It is usual to solve a system of linear equations such as in rheological problems. Some of examples are calculations of molecular weight distribution and relaxation time spectrum from experimental data. In these example, is the molecular weight di...
It is usual to solve a system of linear equations such as in rheological problems. Some of examples are calculations of molecular weight distribution and relaxation time spectrum from experimental data. In these example, is the molecular weight distribution or relaxation time spectrum and and are related to the given experimental data and given function in the equation. Many algorithms have been developed to satisfy the condition that all must be obtained as a positive number. These algorithms find good solutions when is a diagonal dominant matrix. However, when is a non-diagonal dominant matrix, it is difficult to find good solution. There are two examples that have such problem. One is calculation of molecular weight distribution and the other is calculation of relaxation time spectrum from relaxation modulus.
It showed that the improved algorithm that was developed by Kim[12] and the author of this paper can calculate the molecular weight distribution. In this study we consider the influence of parameters on the algorithm. Based on these considerations, we compute the molecular weight distribution. Also, we apply this algorithm to the problem of calculating the relaxation time spectrum from the relaxation modulus with same problem as molecular weight distribution.