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تحلیل مهندسی با عناصر مرزی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • non-linear boundary element formulation applied to contact analysis using tangent operator

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 513
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this work presents a non-linear boundary element formulation applied to analysis of contact problems. the boundary element method (bem) is known as a robust and accurate numerical technique to handle this type of problem, because the contact among the solids occurs along their boundaries. the proposed non-linear formulation is based on the use of singular or hyper-singular integral equations by bem, for multi-region contact. when the contact occurs between crack surfaces, the formulation adopted is the dual version of bem, in which singular and hyper-singular integral equations are defined along the opposite sides of the contact boundaries. the structural non-linear behaviour on the contact is considered using coulomb's friction law. the non-linear formulation is based on the tangent operator in which one uses the derivate of the set of algebraic equations to construct the corrections for the non-linear process. this implicit formulation has shown accurate as the classical approach, however, it is faster to compute the solution. examples of simple and multi-region contact problems are shown to illustrate the applicability of the proposed scheme.

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