Recent content by NumericalFEA

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    Differential Geometry book with tensor calculus

    Here is one that contains the information you requested plus a lot of computer codes (on CD-ROM) that you could run: https://www.amazon.com/dp/0646930818/?tag=pfamazon01-20 The authors of the book have also a webpage devoted to it: http://members.ozemail.com.au/~comecau/quad_shell.htm
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    Analyzing Support Conditions for Tables/Tripods

    Try this: one leg is completely "fixed" (presumably you are dealing with a plate-and-rods model, so each node has six degrees of freedom), the other legs are not allowed to move in the vertical direction, but free to move otherwise. That's the simplest approach that would ensure that the model...
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    Static structural analysis on a solid sphere?

    I am glad to hear that. Good luck !
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    Analysis General texts on systems of partial differential equations?

    https://www.amazon.com/dp/0486664228/?tag=pfamazon01-20
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    Other Self-Studying ODE: Is It Possible in 4 Weeks?

    If you need just a course that would give you a "taste" of the ODE, without too much theoretical stuff, but with a lot of insights into the subject, you can try the following: https://www.amazon.com/dp/0534385141/?tag=pfamazon01-20 (there are also other editions of that book; and also, there are...
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    Applied Book recommendations on geometrical methods for physicists

    Differential geometry is a huge subject; different branches of physics use different parts of that subject. There is a variety of books covering this topic, as stated by one of our colleagues above. In case if you are looking for really working algorithms and software implementing methods of...
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    Solve Plane Elasticity w/ Airy Stress Function

    In the third case, the body is not in equilibrium (unless some kinematic boundary conditions are applied), because it can rotate anticlockwise. In other words, this problem falls outside of the scope of the mechanics of deformable solid bodies. .
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    How Do J.B. Johnson and Tetmajer's Buckling Formulas Differ?

    The most comprehensive ever resource on buckling in the whole internet is there: shellbuckling.com
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    Static structural analysis on a solid sphere?

    Аs long as the load is symmetrical with respect to some plane passing through the center point, you can work with just a half of the sphere. In that case, the center point will be exposed. However, there is also a very important thing to do: each of the nodes that belong to that plane of...
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    Deflection of an aluminium plate

    Analytical solutions for large displacements mean that the relations between strains and deflections are non-linear. From the mechanical point of view, when the edges of the plate are jammed, non-linearity naturally leads to the fact that membrane (tensile) forces appear, which significantly...
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    Static structural analysis on a solid sphere?

    When there are no constraints applied, the global stiffness matrix becomes singular, so no solution can be obtained. If you know for sure that your solid sphere is in equilibrium and if you believe that the loads' distribution is such that the geometrical center point of the sphere remains...
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    Deflection of an aluminium plate

    You have a geometrically non-linear problem, i.e. the membrane forces cannot be ignored, since they contribute (significantly) to the deflections and to the overall stress fields. The way to go is to use a commercial-quality FEA system.
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    Is this steel structure stable/ready to build?

    The problem with this structure is that near the point where two steel tubes are anchored to the concrete foundation, very large local internal stresses will appear, due to wind from the left. That may have two consequences: (a) local stresses in the concrete would be so high that the concrete...
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    Deflection of an aluminium plate

    There is no simple formula for that problem.
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    Deflection of an aluminium plate

    One way is to use an analytical solution; you would probably find some useful formulae in the works of Stephen Timoshenko, who published several books on the topic. Another approach would be to use a finite element program, for example like the one described below (the link also contains an...
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