Sökning: "Parametric modelling"

Visar resultat 16 - 20 av 113 uppsatser innehållade orden Parametric modelling.

  1. 16. Multibody modelling of the vibrations in an aircraft engine

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Charly Mollet; [2022]
    Nyckelord :Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

    Sammanfattning : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. LÄS MER

  3. 17. An investigation of the design of cylinderical steel tanks modelled according to EN14015 and according to the Eurocodes

    Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

    Författare :Yonas Gebre; [2022]
    Nyckelord :Keywords: Steel tank; Wind; Snow; FEM; Shell buckling; Non-linear analysis;

    Sammanfattning : Abstract Storage tanks are above or below ground vessels for storing chemicals, petroleum and other liquid products. Above ground vertical cylindrical shells are typically thin walled structures prone to buckling and lose their stability especially when they are empty or have lower fluid level due to external loads. LÄS MER

  4. 18. The Extended Maximum Likelihood Estimation for Monotone Probability Mass Function with Application using Forensic Data

    Kandidat-uppsats, Lunds universitet/Matematisk statistik

    Författare :Tiancheng Ma; [2022]
    Nyckelord :Statistical Inference Statistics Maximum Likelihood Estimation Non-parametric Estimation; Mathematics and Statistics;

    Sammanfattning : This paper presents solutions to the modelling of frequency data of species labels, but the data is incomplete in the sense that some rarely-occurring species labels give zero observed frequency. The data can be modelled by a monotone probability function with parameters to be estimated, and yet, due to the order constraints and the incomplete data, using conventional parameter estimation methods will cause trouble. LÄS MER

  5. 19. Simulation of load capacity of 3D printed concrete patterns

    Master-uppsats, KTH/Betongbyggnad

    Författare :Magnus Burton; Karolina Näsén; [2022]
    Nyckelord :;

    Sammanfattning : Three-dimensional concrete printing (3DCP) is a technology which has rapidly developed in recent years. The technology is based on a layer-by-layer technique where models are designed in a 3D software program and printed by a robot. Unlike conventional concrete, 3DCP has stricter material requirements due to the absence of formwork. LÄS MER

  7. 20. Parametrisk modellering av pålgrupper: Koppling mellan Grasshopper och Sofistik

    M1-uppsats, KTH/Byggteknik och design

    Författare :Kimm Nordvall; Mikael Stenberg; [2022]
    Nyckelord :FEM; Finite elements; Parametric modelling; Sofistik; Grasshopper; Rhinoceros; Piling; FEM; Finita element; Parametrisk modellering; Sofistik; Grasshopper; Rhinoceros; Pålgrundläggning;

    Sammanfattning : Pålgrundläggning är en vanlig metod vid grundläggning där sämre markförhållanden råder. För broaroch andra anläggningskonstruktioner måste stora laster tas i beaktande, både horisontella ochvertikala. LÄS MER