To update, it works! Got more precise in the displacement measurements, added more data points, and calculated E correctly based on a unit width of mesh and then used an area of 1 (everything is being calculated per foot of width). A linear curvefit was applied to the load/elongation data...
Another complicating factor is the nature of the mesh. It is a 3D woven, interlinked product that yields a non-linear E profile in the initial loading as the mesh seats. I was attempting to compensate by starting with the mesh under an initial preload to get into the linear E range...
Hello all, the test fixture is a frame made of 3" channel iron that will hold a 16' long sample, 1 ft wide. The mesh is mounted flush to the bottom of the frame and the frame is laying on the floor. The mesh is anchored to one end of the frame, the other is attached to a horizontally floating...
Thanks again for all the thought you three have put in to this! I have tried the new equations but I am still not getting a usable number from them. I am using the MathCad root function to solve for ymax. It may be me, don't know so here is some actual numbers. Maybe you can prove me wrong...
Thanks for your responses. Unfortunately, the pretensions are not a significant percentage of the mesh strength. The meshs are typically rated above 1000 #/ft tensile and can withstand manys times that before failure. This could exert some tremendous forces on a building. To help keep the...
In the previous thread (404-60468) EnglishMuffin cited the equation ymax= L*(3*w*L/(64EA))^(1/3) to determine sag of a horizontal extensible cable whose length equals the span from Roark's formulas. He also proposed an equation where the cable is shorter than the span as...
