We recently had a requirement to determine the change in direction of the principal stress between two load cases. Specifically, we were modeling the grout between a pile and pile sleeve in a removal operation. The sequence of removal was: Remove structure above waterline. This reduces the stress but probably doesn't change the principal stress [...]
Luminaires with a high density of LEDs will provide a lot of light with high lumens per Watt but about half of the Watts will be dissipated as heat. Engineering a fixture that provides a heat path comprised of high thermal conductivity materials such as aluminum is an easy but not necessarily cost effective solution. [...]
A client requested help creating attractive polar plots. I assumed that we could use matplotlib to help them. The code below produced nice plots. import matplotlib.pyplot as P import matplotlib from matplotlib import rc rc('text', usetex=True) rc('font', family='serif') P.clf() sp = P.subplot(1, 1, 1, projection='polar') sp.set_theta_zero_location('S') sp.set_theta_direction(-1) plot1=P.plot(measured_angle, measured_data, color='b') p1 = P.Rectangle((0, 0), 1, [...]
A recent project involved the estimation of the elastic modulus of grout from the compressive strength. When performing an analysis on a to-be-built offshore structure with grouted pile-in-sleeves, the compressive and tensile strength, elastic modulus, and Poisson ratio can be looked up on the datasheet or supplied by the grout vendor. But this project involves [...]
$sudo aptitude install csh alien $sudo mkdir /opt/abaqus $sudo /media/Abaqus6111/setup -nosystemchecks # Fix compiz bug $alias abaqus='XLIB_SKIP_ARGB_VISUALS=1 abaqus' # Install some dependencies $sudo apt-get install libjpeg62 $sudo aptitude install libstdc++5 The compiz bug fix was found here Update: Although there is always a graphical artifact on my screen, CAE crashes less often than on Windows.
Building parametric models in Abaqus CAE may seem trivial at first blush, simply set CAE to output ids instead of masks and insert a little python code where needed. After spending many hours developing the application, you deploy and all the engineers are happy. Until you upgrade Abaqus to the next release. I have found [...]
Jack-up installing turbine on mono-pile foundation Offshore wind turbine foundations are designed to owner and jurisdictional specified codes. Typically, North Sea installations would follow Offshore Standard DNV-OS-J101, Design Of Offshore Wind Turbine Structures. Grouted connections are typically used to connect the pile to the sleeve in mono-pile and other constructions. Section 9 of DNV-OS-J101 covers the design requirements for grouted [...]
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