نتایج جستجو برای: viscoelastic annular plate

تعداد نتایج: 96370  

2009
Mohamed I. A. Othman

In this paper we introduced the normal mode analysis for two–dimensional problems of the generalized linear thermo–viscoelasticity with one relaxation time. The exact expressions for the temperature distribution, the displacement components and the stress are obtained. The resulting formulation is applied to three different concrete problems. The first deals with a thick plate subjected to a ti...

Journal: :Biophysical journal 1998
A R Bausch F Ziemann A A Boulbitch K Jacobson E Sackmann

A magnetic bead microrheometer has been designed which allows the generation of forces up to 10(4) pN on 4.5 micron paramagnetic beads. It is applied to measure local viscoelastic properties of the surface of adhering fibroblasts. Creep response and relaxation curves evoked by tangential force pulses of 500-2500 pN (and approximately 1 s duration) on the magnetic beads fixed to the integrin rec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و فرهنگ - دانشکده مهندسی عمران 1393

با توجه به استفاده روزافزون قاب های خمشی مرکب و تاثیر جزییات اتصال تیر و ستون در رفتار اتصالات ستون بتنی و تیر فولادی (rcs)، در این تحقیق به بررسی عملکرد تیر متعامد در این نوع اتصالات پرداخته شده است که بدین منظور از 25 مدل با جزییات مختلف استفاده شده است. در این مطالعه علاوه بر تاثیر تیر متعامد، سایر جزییات موجود در اتصال نیز مورد بررسی قرار گرفته است. در این راستا به بررسی برخی دیگر از جزییات...

Journal: :Shock and Vibration 2023

The large-distance penetration capability of an annular-shaped charge under multipoint synchronous initiation was experimentally investigated. For different annular structures and settings, incident angle, collision type detonation waves, overpressure on the shaped charge’s liner at adjacent points were analyzed using wave propagation theory. Furthermore, a standoff distance 1–15 m from 20 mm t...

Journal: :Communications on Pure and Applied Analysis 2023

In this paper, we consider a viscoelastic plate equation of Moore-Gibson-Thompson with heat conduction Cattaneo type. We investigate the system in bounded and unbounded domains, seeking exponential stability domains polynomial decay rates for Cauchy problem. It turns out that our is exponentially stable domain, while has regularity loss Our results are proved sub-critical case $ K>0.

Journal: :Journal of Differential Equations 2023

This paper concerns a free-boundary fluid-structure interaction problem for plaque growth proposed by Yang et al. [J. Math. Biol., 72(4):973--996, 2016] with additional viscoelastic effects, which was also investigated the authors [arXiv preprint: 2110.00042, 2021]. Compared to it, is posed in cylindrical domain ninety-degree contact angles, brings difficulties when we deal linearization of sys...

Journal: :Optics letters 2008
Huiqin Tang Taofen Wang Kaicheng Zhu

We introduce a multilevel spiral phase plate (SPP) limited by a pseudoring polygonal aperture (PRPA). Such an SPP has the advantages of easier fabrication and greater suppression of the sidelobes of the diffraction field over that generated with a polygonal aperture (PA). The Fraunhofer diffraction fields generated by an SPP with a PRPA or with a PA have the same topological charge features and...

Journal: :E3S web of conferences 2021

The article deals with forced vibrations of a high-rise axisymmetric structure, represented as viscoelastic beam an annular section variable slope the generatrices and thickness. research was conducted to analyze behavior structure for various kinematic effects. task is determine displacements points at different time under methods were developed computer program built; structures actions, cons...

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