نتایج جستجو برای: geometrical imperfections

تعداد نتایج: 33157  

Journal: :Applied sciences 2022

Numerical homogenization is an excellent tool for the quick simplification of complex structures with a model that much simpler and, at same time, accurately reflects mechanical behavior original model. Corrugated cardboard modeling, all geometrical nuances preserved, complicated and time-consuming process. The transfer full 3D corrugated board composed two flat layers middle layer to one only,...

Journal: :CoRR 2015
Sreram Balasubramaniyan Seshadhri Srinivasan B. Subathra Srini Ramaswamy

Networked automation systems (NAS) are characterized by confluence of control, computation, communication and Information (CI) technologies. Design decisions of one domain are affected by the constraints posed by others. Reliable NAS design should address the requirements of the system, and simultaneously meet the constraints posed by other domains and this is called co-design in literature. Co...

Journal: :Engineering reports 2023

With the advent of additive manufacturing, lattice structures have been increasing interest for engineering applications involving light-weighting and energy absorption. Several studies investigated mechanical properties various lattices made up mostly unreinforced polymers lack numerical analysis reinforced structures. In this paper, response short fiber under compression is through experiment...

Journal: :Aerospace 2022

The flow at low Mach numbers and high angles of attack over axisymmetric configurations is not symmetric. mechanism that triggers the asymmetry a combination global (temporal) instability convective (spatial) instability. This latter caused by roughness other geometrical imperfections, which lead to roll angle dependent forces. these conditions has complex vortex sheet structure, with two or th...

Journal: :Materials & Design 2021

Specimen design and manufacturing quality are decisive factors in the experimental determination of material properties, because they can only be reliably determined if all undesired influences have been minimized or precisely known. The manufacture specimens from highly viscous, two-component fiber-reinforced structural adhesives presents a challenge this point view. Therefore, optimization pr...

2002
Habib Ammari Darko Volkov

We consider electromagnetic media that consist of a homogeneous (constant coefficient) electromagnetic material with a finite number of small dielectric imperfections. For such media, we provide a rigorous derivation of asymptotic formulas for perturbations in the eigenfrequencies of the full Maxwell equations caused by the presence of the dielectric imperfections.

2012
Geert Lombaert Mattias Schevenels Boyan S. Lazarov Ole Sigmund

Topology optimization is a method to find the best distribution of material in a given design domain. The use of topology optimization for structural design often leads to slender structures which are sensitive to geometric imperfections such as the misplacement or misalignment of material. A robust approach to topology optimization is therefore presented which takes into account these geometri...

Journal: :BJOG: An International Journal of Obstetrics & Gynaecology 2019

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