Simulate Early, Simulate Often... In Rhino
Academic Examples
I attach two examples that are frequently used in engineering courses.
The first one relates to an asymmetric beam where the end rotation is in a clockwise direction rather than what most students would think.
The other example is that of a thick walled vessel subjected to an internal pressure of 100 MPa. The vonmises stress (according to Lame's theorem) along the inner surface is 276 MPa. Would be good to be able to querry the values at specific points rather than rely on the maximum contour values to establish the actual predicted stress along the inner surface.
Normally, this 2nd problem is solved by considering a quarter section and applying symmetric
constraints. A wish list would be one where the direction of the restraint can be specified rather like
the vector loading system.
Regards
William
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Replies to This Discussion
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Permalink Reply by William Tiu on -
Igor
Yes I do teach Rhino. Rhino and Scan&Solve will make my life easier in terms of introducing stress
analysis to our students. Experimentally, we still use photoelastic analysis which gives fringes (or contours) relating to the principal stress differences (sig1-sig2), (sig2-sig3) or (sig3-sig1). Would be great if in addition to the vonmises stress, you can include the above as it would mean that we can do a direct comparison with experimental results. Also would it be possible to show the component stress contours as well. Some experiments that we do involve the use of strain gauges aligned with the x-axis for example and therefore being able to display the sigma-x stress would be handy.
Another feature that will be nice is to be able to show the mesh so that I can discuss the effect of mesh density on the results.
I realise that the level of features included needs to be balanced against ease of use. Later on in the course, we use other FE packages such as ANSYS which requires a relatively steep learning curve due to the numerous available features. The beauty with Scan&Solve is that if you can draw it you can analyse it and therefore we can concentrate on the validation of results against those obtained experimentally and/or from classical solutions.
Regards
William
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Permalink Reply by William Tiu on
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Here is another example. The image on the right is a photograph of a photoelastic image. The fringes relate to the principal difference. Would be great if Scan and Solve can display (sig1-sig2) contours.
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