This problem provides a comparison of the stiffness method used in RISA-3D with the joint equilibrium method used in the text. For this solution Q is taken as 10 kN and a is taken as 2 meters (standard metric units). The text lists Q as the load magnitude and a as the panel width. This particular problem is presented as example 3.7 on page 171 of Structural Analysis and Design by Ketter, Lee, and Prawel. The members are pinned at both ends, thus they behave as truss elements. This problem is a typical truss model (please see Figure 1.1 below). This document contains problems that have been verified in RISA-3D version 11.0.1 and RISA-2D version 11.0.
RISA 3D NO SHAPES FOUND DESIGN RESULT VERIFICATION
Therefore, we have created RISA-2D model files (.r2d files) for each two-dimensional verification problem and have included them in the C:\RISA\Examples folder of your RISA-2D installation. If you want to run any of these problems yourself, just read in the appropriate data file and have at it.ĭue to the similarities in the two programs, this document can also be used to verify RISA-2D.
RISA 3D NO SHAPES FOUND DESIGN RESULT INSTALL
When you install RISA-3D these data files are copied into the C:\RISA\Examples directory.
The files are Verification Problem 1.r3d for problem 1, Verification Problem 2.r3d for problem 2, etc. The data for each of these verification problems is provided. There are instances where SAPIV results have been proven to be incorrect. Additional testing and hand calculations are used to verify which solution (if either) is correct. If discrepancies occur between the RISA-3D and the SAPIV results during testing, we dont automatically assume SAPIV is correct. The likelihood that both programs will give the same wrong answers is considered extremely remote. The reasoning is if two or more independently developed programs that use theoretically sound solution methods arrive at the same results for the same problem, those results are correct. The original SAPIV program is still the basis for several commercial programs currently on the market (but not RISA-3D). By well established we mean programs that have been in general use for many years, such as the Berkeley SAPIV program. The RISA-3D solutions for each of these problems are compared to either hand calculations or solutions from other well established programs. The input for these test problems was formulated to test RISA-3Ds performance, not necessarily to show how certain structures should be modeled. These test problems should not necessarily be used as design examples in some cases the input and assumptions we use in the test problems may not match what a design engineer would do in a real world application. In this verification package we present a representative sample of these test problems for your review. We at RISA Technologies maintain a library of dozens of test problems used to validate the computational aspects of RISA programs. Verification Overview Verification Methods Verification Problem 21: Aluminum Bending Members. Verification Problem 20: Aluminum Compression Members. Verification Problem 19: AISC 14th Edition Combined Forces and Torsion. Verification Problem 18: AISC 14th Edition Shear Members. Verification Problem 17: AISC 14th Edition Bending Members. Verification Problem 16: AISC 14th Edition Compression Members. Verification Problem 15: AISC 14th Edition Tension Members. Verification Problem 14: Solid Elements Comparison. Verification Problem 13: Projected Loads. Verification Problem 12: P-Delta Analysis. Verification Problem 11: Tapered Hot Rolled Steel Frame Design. Verification Problem 10: Wood Design Calculations. Verification Problem 9: Dynamic (Response Spectra) Analysis. Verification Problem 8: Plate Deflections.
Verification Problem 6: Curved Member Forces. Verification Problem 5: Hot Rolled Steel Design Calculations. Verification Problem 4: Cantilever with Thermal Loads. Verification Problem 3: Hot Rolled Steel Frame Member Loads. Verification Problem 2: Cantilever Deflection. Verification Problem 1: Truss Model Axial Forces Comparison. Technologies, LLC makes no guarantees concerning accuracy of the information found here or in the use to which it may be put. However, please be aware that errors may exist in this publication, and that RISA We have done our best to insure that the material found in this publication is both useful and accurate. No portion of the contents of this publication may be reproduced or transmitted in any means without the express written permission of RISA Technologies, LLC.
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