Analysis of fringe patterns with partial--field and/or closed fringes is still a challenging problem that requires the development of robust methods. This paper presents a method for fringe pattern analysis with those characteristics. The method is initially introduced as a phase refinement process for computed coarse phases, as those obtained from partial--field patterns with a full-field meth...

in this study, nonlocal nonlinear instability and the vibration of a double carbon nanotube (cnt) system have been investigated. the visco-pasternak model is used to simulate the elastic medium between nanotubes, on which the effect of the spring, shear and damping of the elastic medium is considered. both of the cnts convey a viscose fluid and a uniform longitudinal magnetic field is applied t...

A radial well has a unique wellbore configuration. Fracture propagation in deflagration fracturing is studied rarely. The mechanism of interaction between fractures, natural and micro-fractures still unknown. Based on continuum mechanics, damage variational principles, numerical model fracture established with the Hamilton principle phase-field theory. effects horizontal principal stress differ...

Abstract The efficient simulation of complex fracture processes is still a challenging task. In this contribution, an enriched phase-field method for the 2D presented. It has potential to drastically reduce computational cost compared classical (PFM). based on combination approach with ansatz transformation and enrichment technique displacement field as it used in extended finite element (XFEM)...