Essays about: "non-linear material models"

Showing result 21 - 25 of 46 essays containing the words non-linear material models.

  1. 21. Finite Element Modelling and Parametric Studies of Semi-Closed Thin-Walled Steel Polygonal Columns - Application on Steel Lattice Towers for Wind Turbines

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Bona Ryan; [2017]
    Keywords : Lattice tower; Thin-walled element; Semi-closed polygonal section; Finite element analysis; Parametric study; Buckling; Python script; Matlab script; Eurocode 3; Factorial design;

    Abstract : The trend of structural engineering in the recent years is toward the use of lighter and moreeconomical structural elements. In steel construction, peculiarly, thin-walled structural elements arebecoming more popular and have a growing importance. READ MORE

  3. 22. Some deviations from linear dynamics due to more accurate damping models

    University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Jakob Sjöstrand; [2017]
    Keywords : Bilinear hysteresis; Standard linear solid; SLS; Linear Dynamics; Non-linear Dynamics; Technology and Engineering;

    Abstract : Damping is present in all dynamic systems. In one way or another energy is being dissipated in the system. To capture this aspect of reality in a computational model is a difficult task. A common simplification is to assume that the damping is of a linear viscous nature. READ MORE

  4. 23. Modeling of nailed timber connection : Displacement path dependency in sheathing-to-framing connections

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Winston Mmari; [2017]
    Keywords : Displacement path; Sheathing-to-framing; Beam-on-foundation; Embedment properties; Connector Elements;

    Abstract : Connections in wood have been investigated and advanced ever since the ground-breaking work of Johansen in the early nineteenth century. Nevertheless, not much investigation has been undertaken on the existence of load-displacement path dependency in a sheathing-to-framing connection. READ MORE

  5. 24. Shear Stiffness and Capacity of Joints Between Precast Wall Elements

    University essay from KTH/Betongbyggnad

    Author : Semiha Kaya; Delvin Salim; [2017]
    Keywords : Non-linear finite element analysis; prefabricated concrete elements; shear stiffness;

    Abstract : In this thesis an investigation of the shear stiffness and capacity of joints between pre- fabricated concrete elements regarding to different material properties is reported. Two different models of shear key joints, connected to prefabricated walls, were cre- ated in the non-linear finite element software, ATENA 3D, with the aim to estimate a realistic behaviour of the joints regarding to the external loads. READ MORE

  6. 25. Towards the measurement of two independent viscoelastic functions using spherical indentation

    University essay from KTH/Hållfasthetslära (Inst.)

    Author : Hassan Mohammad; [2016]
    Keywords : ;

    Abstract : Instrumented indentation is a promising testing technique for obtaining the time dependent viscoelastic properties of bitumen and bitumen-based mastics. It offers several advantages: controlling the length scale of measurement and thus could be used in multi-scale modelling of asphalt, the possibility of in-situ tests and the minimal requirements of sample preparation. READ MORE