حل عددی دستگاه معادلات انتگرال فردهلم- همرشتاین با استفاده از توابع کلاهی توسعه یافته

نویسندگان
دانشگاه آزاد اسلامی، گروه ریاضی، کرج، رجایی شهر
چکیده
دستگاهی از معادلات انتگرال می­تواند مسائل مختلفی در علوم و مهندسی را توصیف ­کند. روش‌های عددی مختلفی برای تقریب جواب­های دستگاه معادلات انتگرال خطی و غیرخطی وجود دارد. در این مقاله، یک روش عددی بر اساس توابع کلاهی توسعه یافته برای تقریب جواب­های دستگاه معادلات انتگرال فردهلم- همرشتاین ارائه‌ شده است. روش ارائه‌ شده دستگاه معادلات انتگرال را به دستگاهی از معادلات جبری غیرخطی کاهش می­دهد که به‌‌راحتی با روش‌های معمول عددی حل می­شود. برای اثبات درستی و کارایی روش پیشنهادی، چند مثال عددی همراه با مقایسه با سایر روش‌های مشابه ارائه‌ شده است که کارایی روش جدید و برتری آن نسبت به‌سایر روش‌های موجود را نشان می­دهد.
کلیدواژه‌ها

عنوان مقاله English

Numerical Solution of System of Fredholm-Hammerstein Integral Equations using Modification of Hat Functions

نویسندگان English

Elnaz Babaei
Elham Hashemizadeh
چکیده English

Introduction

A system of integral equations can describe different kind of problems in sciences and engineering. There are many different methods for numerical solution of linear and nonlinear system of integral equations.

Material and methods

This paper proposed a numerical method based on modification of Hat functions for solving system of Fredholm-Hammerstein integral equations. The proposed method reduced a system of integral equation to a system of algebraic equations that can be solved easily by known methods.

Results and discussion

For showing the accuracy and capability of the proposed method, some numerical examples are proposed that their results compared by results of other methods, and shows the capability and the superiority of this method to other existed methods.

Also this paper derived the computational cost and the error analysis of the proposed method.

Conclusion

The following conclusions were drawn from this research.


This paper proposed a numerical method based on modification of Hat functions for solving system of Fredholm-Hammerstein integral equations.
The proposed method reduced a system of integral equation to a system of algebraic equations that can be solved easily by known methods.
The presented error analysis and solved problems show capability and the superiority of this method to other existed methods../files/site1/files/52/1.pdf

کلیدواژه‌ها English

Fredholm-Hammerstein integral equations
Modification of hat functions
Operational matrix
System of integral equations
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