A5067947154- Topology Optimization in Engineering
- Vibration and Dynamic Analysis
- Fluid Dynamics and Vibration Analysis
- High-Velocity Impact and Material Behavior
- Contact Mechanics and Variational Inequalities
- Elasticity and Wave Propagation
- Composite Structure Analysis and Optimization
- Structural Analysis and Optimization
- Software-Defined Networks and 5G
- Electromagnetic Launch and Propulsion Technology
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Structural mechanics and materials
- Geotechnical and Geomechanical Engineering
- Caching and Content Delivery
- Material Properties and Failure Mechanisms
- Mechanical stress and fatigue analysis
- Opportunistic and Delay-Tolerant Networks
- Material Properties and Processing
- Wireless Networks and Protocols
- Railway Engineering and Dynamics
- Probabilistic and Robust Engineering Design
- Structural Response to Dynamic Loads
- Engineering and Agricultural Innovations
- Laser and Thermal Forming Techniques
- Elasticity and Material Modeling
Institute for Problems in Mechanics
2005-2020
Physical Sciences (United States)
2017
Meta (Israel)
2015
Russian Academy of Sciences
2008-2010
Good Internet connectivity has become a basic necessity all over the world. Although more than one-third of global population does not have access to [46], commercial network operators claim that today's reached user footprint seems commercially viable serve [22]. Reaching these users requires reducing cost providing enable actors beyond traditional, large-scale build sustainable, scalable infrastructure. Operators need effective ways reduce costs through less expensive equipment and...
This paper describes a problem of axisymmetric shell optimization under fracture mechanics and geometric constraints. The is formulated as the weight (volume material) minimization meridional contour taken design variable. made from quasi-brittle materials through cracks arising are admitted. It supposed that loaded by cyclic forces. A crack propagation process related to stress intensity factor described Paris fatigue law. finding meridian shape (geometric variable), having smallest mass...
Abstract The problem of contact pressure optimization is formulated for the case rigid punch interacted with elastic medium. Coupling penetration and action external loads at outside regions taken into account. shape considered as an unknown design variable. minimized integral functional characterizes discrepancy between actual required distribution. studied under condition that total forces moments applied to acted are given. It shown can be split transformed two successively solved...
We consider an infinite continuous elastic beam that interacts with linearly foundation and is under compression. The problem of the buckling formulated analyzed. Then optimization against investigated. As a design variable (control function) we take parameters cross-section distribution from set periodic functions transform original to corresponding defined at finite interval. All investigations are on whole founded analytical variational approaches optimal solutions studied as function...
We consider an infinite, homogenous linearly elastic beam resting on a system of supports, as idealized model for paper web in the middle cylinder-based dryer section. obtain closed-form analytical expressions eigenfrequencies and eigenmodes. The frequencies increase support rigidity is increased. Each frequency bounded from above by solution with absolutely rigid below limit vanishing rigidity. Thus real system, natural will be lower than predicted commonly used models supports.
Problems of optimal design piece-wise homogeneous layered plates consisting from different materials against penetration absolutely rigid strikers are considered. The number is assumed to be finite and consequently the set admissible variables composed discrete values. Various axisymmetric bodies having cylindrical, conical truncated nose parts considered as strikers. finding plate structures providing maximal ballistic limit velocity minimal mass solved using evolutionary method global...
The optimization problem of shield (protective plate) structure having given thickness and consisting from several layers is considered. It supposed that these are made different materials with properties. order thicknesses determined the condition maximization ballistic limit velocity high-speed striker penetrating into plate. analytical expressions for relations describing derived, optimal solutions set values parameters obtained. theoretical estimation parameter characterizing head part...
The problems of a rigid stamp shape optimization are investigated taking into account the interaction with an elastic medium. external forces applied to medium considered as random values having given statistic characteristics. optimal shapes found for stamps circular in plan. Key words: structural optimization, contact interaction, probabilistic approach.
The paper considers the analysis of a traveling panel, submerged in axially flowing fluid. In order to accurately model dynamics and stability lightweight moving material, interaction between material surrounding air must be taken into account. leads inertial contribution acceleration panel becoming significant. This formulation is novel case complements our previous studies on field. approach described this allows for an efficient semi-analytical solution, where reaction pressure fluid flow...
The translational motion of a thermoelastic beam under transverse vibrations caused by initial perturbations is considered. It assumed that moving at constant speed described model panel supported the edges considered span. problem optimal suppression formulated when applying active influences to panel. To solve optimization problem, modern methods developed in theory control systems with distributed parameters partial differential equations are used.
The problems of optimal design structures from discrete set materials are investigated. Specific peculiarity performed studies consists in the fact that admissible variables take values given values. Elastic rod built up different piecewise homogeneous is considered as an optimized structural element. It supposed under compression aroused a consequence its heating and clamping conditions. Formulated optimization finding thermoelastic material distribution along rod, which minimized reaction...
Questions described in this paper are concerned with the shape optimization of brittle or quasi-brittle (axisymmetric) elastic shells. These questions take into consideration possibilities crack arising and damage accumulation process application cyclic load to shell structure. Initial structural defects, cracks characterized by incomplete information concerning initial sizes, position its orientation. In context we develop statements problems based on guaranteed approach for considered...