Variable-order variable-step algorithms for second-order systems. Part 2: The codes

1988 ◽  
Vol 26 (1) ◽  
pp. 55-80 ◽  
Author(s):  
I. Gladwell ◽  
R. M. Thomas
Author(s):  
Lei Zhang ◽  
Chaofeng Zhang ◽  
Mengya Liu

According to the relationship between truncation error and step size of two implicit second-order-derivative multistep formulas based on Hermite interpolation polynomial, a variable-order and variable-step-size numerical method for solving differential equations is designed. The stability properties of the formulas are discussed and the stability regions are analyzed. The deduced methods are applied to a simulation problem. The results show that the numerical method can satisfy calculation accuracy, reduce the number of calculation steps and accelerate calculation speed.


2020 ◽  
Vol 53 (2) ◽  
pp. 4611-4616
Author(s):  
Ramón I. Verdés ◽  
Luis T. Aguilar ◽  
Yury Orlov

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