# Download A Brief on Tensor Analysis by James G. Simmonds PDF

By James G. Simmonds

During this textual content which steadily develops the instruments for formulating and manipulating the sphere equations of Continuum Mechanics, the math of tensor research is brought in 4, well-separated phases, and the actual interpretation and alertness of vectors and tensors are under pressure all through. This re-creation includes extra workouts. furthermore, the writer has appended a bit on Differential Geometry.

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Extra resources for A Brief on Tensor Analysis

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We can easily find out by taking the transform of a "perfect" square wave, truncating the upper harmonic components, and reconstructing the time domain function. We will need an FFT program to perform this exercise (and the remaining illustrations in this chapter); so, we will borrow the following program (taken intact from Appendix 1 0 of Understanding the FFT). We have added routines to generate our initial square wave function, of course, and to truncate the spectrum of the frequency domain function (as well as a couple of other methods for filtering the spectrum).

3) show the same thing. W hen we multiply sinusoids, two new side band sinusoids are produced (note that the original sinusoids disappear and the two new sidebands are ofdifferentfrequency than either of the sinusoids multiplied together). This unique aspect of sinusoids has profound significance. , of sinusoid multiplication) is the underlying mechanism of convolution (which plays such a prominent role in understanding and applying Fourier analysis). It will be worth digging a little deeper here.

1 64 728 1 . 1 27892 1 . 077871 1 . 02392 1 0 . 974237 0 . 935197 0 . 91 0869 If you run this program for 100 and 1 000 frequency components, you will get the results shown above. Except for "scaling" of the time interval, there is little difference between these two runs. 9% of the transition amplitude (the transition in the above example is from - 1 to + 1). Only the time scale will change. This is known as the Gibbs phenomenon. The overshoot will apparently remain at 8 . 9%-even when the number of components increases without limit!