- class sfepy.homogenization.convolutions.ConvolutionKernel(name, times, kernel, decay=None, exp_coefs=None, exp_decay=None)[source]¶
The convolution kernel with exponential synchronous decay approximation approximating the original kernel represented by the array , .
where , is the synchronous decay and its exponential approximation, .
- sfepy.homogenization.convolutions.approximate_exponential(x, y)[source]¶
Approximate by .
Initial guess is given by assuming y has already the required exponential form.
Compute mean decay approximation of a non-scalar fading memory coefficient.