"The details are deliberately quite primitive," says project architect John O'Mara, describing how the material junctions of brick, concrete and oak are simply expressed as "essential acts of assembly", in line with the building's archaic, primal form.
A new three-dimensional variable-order singular boundary element has been constructed for stress analysis of three-dimensional interface cracks and internal material junctions.
The stress singularities near the crack corners of multi-dissimilar isotropic elastic material junctions are studied analytically in terms of the methods developed in Hamiltonian system.
Crack driving forces are presented for (i) debonding between alternating material sections in a thin film (i.e. channel and tunnel cracking at material junctions), and (ii) channel cracking in a thin uniform coating above a layer comprised of alternating sections of different materials.
The TSA has revealed significant new information about the local stress fields in the vicinity of the tri-material junction (peel stopper tip) as well as the fracture process zone.
The problem of stress singularities due to multi-material junctions is described in this paper.
This paper presents a new method for the stress singularity analysis near the crack corners of a multi-material junctions.
We also provide the reader with a review of the geometrical configurations and mechanical conditions that can relieve or remove the singularities, including: re-entrant corners; power-law hardening constitutive laws; fractal cracks; multi-material junctions and wedges; nonhomogeneous materials.
Vélez, S. et al. Gate-tunable diode and photovoltaic effect in an organic 2D layered material p n junction.
These characteristics of the solar cell depend on solar cell design, fabrication, material properties, junction depth and optical coatings.
Hence, the microscopic model of the same material (PN junction) was altered on account of its biasing conditions and students had to make sense of the altered microscopic model and predict its macroscopic experimental outcome.
