Choose Units, i.e., MKS or FPS. For this problem, we will use N, m and seconds as units.
Make Rectangular footing in Sketch in Parts. Give it thickness as we want to model it as Solid Plate. Take footing dimension as 2x2x0.5
Define Material as Concrete density (23.60) (note: correct this value when you practice it to 23.60e3), Elasticity (20e6) and Poisson’s ratio (0.2).
We need to partition the plate so that we get point for application of load in centre. Tools>Partition in Part Module.
Assign instance in assembly and then define interaction of Elastic Foundation in interaction module. Give value of Spring as 1. Note that the purpose of taking simplified value of load, dimension and spring is to get easy to interpret value of deflection to verify calculations.
Mesh the footing from mesh module.
Define load application step and apply concentrated load of 4 in negative 3-direction.
Create Job and run the analysis.
Open Result and check maximum deflection. As applied pressure is 4/4 = 1 and resisting stiffness per area is also 1 so from F = K*x, the resulting deflection will be 1 units. Again note that such values are pre-decided to have an easy cross-check on calculations.
Check plots and deflection contour. And save the database cae file.
CAE file of abaqus can be downloaded from: CAE file
Following are steps for downloading seismogram from IRIS Wilber3 for any earthquake event from any station:
You can view recent requests to download or Load Event Data.
Select Past 12 months, M4.0+ in combo box of Load Event Data and Specify start and end date as 2015-10-26
Scroll down to select event at date (utc) 2015-10-26 09:09:42 and click it to open.
You can check coordinates, date, depth, and Related event page. Select the station for which you want to download data. Use map to zoom for stations.
In the list below, click the station for which you want to download data.
Select AAK. A popup will appear showing seismogram, phase arrival, time range. You can also select the instrument to preview its data. You can change time range to customize the seismograph. Close this pop up.
With station AAK selected, press Show Record Section in side pan on right to see detailed seismograms.
Press Request Data button, give your desired time range, data output format (SAAC or miniseed), bundle type, and fill the request info along with your email to let know you when the download file is ready.
Press Submit button and check save these settings as default.
CMU Sphinx, also called Sphinx in short, is the general term to describe a group of speech recognition systems developed at Carnegie Mellon University. These include a series of speech recognizers (Sphinx 2 – 4) and an acoustic model trainer (SphinxTrain). Here are brief steps for compilation and usage of CMU Sphinx in Debian.
This program calculate data of beam, col and slab for ramp. It creates CSV file that can be used in sap2k or any FE package. It requires gnuoctave/matlab to work. You can download it from here:
spiral.m = calculate and plot ramp in octave/matlab
beams.m = calculate data of beam for ramp to be used in FE
cols.m = calculate data of columns for ramp to be used in FE
slabs.m = calculate data of triangular slab for ramp to be used in FE
Circle plot requires x = r*sin(t) and y = r*cos(t) where t increments from 0 to any given radians. If we increment z from 0 to given height h with some increment, and plot with x and y of a circle, we will get a 3D spiral curve. Two such spiral curve can be used to calculate data point for ramp. Below is the sample code. You can run this by copy and paste directly in gnu octave or matlab or create script out of it.
Spiral Ramp Code
By using, beams, cols and slabs script function, csv data will be created that can be formatted as per any finite element code. Here I formatted it for sap2K.
A spreadsheet with sample sap2k format is attached with this code. Below is video tutorial explaining usage of this code:
Followings are the lecture series on Project Planning, Management and Engineering Economics for Spring 2015. Main pdf lectures from 03 to 10 are provided by Dr. Prof. Syed Muhammad Ali. While the rest of lectures, further readings and matlab m files are provided by Me.
Please note that these are in preparation. Most of the content collected from various sources over internet.