Sökning: "friction sleeve"

Hittade 4 uppsatser innehållade orden friction sleeve.

  1. 1. Quality of CPTU : Analyses and comparison of data from commercial actors in Stockholm/Mälardalen

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Caesar Kardan; [2015]
    Nyckelord :CPT; CPTU; cone penetrometer; cone resistance; friction sleeve; pore pressure; undrained shear strength; conrad; CPT; CPTU; sond; spetsmotstånd; mantelfriktion; portryck; odränerade skjuvhållfasthet; conrad;

    Sammanfattning : CPTU is one of the most sophisticated geotechnical investigation methods. However, there is a large amount of uncertainties related to this method. The uncertainties depend on different types of factors, for instance lack of accuracy in performance and equipment. LÄS MER

  3. 2. A study of the correlation between soil-rock sounding and column penetration test data

    Uppsats för yrkesexamina på grundnivå, KTH/Jord- och bergmekanik

    Författare :Johan Fransson; [2011]
    Nyckelord :soil-rock sounding; column penetration; correlation;

    Sammanfattning : Lime-cement columns have been used in Sweden to improve poor soil conditions since the 1970’s. The method is inexpensive and flexible, but is difficult to test since the columns are manufactured in-situ. Many test-methods have been developed for testing the column strength during the years. LÄS MER

  4. 3. Finite Element Modeling of Rubber Bushing for Crash Simulation - Experimental Tests and Validation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik

    Författare :Oscar Jesus Centeno Gil; [2009]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Until recently, the general level of detail in full car crash models has not allowed a physical modeling of rubber bushings with solid elements. This is partly because of the difficulty in modeling the complex characteristic of rubber, but also due to limited understanding of the mechanical properties of rubber materials. LÄS MER

  5. 4. Stress Analysis of PTFE Sleeves in Industrial Valves

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Maskinteknik (CI); Lunds universitet/Byggnadsmekanik

    Författare :Daniel Clarhed; [2008]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The polymer PTFE has become an important and widely used sealing material in the valve industry in recent years. It provides good strength and low friction, but it is sensitive to stress relaxation, i.e. loss of stiffness with time. LÄS MER