Papers by John Klein
ANSYS APDL tutorials handout 3/3, 2018
Brief discussion of outputs • The nodal solutions are the displacements (and rotations if you hav... more Brief discussion of outputs • The nodal solutions are the displacements (and rotations if you have beams). These are the primary degrees of freedom (ANSYS lists these under the 'DOF Solution'). Constrained nodes result in nodal reactions in the form of forces (and moments with beams). Reactions may be considered part of the nodal solution.
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ANSYS is a finite element analysis program capable of handling problems in areas such as structur... more ANSYS is a finite element analysis program capable of handling problems in areas such as structural mechanics, fluid and heat conduction, electromagnetism, etc. This handout is consistent with ANSYS 17 as installed in CME lab. Other versions may vary slightly. To open ANSYS in the CME lab: 1. From Start menu, and programs, locate the ANSYS 17 folder. 2. Click on "Mechanical APDL Product Launcher". 3. In the window that opens, under License tab, select "ANSYS Academic Teaching Advanced".
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ANSYS APDL tutorials handout 1/3, 2018
ANSYS APDL example problems. This is a step-by-step tutorial how to set up and solve simple teach... more ANSYS APDL example problems. This is a step-by-step tutorial how to set up and solve simple teaching problems using the GUI. Some problems are taken from the textbook A First Course In The Finite Element Method by Daryl Logan. The solution in ANSYS matches the solution by hand from the textbook.
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Lecture notes (Part 3 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of I... more Lecture notes (Part 3 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of Illinois at Chicago taught by Professor Craig Foster.
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Lecture notes (Part 2 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of I... more Lecture notes (Part 2 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of Illinois at Chicago taught by Professor Craig Foster.
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Lecture notes (Part 1 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of I... more Lecture notes (Part 1 of 3) for Nonlinear Finite Element Analysis (NFEA) taken at University of Illinois at Chicago taught by Professor Craig Foster.
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Numerical determination of the temperature distribution T(x) and fin heat transfer rate qf of a c... more Numerical determination of the temperature distribution T(x) and fin heat transfer rate qf of a cylindrical pin fin is presented. The classical Runge-Kutta 4th-order method is used to solve a 2nd-order ODE governing the temperature profile. The shooting method converts the boundary value problem into an initial value problem. Multiple iterations are performed until the solution converges to an adiabatic condition at the fin tip. Numerical results at four different step sizes Delta x are compared to the analytical solution. The R-K 4th-order method produces a fin heat transfer rate qf accurate to 3 decimal digits at the largest step size Delta x = 0.2. The use of four appropriately weighted derivative functions permits the extremely high accuracy of R-K 4th-order method in predicting the y-value jumps over each step Delta x. The major downside is that the shooting method/RK4 method is computationally expensive, which is chiefly due to the requirement of conducting multiple iterations before convergence.
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Cartridge brass undergoes significant changes in mechanical properties as a result of cold work. ... more Cartridge brass undergoes significant changes in mechanical properties as a result of cold work. These changes are effectively reversed in the annealing process returning the metal to its precold-worked state. The major goal of this study is to characterize how the variables of annealing time, temperature, and degree of cold work affect the physical properties of cartridge brass. Tensile tests, hardness tests, and metallographic examination are used in conjunction to assess mechanical and microstructural changes brought on by cold work and annealing. Results indicate that mechanical changes from cold work are more prominent during the first stages of cold work. The time to reach recrystallization is reduced in response to increases in annealing temperature as well as increasing cold deformation. The recrystallization temperature is reduced when time of anneal is increased or degree of cold work is increased. Therefore, recrystallization is driven by strain imposed on the metal during cold working and is a thermally activated process.
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Teaching Documents by John Klein
The validity of the Bernoulli equation is assessed when applied to the steady flow of water in a ... more The validity of the Bernoulli equation is assessed when applied to the steady flow of water in a tapered duct. The effect of the geometry of the duct on the validity of the Bernoulli equation is determined. A probe is used to measure the total head. The probe-measured value is compared to the theoretical prediction by the Bernoulli equation. The two data are shown to be in close agreement. Discrepancies between the probe-measured and theoretical prediction of total head are discussed.
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Papers by John Klein
Teaching Documents by John Klein