نتایج جستجو برای: nonlinear dynamic buckling response

تعداد نتایج: 1540916  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی مکانیک و هوافضا 1386

در این پایان نامه با استفاده روش نوار محدود اسپلاین تحلیل رفتار کمانش و پس از کمانش صفحات ایزوتروپ و ساخته شده از مواد مرکب صورت گرفته است و از تیوری صفحه مرتبه سوم ردی برای مدل سازی رفتار صفحه استفاده شده که باعث می شود قابلیت تحلیل صفحات ضخیم نیز به تیوری نوار محدود اسپلاین اضافه شود. در این راستا تیوری های مختلفی که برای تحلیل صفحات وجود دارد بیان شده و تفاوت های آن ها از جهت توابع تغییر مکا...

2002
P. E. S. N.

The problem of large deflections of thin flat plates is mderived here using a novel integral equation approach. These plate deformations arc governed by the von Karman plate theory. The numerical solution that is implemented combines both boundary and interior elements in the discretization of the continuum. The formulation also illustrates the adaptability of the boundary element technique to ...

F. Rahimzadeh Rofooei and H. Saadatnia,

The base isolation systems are among the passive control devices that have been used over the last three decades to limit the seismic-induced response of structures. In this regard, the Uniform Building Code provisions (UBC) has incorporated a special section for the seismic design of base isolated structures since its 1991 edition. Due to the importance of the behavior of these structures unde...

Journal: :journal of rehabilitation in civil engineering 2013
m. mahmoudi a. mirzaei s. vosough

a study on the evaluating equivalent damping and response modification factors of frames equipped by pall friction dampers is presented. to do so, buildings with various stories were considered. nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for pall friction dampers. ground motions with various frequency characteristics scaled with iranian ...

F. Rahimzadeh Rofooei and H. Saadatnia,

The base isolation systems are among the passive control devices that have been used over the last three decades to limit the seismic-induced response of structures. In this regard, the Uniform Building Code provisions (UBC) has incorporated a special section for the seismic design of base isolated structures since its 1991 edition. Due to the importance of the behavior of these structures unde...

2014
K Yamamoto T Fujita A Badel K Maenaka

In this study, the improvement of energy harvesting from wideband vibration with random change by using a combination of linear and nonlinear spring system is investigated. The system consists of curved beam spring for non-linear buckling, which supports the linear mass-spring resonator. Applying shock acceleration generates a snap through action to the buckling spring. From the FEM analysis, w...

In this paper, transverse and longitudinal vibration of nonlinear plate under exciting of orbiting mass is considered based on first-order shear deformation theory. The nonlinear governing equation of motion are discretized by the finite element method in combination with Newmark’s time integration scheme under von Karman strain-displacement assumptions. For validation of method and formulation...

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