The economics of garbage collection [PDF]
This paper argues that economic theory can improve our understanding of memory management. We introduce the allocation curve, as an analogue of the demand curve from microeconomics.
Brown, G.+3 more
core +1 more source
Nonlinear elastic moduli of composite materials with nonlinear spherical inclusions dispersed in a nonlinear matrix [PDF]
A theory is developed for evaluation of nonlinear elastic moduli of composite materials with nonlinear inclusions dispersed in another nonlinear material (matrix). We elaborate a method aimed for determination of elastic parameters of a composite: its linear elastic moduli (second-order elastic constants) and nonlinear elastic moduli, which are known ...
arxiv +1 more source
Four simplified gradient elasticity models for the simulation of dispersive wave propagation [PDF]
Gradient elasticity theories can be used to simulate dispersive wave propagation as it occurs in heterogeneous materials. Compared to the second-order partial differential equations of classical elasticity, in its most general format gradient elasticity ...
A.V. Metrikine+9 more
core +1 more source
Numerical Modelling of Contact Interactionof Profiled Metal Gaskets in Aircraft Flange Connections
The relevance of the research is justified by the development of flange connections of hermetic structures of aeronautical equipment under conditions of weight and material intensity limitation with simultaneous increase of their technical and energetic ...
Lyubov’ I. Mironova+2 more
doaj +1 more source
A symmetric formula of transformed elasticity tensor in PML domain for elastic wave problem [PDF]
The perfectly matched layer is very important for the elastic wave problem in the frequency domain. Generally, the formulas of the elasticity tensor in the perfectly matched layers are derived from the transformed momentum equation. In this note, we proved that the transformed elasticity tensor derived in this way lost its symmetry.
arxiv
Granular Elasticity without the Coulomb Condition [PDF]
An self-contained elastic theory is derived which accounts both for mechanical yield and shear-induced volume dilatancy. Its two essential ingredients are thermodynamic instability and the dependence of the elastic moduli on compression.
arxiv +1 more source
On microcontinuum field theories: the Eshelby stress tensor and incompatibility conditions [PDF]
We investigate linear theories of incompatible micromorphic elasticity, incompatible microstretch elasticity, incompatible micropolar elasticity and the incompatible dilatation theory of elasticity (elasticity with voids). The incompatibility conditions and Bianchi identities are derived and discussed. The Eshelby stress tensor (static energy momentum)
arxiv +1 more source
Optical Design and Active Optics Methods in Astronomy
Optical designs for astronomy involve implementation of active optics and adaptive optics from X-ray to the infrared. Developments and results of active optics methods for telescopes, spectrographs and coronagraph planet finders are presented.
Lemaitre, Gerard R.
core +3 more sources
Molecular Theory of Rubber Elasticity [PDF]
Abstract Theories of rubber elasticity are reviewed and compared. Principal differences centre on the connection between the locations of network junctions and the macroscopic strain. Constraints on junctions imposed by surrounding chains have been postulated to be responsible for departures of experiments from the theory for idealized ‘phantom ...
openaire +3 more sources
Rayleigh surface waves of extremal elastic materials [PDF]
Extremal elastic materials here refer to a specific class of elastic materials whose elastic matrices exhibit one or more zero eigenvalues, resulting in soft deformation modes that, in principle, cost no energy. They can be approximated through artificially designed solid microstructures.
arxiv +1 more source