کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498271 862983 2014 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Discontinuities without discontinuity: The Weakly-enforced Slip Method
ترجمه فارسی عنوان
عدم انسجام: بدون لغزش
کلمات کلیدی
جابجایی ولتررا، روش عنصر محدود اعمال ضعیف، کشش خطی، تکتونوفیزیک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی

Tectonic faults are commonly modelled as Volterra or Somigliana dislocations in an elastic medium. Various solution methods exist for this problem. However, the methods used in practice are often limiting, motivated by reasons of computational efficiency rather than geophysical accuracy. A typical geophysical application involves inverse problems for which many different fault configurations need to be examined, each adding to the computational load. In practice, this precludes conventional finite-element methods, which suffer a large computational overhead on account of geometric changes. This paper presents a new non-conforming finite-element method based on weak imposition of the displacement discontinuity. The weak imposition of the discontinuity enables the application of approximation spaces that are independent of the dislocation geometry, thus enabling optimal reuse of computational components. Such reuse of computational components renders finite-element modeling a viable option for inverse problems in geophysical applications. A detailed analysis of the approximation properties of the new formulation is provided. The analysis is supported by numerical experiments in 2D and 3D.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 271, 1 April 2014, Pages 144–166
نویسندگان
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