نویسندگان
دانشگاه صنعتی اصفهان
چکیده
در این مقاله تئوری روش اجزای مجزای اصلاح شده برای دنبال کردن رفتار سازه تا فروریزش و نرم‌افزاری برای تحلیل سازه‌ها با استفاده از آن ارائه می‌شود. نمونه‌های مختلفی با این روش مدل‌سازی و با نرم‌افزار توسعه داده شده در این تحقیق تحلیل می‌شوند. نتایج نشان می‌دهند که روش اجزای مجزای اصلاح شده در مقایسه با روش اجزای محدود توانایی تحلیل سازه‌ها را با دقت بالا در مدت زمان کوتاهی دارد و همگرایی حل مسئله در آن به‌صورت خودکار حاصل می‌شود. همچنین در این مقاله برای اصلاح ماتریس سختی در ناحیه غیر‌خطی از روش جدیدی استفاده می‌شود که نسبت به روش اصلی اجزای مجزای اصلاح شده، دقت پاسخ را تا 30% افزایش می‌دهد.
کلیدواژه‌ها
عنوان مقاله [English]
Material and Geometrical Nonlinear Analysis of Structures Using Improved Applied Element Method (IAEM)
نویسندگان [English]
- E. Fazeli
- F. Behnamfar
چکیده [English]
In this paper, first the theory of Improved Applied Element Method (IAEM) is proposed and then an appropriate algorithm and software are developed for analyzing structures behavior until collapse by this method. Then, some examples of structural analysis by the above method and a software developed for this study are presented. The results show that IAEM has the ability to solve the discussed problems more accurately in less time than Finite Element Method (FEM). Moreover, the efficiency of the method for solving large displacements problems is enhanced in this research by introducing nonlinear response indicators. For modification of the stiffness matrix in the nonlinear range, a new method is presented that increases the accuracy of calculation up to 30%.
کلیدواژه‌ها [English]
- Non-Linear analysis
- large displacements
- Improved Applied Element Method (IAEM)
- finite element method
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