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--- wiki:sns:snspro:test_pressure_plastic_container [2017/07/17 09:38] – removed claire
+++ wiki:sns:snspro:test_pressure_plastic_container [2017/07/18 08:10] (current) – created zach
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+~~CLOSETOC~~
+{{TOC:wide}}
+\\
+====== Testing a small pressure plastic container ======
+===== Step 1: Create solid model=====
+The first challenge is turning your surfaces into a single hollow solid.  To hollow out the interior, Rhino   requires you to connect the outside surface to the inside.  Do this with a small hole that will be negligible at analysis time (clipping plane turned on):
+{{ :1.ifffdbif.png?300 |}}
+Create a small cylindrical surface and trim away the pieces that aren't part of the solid's boundary.  Then use Rhino's CreateSolid command to stitch the surfaces into a single solid.
+Run SnS on the resulting solid.
+----
+===== Step 2: Specify material =====
+If your material (e.g., polypropylene) is not one of the built in materials, so you'll have to enter it as a custom material.  Choose [Custom...] from the SnS dialog and enter the material properties for polypropylene that you can find online:
+{{ :2.cdhcjecb.png?400 |}}
+Click [<< Save] and [OK].
+----
+===== Step 3: Apply restraint =====
+In order to run the analysis, the solid must be restrained somewhere.  Click [Add] restraint and select the interior of the hole created earlier:
+ {{ :3.ffhfiaaf.png?300 |}}
+----
+===== Step 4: Applied the load =====
+Manually convert 5 kg/cm^2 to 0.49 MPa.  Click [Add] load, select the 3 interior faces of the container and press Enter.  In the Boundary Load Creator dialog enter your 0.49 MPa pressure, and click [OK].
+{{ :4.bdgbfjde.png?400 |}}
+----
+===== Step 5: Run the analysis =====
+Select desired resolutoin and click [GO!] to begin an analysis run.  Here are the displacement results with 100k elements:
+{{ :5.dhhhaahg.png?500 |}}
+We recommend making several analysis runs at higher and higher resolutions until the results don't change very much between runs.