Essays about: "NASTRAN"

Showing result 1 - 5 of 26 essays containing the word NASTRAN.

  1. 1. Investigation of torsion modes in overhead traveling cranes: : Reviewing the ISO 22980 standard

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Simon Jens; [2023]
    Keywords : Overhead traveling crane; Finite element method; Frequency and experimental vibration analysis; Travers; finita elementmetod; egenfrekvensanalys; experimentell vibrationsanalys;

    Abstract : Overhead cranes and rail mountings in the wall are subjected to vibrations whenlifting equipment. The purpose of this thesis is to review if the minimum frequencyvalue for cranes, according to the ISO 22986:2007 standard is conservative whendesigning overhead traveling cranes. READ MORE

  3. 2. Dynamic Analysis of a Window connected via the Click-In System

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Abhikaran Bhatia; [2022]
    Keywords : Finite Element Modelling; Vibrational Analysis; MSC Nastran; MSC Apex;

    Abstract : It is often needed to predict the behavior of structures. With the helpof an FE model, it is possible to see the motion of the structure. Inthis, Master thesis work time domain analyses were carried out on afinite element model representing a window attached by click-ins. READ MORE

  4. 3. Rotor Dynamic Modeling of Hydropower Rotors by 3D-Finite Element Analysis

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

    Author : Simon Pääjärvi; [2022]
    Keywords : Rotordynamics; Applied Mechanics; Dynamics; Rotor; Finite Element Analysis; Hydropower; Solid Mechanics; Energy Production;

    Abstract : By using the rotor dynamic capabilities of Simcenter Nastran Rotordynamics, an eigenvalue analysis of 3D-finite element models of the Jeffcott rotor and the overhung rotor were conducted and compared to the results with beam-based, lumped parameter models. The first two critical speeds of the Jeffcott rotor were estimated with variations of 3. READ MORE

  5. 4. Creation of a Finite Element Model andSystem Analysis for the Low and HighFrequency Cryogenic Telescopes of theSpace Mission LiteBIRD

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Matias Rittatore Texeira; [2022]
    Keywords : FEM; FEA; mesh model; CMB; IRAP;

    Abstract : The Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection (LiteBIRD) is a Japan Aerospace Exploration Agency (JAXA)-led Strategic Large-Class mission designed to search for the existence of the primordial gravitational waves produced during the inflationary phase of the early Universe, through the measurement of their imprint onto the polarization of the Cosmic Microwave Background (CMB). It is an international collaboration, with European Union (EU) operations being coordinated by France. READ MORE

  6. 5. Concept development and design ofretractable hydrofoil systems

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Andreas Lundin; Richard Löfstedt Eriksson; [2021]
    Keywords : Design; electric boat; hydrofoil; retraction mechanism;

    Abstract : The Swedish Sea Rescue Society (SSRS) is a non-profit organisation which performs themajority of rescue missions on Swedish waters. SSRS together with many other companies arecurrently under development of a novel boat design which is battery powered. READ MORE