VariCAD 2008 v3.03

VariCAD 2008 v3.03 - 63.9 MB
VariCAD - CAD system description Introduction Read the rest of this entry »

VariCAD 2008 v3.03 - 63.9 MB
VariCAD - CAD system description Introduction Read the rest of this entry »
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ISBN: 1934404039 | 627 pages | PDF | 3.8 Mb
This text includes the following chapters and appendices: Introduction to MATLAB, Root approximations, Sinusoids and complex numbers, Matrices and determinants, Review of differential equations, Fourier, Taylor, and Maclaurin series, Finite differences and interpolation, Linear and parabolic regression, Solution of differential equations by numerical methods, Integration by numerical methods, Difference equations, Partial fraction expansion, The Gamma and Beta Functions and distributions, Orthogonal functions and matrix factorizations, Bessel, Legendre, and Chebyshev polynomials, Optimization methods, Difference Equations in Discrete-Time systems, Introduction to Simulink, Ill-Conditioned Matrices. Each chapter contains numerous practical applications supplemented with detailed instructions for using MATLAB and/or Excel to obtain quick solutions. Read the rest of this entry »

894 pages | 1999 | PDF | 25 Mb ICSAS ‘99 - The Fourth International Conference on Steel and Aluminium Structures was a sequel to ICSAS ‘87 held in Cardiff, UK, to ICSAS ‘91 held in Singapore and to ICSAS ‘95 held in Istanbul, Turkey. The objective of the conference was to provide a forum for the discussion of recent findings and developments in the design and construction of various types of steel and aluminium structures. Read the rest of this entry »
750 pages | 1998 | PDF | 35 Mb Thin-plated structures are used extensively in building construction, automobile, aircraft, shipbuilding and other industries because of a number of favourable factors such as high strength-weight ratio, development of new materials and processes and the availability of efficient analytical methods. This class of structure is made by joining thin plates together at their edges and they rely for their rigidity and strength upon the tremendous stiffness and load-carrying capacity of the flat plates from which they are made. Read the rest of this entry »
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The German engineer Otto Mohr (1835-1918) developed a useful pictorial or graphical interpretation of the equations for finding the principal stresses and the maximum shearing stress at a point in a stressed member. This method, commonly called Mohr’s circle, involves the construction of a circle in such a manner that the coordinates of each point on the circle represent the normal and shearing stresses on one plane through the stressed point, and the angular position of the radius to the point gives the orientation of the plane. Read the rest of this entry »
Timing belts solve the slip problems of flat, O ring, and V belts by using
a flexible tooth, molded to a belt that has tension members built in. The
teeth are flexible allowing the load to be spread out over all the teeth in
contact with the pulley. Timing belts are part of a larger category of
power transmission devices called synchronous drives. These belt or
cable-based drives have the distinct advantage of not slipping, hence the
name synchronous. Synchronous or positive drive also means these belts
can even be used in wet conditions, provided the pulleys are stainless
steel or plastic to resist corrosion. Read the rest of this entry »
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Flywheels may be classified as balance wheels or as flywheel pulleys. The object of all flywheels is to equalize the energy exerted and the work done and thereby prevent excessive or sudden changes of speed. The permissible speed variation is an important factor in all flywheel designs. The allowable speed change varies considerably for different classes of machinery; for instance, it is about 1 or 2 per cent in steam engines, while in punching and shearing machinery a speed variation of 20 per cent may be allowed.
The function of a balance wheel is to absorb and equalize energy in case the resistance to motion, or driving power, varies throughout the cycle. Therefore, the rim section is generally quite heavy and is designed with reference to the energy that must be stored in it to prevent excessive speed variations and, with reference to the strength necessary to withstand safely the stresses resulting from the required speed. The rims of most balance wheels are either square or nearly square in section, but flywheel pulleys are commonly made wide to accommodate a belt and relatively thin in a radial direction, although this is not an invariable rule. Read the rest of this entry »