Search for dissertations about: "plane state stress"
Showing result 1 - 5 of 31 swedish dissertations containing the words plane state stress.
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1. Shear cracks in concrete structures subjected to in-plane stresses
Abstract : After only two years of service, extensive cracking was found in the webs of two light-rail commuter line bridges in Stockholm, the Gröndal and Alvik bridges. Due to this incident it was found necessary to study the means available for analysing shear cracking in concrete structures subjected to in-plane stresses. READ MORE
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2. Experimental characterization and numerical modeling of compression perpendicular to the grain in wood and cross-laminated timber
Abstract : Compression perpendicular to the grain (CPG) of wood is a typical loading situation in timber structures. It has been an extensively studied research topic for decades, due to the highly ductile behavior of wood under such loading, the large variations in mechanical properties, and the relevance of these properties in structural design. READ MORE
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3. Modeling Unsteady flow Effects in 3D Throughflow Calculations
Abstract : The flow field in a transonic multistage compressor is compressible, three-dimensional and highly unsteady and can be predicted in principle by the exact time-accurate Navier-Stokes equations. The high Reynolds number encountered in multistage turbomachinery together with the wall-bounded nature of the flow environment however prevent the use of DNS to solve the exact N-S equations. READ MORE
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4. Wafer-level heterogeneous integration of MEMS actuators
Abstract : This thesis presents methods for the wafer-level integration of shape memory alloy (SMA) and electrostatic actuators to functionalize MEMS devices. The integration methods are based on heterogeneous integration, which is the integration of different materials and technologies. READ MORE
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5. New developments in hydrofracturing stress measurement techniques and a comparison to the HTPF method
Abstract : This thesis describes two hydraulic methods for rock stress measurements; hydraulic fracturing and hydraulic tests on pre-existing fractures (the HTPF method). It includes theories to evaluate stress field information for somewhat extraordinary stress and field situations, experimental investigations and field measurements. READ MORE