By James F. Doyle
This ebook tackles the query, How can an engineer with a robust finite point application yet modest history wisdom of mechanics remedy unexpected difficulties? Engineering educators will locate this publication to be a brand new and fascinating method of supporting scholars interact with advanced principles. practising engineers who use finite aspect how to resolve difficulties in solids and buildings will expand the variety of difficulties they could resolve in addition to speed up their studying on new difficulties. This book's precise strengths contain: • A completely smooth method of studying and realizing mechanics difficulties • complete assurance of a giant choice of difficulties starting from static to dynamic and from linear to nonlinear, utilized to quite a few buildings and elements • Accompanying software program that's subtle and flexible and is obtainable at no cost from the book's site • skill to counterpoint any commonplace finite point textbook
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Extra info for Guided Explorations of the Mechanics of Solids and Structures (Cambridge Aerospace Series)
Example text
I. Deformed Shapes The deformed shape is the most basic type of information provided by a FE analysis. The overall behavior of the model is seen at a glance, and it provides a fast and reliable means of judging whether the loads were applied correctly and the effect of the boundary conditions. A vector version of the plot superposes the vector displacement to give a sense of deformed motion. A sequence of deformed shapes can be made into a movie. Vibration and buckled mode shapes can be animated by use of a time sinusoidal function.
0]. Remesh and redo the static analysis. Record the transverse displacement at center end and axial stress at top midlength. ANALYZING THE DATA 1. Make a table with all the data converted to stiffnesses according to K22 = Py . vL 2. Make separate plots of stiffness against width, height, and length. Comment on the sensitivity of the stiffness to each parameter. 3. A simple model can be constructed by first assuming that the bar is in uniaxial stress. How well do the observed stresses and strains agree with these assumptions?
13. A variant of (a) has an elastic support and a variant of (c) is a triangulated space truss. What they have in common is that they are skeletal structures modeled with 3D frame elements. Arbitrary boundary conditions can be imposed at the base. Point and distributed loads can be applied. VII. Solid The solid geometry group has 3D objects modeled with Hex20 brick elements. 14. What these have in common is that they are fully 3D continua and can be modeled with nonlinear elastic, rubberlike elastic, and elastic-plastic constitutive relations.