; smörgåsstruktur; rymdstrukturer; trepunktsböjningstest; strukturell styvhet;

    Abstract : In order to satisfy the mechanical requirements for space structures, achieving lightweight designs is of the greatest significance. The primary focus of this study is the utilization of Kelvin cell core in the design of sandwich structures for space applications. READ MORE

  6. 5. Effective shear stiffness of cross-laminated timber : Comparison between numerical and analytical approaches

    University essay from KTH/Bro- och stålbyggnad

    Author : Therese Badrous; Las Muradi; [2023]
    Keywords : ;

    Abstract : The increasing importance of sustainability has led to a focus on smart solutions for energy consumption and materials. Cross-laminated timber (CLT) has gained attention as a sustainable alternative in construction, offering high strength, stiffness, and dimensional stability. READ MORE