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Item Information   Holdings       More by this author     Knowles, John Alexander     Subjects     Microsoft Visual BASIC.     Structural frames     BASIC (Computer program language)     Strains and stresses     Structural analysis (Engineering)     MSST Project.     Browse Catalog     by author:      Knowles, John Alexander       by title:      First and second ord...         MARC Display

First and second order analysis of a steel gable frame using Visual Basic programming / by John Alexander Knowles. by Knowles, John Alexander Subjects Microsoft Visual BASIC.   Structural frames   BASIC (Computer program language)   Strains and stresses   Structural analysis (Engineering)   MSST Project. Description:  222 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Dr. Richard DeVries Committee members: Dr. Douglas Stahl, Dr. Hans-Peter Huttelmaier Introduction -- Background and literature review - Using the gable frame program -- Results and program verification -- Conclusions and recommendations -- A: Visual Basic code -- Gable frame program results -- C: MathCAD worksheets -- D: Commercial software results. The purpose of this capstone design project is to develop a software program with Visual Basic (VB) programming language that analyzes the forces and deflections of a steel gable frame. The BV program finds the shear, moment, and axial forces in a four-member gable frame using either a first order static analysis or a second order single step Euler method. The results were compared to a MathCAD sheet and to the commercial software RSTAB, which uses the Timoshenko non-linear method for its second order analysis. The results for the first order analysis were identical between the VB program, MathCAD sheet, and RSTAB except for a 0.1% difference in moment. Approximating uniformly distributed loads with nodal point loads causes this difference. The second order results were similar for a practical building frame. The comparison between the VB program and RSTAB produced a 4.3% difference for global deflections, 7.8% difference for bending moments, and 6.1% for support reactions. For impractical building frames with large deflections, the results were also different (3.5% difference for global deflections, 3.7% difference for bending moments, 3.1% for support reactions, 9.8% for axial forces, and 3.3% for shear forces). The difference between the VB program and RSTAB can be attributed to the second order analysis method, Timoshenko (RSTAB) versus Euler method (VB). Also the VB program rotating loads on the deformed geometry causes result differences. The second order analysis results were identical between VB and MathCAD because they both used the Euler method.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .K617 2010 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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